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The young stellar population in NGC 247 Main properties and hierarchical clusteringApr 22 2019The aim of this work is to investigate the characteristics of the young stellar population in the spiral galaxy NGC 247. In particular, we focused our attention in its hierarchical clustering distributions and the properties of the smallest groups. We ... More
Theoretical foundations of the reduced relativistic gas in the cosmological perturbed contextApr 22 2019The Reduced Relativistic Gas (RRG) is a simplified version of the ideal relativistic gas, which assumes that all particles have the same momentum magnitude. Although this is a very idealized situation, the resulting model preserves the phenomenology of ... More
The Local Volume HI Survey (LVHIS)Apr 21 2019The `Local Volume HI Survey' (LVHIS) comprises deep HI spectral line and 20-cm radio continuum observations of 82 nearby, gas-rich galaxies, supplemented by multi-wavelength images. Our sample consists of all galaxies with Local Group velocities v_LG ... More
The Nucleosynthesis and Reaction Rates of Fluorine 19 ($^{19}F$) in the SunApr 21 2019We investigate the abundance of $^{19}F$ in the Sun through the nucleosynthesis scenario. In addition, we calculate the rate equations and reaction rates of the nucleosynthesis of $^{19}F$ at different temperature scale. Other important functions of this ... More
Metal-poor stars observed with the automated planet finder telescope. I. Discovery of five carbon-enhanced metal-poor stars from LAMOSTApr 21 2019We report on the discovery of five carbon-enhanced metal-poor (CEMP) stars in the metallicity range of $-3.3<$ [Fe/H] $<-2.4$. These stars were selected from the LAMOST DR3 low-resolution (R$ \sim$ 2,000) spectroscopic database as metal-poor candidates ... More
First astrophysical detection of the helium hydride ion (HeH$^+$)Apr 21 2019During the dawn of chemistry when the temperature of the young Universe had fallen below $\sim$4000 K, the ions of the light elements produced in Big Bang nucleosynthesis recombined in reverse order of their ionization potential. With its higher ionization ... More
Merging galaxies in isolated environments I. Multiband photometry, classification, stellar masses, and star formation ratesApr 19 2019Extragalactic surveys provide significant statistical data for the study of crucial galaxy parameters used to constrain galaxy evolution, e.g. stellar mass (M$_*$) and star formation rate (SFR), under different environmental conditions. These quantities ... More
Parameter Estimation for Scarce Stellar PopulationsApr 19 2019We present a Bayesian method to determine simultaneously the age, metallicity, distance modulus, and interstellar reddening by dust of any resolved stellar population, by comparing the observed and synthetic color magnitude diagrams on a star by star ... More
Constraints on a Putative Planet Sculpting the V4046 Sagittarii Circumbinary DiskApr 18 2019We analyze the highest-resolution millimeter continuum and near-infrared (NIR) scattered-light images presented to date of the circumbinary disk orbiting V4046 Sgr, a ~20 Myr old actively accreting, close binary T Tauri star system located a mere 72.4 ... More
Atomic Modeling of Photoionization Fronts in Nitrogen GasApr 18 2019Photoionization fronts play a dominant role in many astrophysical environments, but remain difficult to achieve in a laboratory experiment. Recent papers have suggested that experiments using a nitrogen medium held at ten atmospheres of pressure that ... More
The Supersonic Project: Shining Light on SIGOs - a New Formation Channel for Globular ClustersApr 18 2019Supersonically induced gas objects (SIGOs) with little to no dark matter component are predicted to exist in patches of the Universe with non-negligible relative velocity between baryons and the dark matter at the time of recombination. Using {\sc arepo} ... More
Radio spectra and sizes of ALMA-identified submillimetre galaxies: evidence of age-related spectral curvature and cosmic ray diffusion?Apr 18 2019We analyse the multi-frequency radio spectral properties of $41$ 6GHz-detected ALMA-identified, submillimetre galaxies (SMGs), observed at 610MHz, 1.4GHz, 6GHz with GMRT and the VLA. Combining high-resolution ($\sim0.5''$) 6GHz radio and ALMA $870\,\mu$m ... More
Anatomy of a Cooling Flow: The Feedback Response to Pure Cooling in the Core of the Phoenix ClusterApr 18 2019We present new, deep observations of the Phoenix cluster from the Chandra X-ray Observatory, the Hubble Space Telescope, and the Karl Jansky Very Large Array. These data provide an order of magnitude improvement in depth and/or angular resolution at X-ray, ... More
Eigenfunctions of Galactic Phase Space Spirals from Dynamic Mode DecompositionApr 18 2019We introduce the method of Dynamic Mode Decomposition (DMD) to the field of galactic dynamics. In DMD the dynamics of non-linear systems is studied by determining the dominant modes of an approximate linear model for the evolution. Typically, the DMD ... More
Confirming interstellar C$_{60}^+$ using the Hubble Space TelescopeApr 18 2019Recent advances in laboratory spectroscopy lead to the claim of ionized Buckminsterfullerene (C60+) as the carrier of two diffuse interstellar bands (DIBs) in the near-infrared. However, irrefutable identification of interstellar C60+ requires a match ... More
A merger shock in Abell 1367Apr 18 2019Multi-wavelength observations show that Abell 1367 (A1367) is a dynamically young cluster, with at least two subclusters merging along the SE-NW direction. With the wide-field XMM-Newton mosaic of A1367, we discover a previously unknown merger shock at ... More
The Fornax Deep Survey (FDS) with VST. VI. Optical properties of the dwarf galaxies in the Fornax clusterApr 18 2019The Fornax Deep Survey Dwarf galaxy Catalog (FDSDC) includes 564 dwarf galaxies in the Fornax cluster and the in-falling Fornax A subgroup. We use the FDSDC galaxies for statistical analysis of the structural and stellar population differences in the ... More
SkyMapper SEDs of nearby galaxies: quenching and bursting probed by a change index for star formationApr 18 2019The wish list of astronomers includes a tool that reveals quenching of star formation in galaxies directly as it proceeds. Here, we present a proof-of-concept for a new quenching-and-bursting diagnostic, a "change index" for star formation, that requires ... More
Uncovering Red and Dusty Ultraluminous X-ray Sources with SpitzerApr 18 2019We present a mid-infrared (IR) sample study of nearby ultraluminous X-ray sources (ULXs) using multi-epoch observations with the Infrared Array Camera (IRAC) on the Spitzer Space Telescope. Spitzer/IRAC observations taken after 2014 were obtained as part ... More
Kinematics of the OVI Circumgalactic Medium: Halo Mass Dependence and Outflow SignaturesApr 18 2019We probe the high-ionization circumgalactic medium by examining absorber kinematics, absorber-galaxy kinematics, and average absorption profiles of 31 OVI absorbers from the "Multiphase Galaxy Halos" Survey as a function of halo mass, redshift, inclination, ... More
Astro2020 Science White Paper: Are Supernovae the Dust Producer in the Early Universe?Apr 17 2019Whether supernovae are a significant source of dust has been a long-standing debate. The large quantities of dust observed in high-redshift galaxies raise a fundamental question as to the origin of dust in the Universe since stars cannot have evolved ... More
The Tilt of the Local Velocity Ellipsoid as Seen by GaiaApr 17 2019The Gaia Radial Velocity Spectrometer (RVS) provides a sample of 7,224,631 stars with full six-dimensional phase space information. Bayesian distances of these stars are available from the catalogue of Sch\"onrich et al. (2019). We exploit this to map ... More
Action-based models for dwarf spheroidal galaxies and globular clustersApr 17 2019A new family of self-consistent DF-based models of stellar systems is explored. The stellar component of the models is described by a distribution function (DF) depending on the action integrals, previously used to model the Fornax dwarf spheroidal galaxy ... More
Astro2020 Science White Paper: Measuring Protostar Masses: The Key to Protostellar EvolutionApr 17 2019Knowledge of protostellar evolution has been revolutionized with the advent of surveys at near-infrared to submillimeter wavelengths. This has enabled the bolometric luminosities and bolometric temperatures (traditional protostellar evolution diagnostics) ... More
Astro2020 Science White Paper: The Formation and Evolution of Multiple Star SystemsApr 17 2019Significant advances have been made over the past decade in the characterization of multiple protostar systems, enabled by the Karl G. Jansky Very Large Array (VLA), high-resolution infrared observations with the Hubble Space Telescope, and ground-based ... More
A New Radio Molecular Line Survey of Planetary Nebulae: HNC/HCN as a Diagnostic of Ultraviolet IrradiationApr 17 2019Certain planetary nebulae contain shells, filaments, or globules of cold gas and dust whose heating and chemistry are likely driven by UV and X-ray emission from their central stars and from wind-collision-generated shocks. We present the results of a ... More
The MASSIVE Survey XIII -- Spatially Resolved Stellar Kinematics in the Central 1 kpc of 20 Massive Elliptical Galaxies with the GMOS-North Integral-Field SpectrographApr 17 2019We use observations from the GEMINI-N/GMOS integral-field spectrograph (IFS) to obtain spatially resolved stellar kinematics of the central $\sim 1$ kpc of 20 early-type galaxies (ETGs) with stellar masses greater than $10^{11.7} M_\odot$ in the MASSIVE ... More
Constraining the Delay Time Distribution of Binary Neutron Stars with the Host Galaxies of Gravitational Wave EventsApr 17 2019The delay time distribution of (DTD) of binary neutron stars (BNS) remains poorly constrained, mainly by the small known population of Galactic binaries, the properties of short gamma-ray burst host galaxies, and inferences from $r$-process enrichment. ... More
The Herschel Dwarf Galaxy Survey: II. Physical conditions, origin of [CII] emission, and porosity of the multiphase low-metallicity ISMApr 17 2019The sensitive infrared telescopes, Spitzer and Herschel, have been used to target low-metallicity star-forming galaxies, allowing us to investigate the properties of their interstellar medium (ISM) in unprecedented detail. Interpretation of the observations ... More
Origin of the Golden Mass of Galaxies and Black HolesApr 17 2019We address the origin of the golden mass and time for galaxy formation and the onset of rapid black-hole growth. The preferred dark-halo mass of ~$10^{12}M_\odot$ is translated to a characteristic epoch, z~2, at which the typical forming halos have a ... More
Disc Tearing and Bardeen-Petterson Alignment in GRMHD Simulations of Highly Tilted Thin Accretion DiscsApr 17 2019Luminous active galactic nuclei (AGN) and X-Ray binaries (XRBs) tend to be surrounded by geometrically thin, radiatively cooled accretion discs. According to both theory and observations, these are -- in many cases -- highly misaligned with the black ... More
Galaxy mass profiles from strong lensing I: The circular power-law modelApr 17 2019In this series of papers we develop a formalism for constraining mass profiles in strong gravitational lenses with extended images, using fluxes in addition to positional information. We start in this paper with a circular power-law profile and show that ... More
The 3XMM/SDSS Stripe 82 Galaxy Cluster Survey II. X-ray and optical properties of the cluster sampleApr 17 2019We present X-ray and optical properties of the optically confirmed galaxy cluster sample from the 3XMM/SDSS Stripe 82 cluster survey. The sample includes 54 galaxy clusters in the redshift range of 0.05-1.2, with a median redshift of 0.36. We first present ... More
Ionization degree and magnetic diffusivity in the primordial star-forming cloudsApr 17 2019Magnetic fields play such roles in star formation as the angular momentum transport in star-forming clouds, thereby controlling circumstellar disc formation and even binary star formation efficiency. The coupling between the magnetic field and gas is ... More
Radio observations of evaporating objects in the Cygnus OB2 regionApr 17 2019We present observations of the Cygnus OB2 region obtained with the Giant Metrewave Radio Telescope (GMRT) at the frequencies of 325 MHz and 610 MHz. In this contribution we focus on the study of proplyd-like objects (also known as free-floating Evaporating ... More
OGLE-ing the Magellanic System: Cepheids in the BridgeApr 17 2019We present a detailed analysis of Magellanic Bridge Cepheid sample constructed using the OGLE Collection of Variable Stars. Our updated Bridge sample contains 10 classical and 13 anomalous Cepheids. We calculate their individual distances using optical ... More
Hubble captures multiply-imaged ionizing radiation from strongly lensed galaxy at z=2.4Apr 17 2019Apr 18 2019The early Universe was ionized by hard ultraviolet radiation from hot, young stars in the first galaxies. These galaxies contain absorbing neutral Hydrogen which must be configured favorably to allow ionizing escape; only a few dozen cases have been detected ... More
Evolution of young protoclusters embedded in dense massive clumps. A new grid of population synthesis SED models and a new set of L/M evolutionary tracksApr 17 2019A grid of 20 millions 3-1100$\mu$m SED models is presented for synthetic young clusters embedded in dense clumps. The models depend on four primary parameters: the clump mass M$_{clump}$ and dust temperature T$_{dust}$, the fraction of mass f$_{core}$ ... More
A candidate theory/model for Advection-Dominated-Accretion-Flow (ADAF)Apr 17 2019In the present work, we would like to elaborate on Shakura Sunyaev Alpha disk model. To be more concrete, inclusion of the effect of the radiation pressure on the accretion phenomena have been carefully studied. To summarize, the present modification ... More
SDSS J153636.22+044127.0 and its analogues: shocked outflows, not active binary black holesApr 17 2019The binary emission-line system, particularly the binary broad-line emission system, is considered the most effective indicator of the black hole binary. A plausible example of such a system, SDSS J153636.22+044127.0, was reported as the first known object ... More
A massive nebula around the Luminous Blue Variable star RMC143 revealed by ALMAApr 16 2019The Luminous Blue Variable (LBV) RMC143 is located in the outskirts of the 30~Doradus complex, a region rich with interstellar material and hot luminous stars. We report the $3\sigma$ sub-millimeter detection of its circumstellar nebula with ALMA. The ... More
Ionising the Intergalactic Medium by Star Clusters ? The first empirical evidenceApr 16 2019We present a VLT/X-Shooter spectroscopy of the Lyman continuum (LyC) emitting galaxy Ion2 at z=3.2121 and compare it to that of the recently discovered strongly lensed LyC-emitter at z=2.37, known as the "Sunburst" arc. Three main results emerge from ... More
The Pisces Plume and the Magellanic WakeApr 16 2019Using RR Lyrae stars in the Gaia Data Release 2 and Pan-STARRS1 we study the properties of the Pisces Overdensity, a diffuse sub-structure in the outer halo of the Milky Way. We show that along the line of sight, Pisces appears as a broad and long plume ... More
The Discovery of QSOs Behind M31 and M33Apr 16 2019We report the discovery of 11 newly found quasars behind the stellar disks of the spiral galaxies M31 and M33 in the fields covered by the Local Group Galaxy Survey. Their redshifts range from 0.37 to 2.15. Most are X-ray, UV, and IR sources. We also ... More
Simulating Star Clusters Across Cosmic Time: I. Initial Mass Function, Star Formation Rates and EfficienciesApr 16 2019We present a large set of radiation-magneto-hydrodynamic simulations of star formation in self-gravitating, turbulent molecular clouds, modelling the formation of individual massive stars, including their UV radiation feedback. We consider a grid of simulations ... More
OGLE-ing the Magellanic System: RR Lyrae Stars in the BridgeApr 16 2019We use the extended and updated OGLE Collection of Variable Stars to thoroughly analyze distribution of RR Lyrae stars in the Magellanic Bridge. We use photometric metallicities to derive absolute Wesenheit magnitude and then individual distance of each ... More
The Relationship Between Globular Cluster Mass, Metallicity, and Light Element Abundance VariationsApr 16 2019We investigate aluminum abundance variations in the stellar populations of globular clusters using both literature measurements of sodium and aluminum and APOGEE measurements of nitrogen and aluminum abundances. For the latter, we show that the Payne ... More
Star formation in galaxies hosting AGN: A flat trend of star-formation rate with X-ray luminosity of galaxies hosting AGN in the SCUBA-2 Cosmology Legacy SurveyApr 16 2019Feedback processes from active galactic nuclei (AGN) are thought to play a crucial role in regulating star formation in massive galaxies. Previous studies using \textit{Herschel} have resulted in conflicting conclusions as to whether star formation is ... More
The Keplerian three-body encounter II. Comparisons with isolated encounters and impact on gravitational wave merger timescalesApr 16 2019We investigate the role of the Keplerian tidal field generated by a supermassive black hole (SMBH) on the three-body dynamics of stellar mass black holes. We consider two scenarios occurring close to the SMBH: the breakup of unstable triples and three-body ... More
The Keplerian three-body encounter II. Comparisons with isolated encounters and impact on gravitational wave merger timescalesApr 16 2019Apr 18 2019We investigate the role of the Keplerian tidal field generated by a supermassive black hole (SMBH) on the three-body dynamics of stellar mass black holes. We consider two scenarios occurring close to the SMBH: the breakup of unstable triples and three-body ... More
Nonlinear Dynamics of the Cold Atom Analog False VacuumApr 16 2019We investigate the nonlinear dynamics of cold atom systems that can in principle serve as quantum simulators of false vacuum decay. The analog false vacuum manifests as a metastable vacuum state for the relative phase in a two-species Bose-Einstein condensate ... More
On the detectability of visible-wavelength line emission from the local circumgalactic and intergalactic mediumApr 16 2019We describe a new approach to studying the intergalactic and circumgalactic medium in the local Universe: direct detection through narrow-band imaging of ultra-low surface brightness visible-wavelength line emission. We use the hydrodynamical cosmological ... More
Self-Interacting Dark Matter Subhalos in the Milky Way's TidesApr 16 2019We study evolution of self-interacting dark matter (SIDM) subhalos in the Milky Way (MW) tidal field. The interaction between the subhalos and the MW's tides lead to more diverse dark matter distributions in the inner region, compared to their cold dark ... More
Revealing the differences in the SMBH accretion rate distributions of starburst and non-starburst galaxiesApr 16 2019We infer and compare the specific X-ray luminosity distributions for a sample of massive (i.e. $\log_{10} (M*/M\odot) > 10.5$) galaxies split according to their far-infrared-derived star-forming properties (i.e., starburst and non-starburst) and redshift. ... More
Properties of the stochastic astrophysical gravitational wave background: astrophysical sources dependenciesApr 16 2019This article explores the properties (amplitude and shape) of the angular power spectrum of the anisotropies of the astrophysical gravitational wave background (AGWB) focusing on the signatures of the astrophysical models describing sub-galactic physics. ... More
Stochastic gravitational wave background anisotropies: astrophysical dependencies in the LIGO/Virgo and LISA bandsApr 16 2019This letter characterizes the properties of the angular power spectrum in both the LIGO/Virgo and LISA frequency bands. It explores a wide range of self-consistent astrophysical models all calibrated such that they predict the same number of resolved ... More
Resolving the interstellar medium in the nuclear region of two z=5.78 quasar host galaxies with ALMAApr 16 2019We present ALMA observations of the [CII] 158 micron fine structure line and dust continuum emission from two quasars, SDSSJ104433.04-012502.2 and SDSSJ012958.51-003539.7, at z=5.78. The ALMA observations at 0.2" resolution map the dust and gas on kpc ... More
Ly$α$ view around a z=2.84 hyperluminous QSO at a node of the cosmic webApr 16 2019We report on the results of deep and wide-field (1.1 deg$^2$) narrow-band observations with Subaru/Hyper Suprime-Cam (HSC) of a field around a hyperluminous QSO (HLQSO), HS1549+1919, residing in a protocluster at $z=2.84$, to map the large-scale structure ... More
Observational signatures of end-dominated collapse in the S242 filamentary structureApr 16 2019We present new CO (13CO(1-0) and C18O(1-0)) and CS(2-1) line observations of an elongated filamentary structure (length ~30 pc) in the star-forming site S242, which were taken with the OSO-20m telescope. One filament's end hosts the S242 HII region, while ... More
Outflows in the Discs of Active GalaxiesApr 16 2019Recent advances in observations have provided a wealth of measurements of the expansions of outflows in galactic discs out to large radii in a variety of galactic hosts. To provide an updated baseline for the interpretation of such data, and to assess ... More
Spectral Energy Distribution of the First Galaxies: Contribution from Pre-Main-Sequence StarsApr 16 2019One of the major goals of next generation space-borne and ground-based telescopes is to detect and characterize the first galaxies that were in place in the first few hundred million years after the Big Bang. We study the spectral energy distribution ... More
Potential softening and eccentricity dynamics in razor-thin, nearly-Keplerian discsApr 16 2019In many astrophysical problems involving discs (gaseous or particulate) orbiting a dominant central mass, gravitational potential of the disc plays an important dynamical role. Its impact on the motion of external objects, as well as on the dynamics of ... More
Isocyanogen formation in the cold interstellar mediumApr 16 2019Cyanogen (NCCN) is the simplest member of the dicyanopolyynes group, and has been proposed as a major source of the CN radical observed in cometary atmospheres. Although not detected through its rotational spectrum in the cold interstellar medium, this ... More
The rare extended radio-loud narrow-line Seyfert 1 galaxy SDSS J1030+5516 at high resolutionApr 16 2019Recently, Rakshit et al. (2018) reported the discovery of SDSS J103024.95$+$551622.7, a radio-loud narrow-line Seyfert 1 galaxy having a $\sim 100$ kpc scale double-lobed radio structure. Here we analyse archival radio interferometric imaging data taken ... More
Nebular Line Emission During the Epoch of ReionizationApr 16 2019Nebular emission lines associated with galactic HII regions carry information about both physical properties of the ionised gas and the source of ionising photons as well as providing the opportunity of measuring accurate redshifts and thus distances ... More
The lowest detected stellar Fe abundance: The halo star SMSS J160540.18-144323.1Apr 16 2019We report the discovery of SMSS J160540.18-144323.1, a new ultra-metal poor halo star discovered with the SkyMapper telescope. We measure [Fe/H] = -6.2 +- 0.2 (1D LTE), the lowest ever detected abundance of iron in a star. The star is strongly carbon-enhanced, ... More
Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs) VIII. A less biased view of the early co-evolution of black holes and host galaxiesApr 15 2019We present ALMA [CII] line and far-infrared (FIR) continuum observations of three $z > 6$ low-luminosity quasars ($M_{\rm 1450} > -25$) discovered by our Subaru Hyper Suprime-Cam (HSC) survey. The [CII] line was detected in all three targets with luminosities ... More
A global view of the inner accretion/ejection flow around super massive black holes: radiation driven accretion disk winds in a physical contextApr 15 2019Understanding the physics and geometry of accretion and ejection around super massive black holes (SMBHs) is important to understand the evolution of active galactic nuclei (AGN) and therefore of the large scale structures of the Universe. We aim at providing ... More
Investigating the Stellar Mass Growth Histories of Satellite Galaxies as a Function of Infall Time using Phase-SpaceApr 15 2019We compile a large sample of nearby galaxies that are satellites of hosts using a well known SDSS group catalogue. From this sample, we create an `ancient infallers' and `recent infallers' subsample, based on the mean infall time predicted from cosmological ... More
Galaxy-Targeting Approach Optimized for Finding the Radio Afterglows of Gravitational Wave SourcesApr 15 2019Kilonovae and radio afterglows of neutron star merger events have been identified as the two most promising counterparts, of these gravitational wave sources, that can provide arcsecond localization. While several new and existing optical search facilities ... More
A local Lagrangian for MOND as modified inertiaApr 15 2019We propose a local Lagrangian for a point particle where its inertia part is modified in the regime of small accelerations and its potential energy is kept intact. This Lagrangian is such that for the standard gravitational central force it recovers the ... More
Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). VI. Black Hole Mass Measurements of Six Quasars at 6.1<z<6.7Apr 15 2019We present deep near-infrared spectroscopy of six quasars at 6.1<z<6.7 with VLT/X-Shooter and Gemini-N/GNIRS. Our objects, originally discovered through a wide-field optical survey with the Hyper Suprime-Cam (HSC) Subaru Strategic Program (HSC-SSP), have ... More
The morphology and kinematics of the gaseous circumgalactic medium of Milky Way mass galaxies -- II. comparison of IllustrisTNG and Illustris simulation resultsApr 15 2019We have carried out a controlled comparison of the structural and kinematic properties of the circumgalactic medium (CGM) around Milky Way mass galaxies in the Illustris and IllustrisTNG simulations. Very striking differences are found. At z=0, gas column ... More
APEX Observations of the CO Envelope around the Young FUor-type Star V883 OriApr 15 2019The accretion-driven outbursts of young FU Orionis-type stars may be a common stage of pre-main sequence evolution and can have a significant impact on the circumstellar environment as it pertains to the growth of solids and eventually planets. This episodic ... More
Disc formation and fragmentation using radiative non-ideal magnetohydrodynamicsApr 15 2019We investigate the formation and fragmentation of discs using a suite of three-dimensional smoothed particle radiative magnetohydrodynamics simulations. Our models are initialised as 1M$_\odot$ rotating Bonnor-Ebert spheres that are threaded with a uniform ... More
Infrared Galaxies in the Field of the Massive Cluster Abell S1063: Discovery of a Luminous Kiloparsec-Sized HII Region in a Gravitationally Lensed IR-Luminous Galaxy at $z=0.6$Apr 15 2019Using the Spitzer Space Telescope and Herschel Space Observatory, we have conducted a survey of infrared galaxies in the field of the galaxy cluster Abell S1063 (AS1063) at $z=0.347$, which is one of the most massive clusters known and a target of the ... More
Linking gas and galaxies at high redshift: MUSE surveys the environments of six damped Lyman alpha galaxies at z~3Apr 15 2019We present results from a survey of galaxies in the fields of six z>3 Damped Lyman alpha systems (DLAs) using the Multi Unit Spectroscopic Explorer (MUSE) at the Very Large Telescope (VLT). We report a high detection rate of up to ~80% of galaxies within ... More
Revealing Dust Obscured Star Formation in CLJ1449+0856, a Cluster at z=2Apr 15 2019We present SCUBA-2 450$\mu$m and 850$\mu$m data of the mature redshift 2 cluster CLJ1449. We combine this with archival Herschel data to explore the star forming properties of CLJ1449. Using high resolution ALMA and JVLA data we identify potentially confused ... More
A Mechanism for Triple-Ridge Emission Structure of AGN JetsApr 15 2019Recent radio VLBI observations of the relativistic jet in M87 radio galaxy have shown a triple-ridge structure that consists of the conventional limb-brightened feature and a central narrow ridge. Motivated by these observations, we examine a steady axisymmetric ... More
High redshift JWST predictions from IllustrisTNG: Dust modelling and galaxy luminosity functionsApr 15 2019The James Webb Space Telescop (JWST) promises to revolutionise our understanding of the early Universe, and contrasting its upcoming observations with predictions of the $\Lambda$CDM model requires detailed theoretical forecasts. Here, we exploit the ... More
Next generation cosmography with strong lensing and stellar dynamicsApr 15 2019We present a joint strong lensing and stellar dynamical framework for future time-delay cosmography purposes. Based on a pixelated source reconstruction and the axisymmetric Jeans equations, we are capable of constraining cosmological distances and hence ... More
The JCMT BISTRO Survey: The Magnetic Field of the Barnard 1 Star-Forming RegionApr 15 2019We present the POL-2 850~$\mu$m linear polarization map of the Barnard~1 clump in the Perseus molecular cloud complex from the B-fields In STar-forming Region Observations (BISTRO) survey at the James Clerk Maxwell Telescope. We find a trend of decreasing ... More
SPIRE Spectroscopy of Early Type GalaxiesApr 15 2019We present SPIRE spectroscopy for 9 early-type galaxies (ETGs) representing the most CO-rich and far-infrared (FIR) bright galaxies of the volume-limited Atlas3D sample. Our data include detections of mid to high J CO transitions (J=4-3 to J=13-12) and ... More
Inferring AGN jet parameters using Bayesian analysis of VLBI data with non-uniform jet modelApr 15 2019Physical parameters of AGN jets observed with Very Long Baseline Interferometry (VLBI) are usually inferred from the core shift measurements or flux and size measured at a peak frequency of the synchrotron spectrum. Both are preceded by modelling of the ... More
Evolution of three-dimensional Relativistic Ion Weibel Instability: Competition with Kink InstabilityApr 15 2019In this paper, we report our recent findings on the relativistic Weibel instability and its nonlinear saturation by performing numerical simulations of collisionless plasmas. Analysis of the obtained numerical results revealed that the nonlinear phase ... More
Revealing the Two `Horns' of Taurus with GAIA DR2Apr 15 2019In this Letter we investigate the spatial properties of sources from the GAIA catalogue previously identified as being members of the Taurus star forming region and which appear in the Spitzer catalogue. We study an area of sky of 10x15 deg, centred on ... More
Revealing the Two `Horns' of Taurus with GAIA DR2Apr 15 2019Apr 16 2019In this Letter we investigate the spatial properties of sources from the GAIA catalogue previously identified as being members of the Taurus star forming region and which appear in the Spitzer catalogue. We study an area of sky of 10x15 deg, centred on ... More
The effect of dust bias on the census of neutral gas and metals in the high-redshift Universe due to SDSS-II quasar colour selectionApr 15 2019We present a systematic study of the impact of a dust bias on samples of damped Lyman-$\alpha$ absorbers (DLAs). This bias arises as an effect of the magnitude and colour criteria utilized in the Sloan Digital Sky Survey (SDSS) quasar target selection ... More
Axion Structure Formation II: The Wrath of CollapseApr 15 2019The first paper in this series showed that QCD axion dark matter, as a highly-correlated Bose fluid, contains extra-classical physics on cosmological scales. The nature of the derived extra-classical physics is exchange-correlation interactions induced ... More
The ACS Fornax Cluster Survey. III. Globular Cluster Specific Frequencies of Early-Type GalaxiesApr 15 2019The globular cluster (GC) specific frequency ($S_N$), defined as the number of GCs per unit galactic luminosity, represents the efficiency of GC formation (and survival) compared to field stars. Despite the naive expectation that star cluster formation ... More
The Sejong Open cluster Survey (SOS) VI. A small star-forming region in the high Galactic latitude molecular cloud MBM 110Apr 15 2019We present optical photometric, spectroscopic data for the stars in the high Galactic latitude molecular cloud MBM 110. For the complete membership selection of MBM 110, we also analyze WISE mid-infrared data and Gaia astrometric data. Membership of individual ... More
Discovery of six new class II methanol maser transitions, including the unambiguous detection of three torsionally excited lines toward G358.931-0.030Apr 15 2019We present the unambiguous discovery of six new class II methanol maser transitions, three of which are torsionally excited (vt=1). The newly discovered 6.18-GHz 17_-2 -> 18_-3 E (vt=1), 7.68-GHz 12_4 -> 13_3 A- (vt=0), 7.83-GHz 12_4 -> 13_3 A+ (vt = ... More
Mechanism of the Changing Look phenomenon in Active Galactic NucleiApr 14 2019Changing-look phenomenon observed now in a growing number of active galaxies challenges our understanding of the accretion process close to a black hole. We propose a simple explanation for periodic outbursts in sources operating at a few per cent of ... More
Latest advances in the abundance discrepancy problem in photoionized nebulaeApr 14 2019In this paper, we will focus on the advances made in the last few years regarding the abundance discrepancy problem in ionized nebulae. We will show the importance of collecting deep, high-quality data of H II regions and planetary nebulae taken with ... More
The Role of Major Mergers and Nuclear Star Formation in Nearby Obscured QuasarsApr 14 2019We investigate the triggering mechanism and the structural properties of obscured luminous active galactic nuclei from a detailed study of the rest-frame $B$ and $I$ HST images of 29 nearby ($z\approx 0.04-0.4$) optically selected type 2 quasars. Morphological ... More
The Potential of FAST in Detecting Celestial Hydroxyl Masers and Related Science TopicsApr 14 2019The Five Hundred Meter Aperture Spherical Radio Telescope (FAST) will make contributions to the study of Galactic and extragalactic masers. The telescope, now finished construction and commissioning in China, has an innovative design that leads to the ... More
Stellar population analysis on the stacked spectra of double-peaked emission-line galaxiesApr 14 2019The double-peaked emission-line galaxies has long been perceived as objects related with merging galaxies or other phenomena of disturbed dynamical activities, such as outflows and disk rotation. In order to find the connection between the unique activities ... More
The mass-loss, expansion velocities and dust production rates of carbon stars in the Magellanic CloudsApr 14 2019The properties of carbon stars in the Magellanic Clouds (MCs) and their total dust production rates are predicted by fitting their spectral energy distributions (SED) over pre-computed grids of spectra reprocessed by dust. The grids are calculated as ... More
High-Resolution X-ray Imaging Studies of Neutron Stars, Pulsar Wind Nebulae and Supernova RemnantsApr 13 2019Supernova remnants serve as nearby laboratories relevant to many areas in Astrophysics, from stellar and galaxy evolution to extreme astrophysics and the formation of the heavy elements in the Universe. The Chandra X-ray mission has enabled a giant leap ... More
Supernova 2018aoq and a distance to Seyfert galaxy NGC 4151Apr 13 2019We present optical photometric observations of SN 2018aoq from 2 to 100 days after explosion, and 7 spectra at epochs from 11 to 71 days. The light curves and spectra are typical for SNe II-P. As previously reported, SN 2018aoq appears to be of intermediate ... More