Showing 2021 · astro-ph.GAShow all

252 papers · 2 filters

astro-ph.GA2021★ 96 cited

Thermal imaging of dust hiding the black hole in the Active Galaxy NGC 1068

Violeta Gamez Rosas, Jacob W. Isbell, Walter Jaffe +49

In the widely accepted 'Unified Model' solution of the classification puzzle of Active Galactic Nuclei, the orientation of a dusty accretion torus around the central black hole dom…

astro-ph.GA2021★ 28 cited

Galaxy populations in the Hydra I cluster from the VEGAS survey I. Optical properties of a large sample of dwarf galaxies

Antonio La Marca, Reynier Peletier, Enrichetta Iodice +17

At ~50 Mpc, the Hydra I cluster of galaxies is among the closest cluster in the z=0 Universe, and an ideal environment to study dwarf galaxy properties in a cluster environment. We…

astro-ph.GA2021★ 2 cited

The Massive and Distant Clusters of WISE Survey XI: Stellar Mass Fractions and Luminosity Functions of MaDCoWS Clusters at

Bandon Decker, Mark Brodwin, Ripon Saha +14

We present stellar mass fractions and composite luminosity functions (LFs) for a sample of \Ncl\ clusters from the Massive and Distant Clusters of WISE Survey (MaDCoWS) at a redshi…

astro-ph.GA2021★ 22 cited

The Pristine survey -- XV. A CFHT ESPaDOnS view on the Milky Way halo and disc populations

R. Lucchesi, C. Lardo, P. Jablonka +14

We present a one-dimensional, local thermodynamic equilibrium (1D-LTE) homogeneous analysis of 132 stars observed at high-resolution with ESPaDOnS. This represents the largest samp…

astro-ph.GA2021★ 11 cited

Brightest stars of irregular and low-massive spiral galaxies

Nickolay Tikhonov, Olga Galazutdinova, Gulnara Karataeva +4

A search for a correlation between the luminosities of the brightest stars and luminosities of their host galaxies was carried out on archived Hubble Space Telescope (HST) F606W or…

astro-ph.GA2021★ 12 cited

NOEMA confirmation of an optically dark ALMA-AzTEC submillimetre galaxy at . A late-stage starburst prior to quenching

Soh Ikarashi, R. J. Ivison, William I. Cowley +1

We have obtained 1 and 3 mm spectral scans of ASXDF1100.053.1 using NOEMA. ASXDF1100.053.1 is an unlensed optically dark millimetre-bright SMG with (), which…

astro-ph.GA2021★ 38 cited

LoTSS Jellyfish Galaxies III. The first identification of jellyfish galaxies in the Perseus cluster

Ian D. Roberts, Reinout J. van Weeren, Roland Timmerman +4

In this paper we report the first identification of jellyfish galaxies in the Perseus cluster (Abell 426). We identified four jellyfish galaxies (LEDA 2191078, MCG +07-07-070, UGC…

astro-ph.GA2021★ 95 cited

ALMA-IMF I -- Investigating the origin of stellar masses: Introduction to the Large Program and first results

F. Motte, S. Bontemps, T. Csengeri +61

The ALMA-IMF Large Program imaged a total noncontiguous area of 53pc2, covering 15 extreme, nearby protoclusters of the Milky Way. They were selected to span relevant early protocl…

astro-ph.GA2021★ 287 cited

The mass distribution in the Galactic Centre from interferometric astrometry of multiple stellar orbits

GRAVITY Collaboration, R. Abuter, N. Aimar +62

The stars orbiting the compact radio source Sgr A* in the Galactic Centre are precision probes of the gravitational field around the closest massive black hole. In addition to adap…

astro-ph.GA2021★ 35 cited

Deep Images of the Galactic Center with GRAVITY

GRAVITY Collaboration, R. Abuter, N. Aimar +65

Stellar orbits at the Galactic Center provide a very clean probe of the gravitational potential of the supermassive black hole. They can be studied with unique precision, beyond th…

astro-ph.GA2021

The cosmic environment overtakes the local density in shaping galaxy star formation

Jian Ren, Zhizheng Pan, XianZhong Zheng +11

The gas supply from the cosmic web is the key to sustain star formation in galaxies. It remains to be explored how the cosmic large-scale structure (LSS) effects on galaxy evolutio…

astro-ph.GA2021★ 34 cited

Disentangling the formation mechanisms of nuclear star clusters

Katja Fahrion, Ryan Leaman, Mariya Lyubenova +1

Nuclear star clusters (NSCs) are massive star clusters found ubiquitously in the centres of galaxies, from the dwarf regime to massive ellipticals and spirals. The fraction of nucl…

astro-ph.GA2021★ 32 cited

Stellar mass segregation as separating classifier between globular clusters and ultra-faint dwarf galaxies

Holger Baumgardt, Johannes Faller, Nicholas Meinhold +2

We have determined the amount of stellar mass segregation in over 50 globular clusters and ultra-faint dwarf galaxy candidates based on deep HST and ground-based photometry. We fin…

astro-ph.GA2021

Quantifying the Poor Purity and Completeness of Morphological Samples Selected by Galaxy Colour

Rebecca J. Smethurst, Karen L. Masters, Brooke D. Simmons +7

The galaxy population is strongly bimodal in both colour and morphology, and the two measures correlate strongly, with most blue galaxies being late-types (spirals) and most early-…

astro-ph.GA2021★ 33 cited

A High-Resolution Investigation of the Multi-Phase ISM in a Galaxy during the First Two Billion Years

S. Dye, S. A. Eales, H. L. Gomez +20

We have carried out the first spatially-resolved investigation of the multi-phase interstellar medium (ISM) at high redshift, using the z=4.24 strongly-lensed sub-millimetre galaxy…

astro-ph.GA2021

The Cen A galaxy group: dynamical mass and missing baryons

Oliver Müller, Federico Lelli, Benoit Famaey +5

The nearby elliptical galaxy Cen A is surrounded by a flattened system of dwarf satellite galaxies with coherent motions. Using a novel Bayesian approach, we measure the mean rotat…

astro-ph.GA2021★ 13 cited

Differential attenuation in star-forming galaxies at 0.3 1.5 in the SHARDS/CANDELS field

L. Rodríguez-Muñoz, G. Rodighiero, P. G. Pérez-González +21

We use a sample of 706 galaxies, selected as [OII]3727 ([OII]) emitters in the Survey for High- Absorption Red and Dead Sources (SHARDS) on the CANDELS/GOODS-N field, to stud…

astro-ph.GA2021★ 25 cited

The evolution of temperature and density structures of OB cluster-forming molecular clumps

Yuxin Lin, Friedrich Wyrowski, Hauyu Baobab Liu +4

OB star clusters originate from parsec-scale massive molecular clumps. We aim to understand the evolution of temperature and density structures on the intermediate-scale ($\lesssim…

astro-ph.GA2021

SDSS-IV MaNGA: Cannibalism Caught in the Act -- on the Frequency of Occurrence of Multiple Cores in Brightest Cluster Galaxies

Yun-Hsin Hsu, Yen-Ting Lin, Song Huang +16

Although it is generally accepted that massive galaxies form in a two-phased fashion, beginning with a rapid mass buildup through intense starburst activities, followed by primaril…

astro-ph.GA2021★ 45 cited

An ALMA Spectroscopic Survey of the Brightest Submillimeter Galaxies in the SCUBA-2-COSMOS field (AS2COSPEC): Survey Description and First Results

Chian-Chou Chen, Cheng-Lin Liao, Ian Smail +11

We introduce an ALMA band 3 spectroscopic survey, targeting the brightest submillimeter galaxies (SMGs) in the COSMOS field. Here we present the first results based on the 18 prima…

astro-ph.GA2021★ 8 cited

Consistent analysis of the AGN LF in X-ray and MIR in the XMM-LSS field

Jack Runburg, Duncan Farrah, Anna Sajina +9

The luminosity function (LF) of active galactic nuclei (AGN) probes the history of supermassive black hole assembly and growth across cosmic time. To mitigate selection biases, we…

astro-ph.GA2021★ 21 cited

A Multiwavelength Study of ELAN Environments (AMUSE). Mass budget, satellites spin alignment and gas infall in a massive quasar host halo

Fabrizio Arrigoni Battaia, Chian-Chou Chen, Hau-Yu Baobab Liu +14

The systematic targeting of extended Ly emission around high-redshift quasars resulted in the discovery of rare and bright Enormous Ly Nebulae (ELANe) associated with multipl…

astro-ph.GA2021★ 32 cited

Satellite quenching was not important for z1 clusters: most quenching occurred during infall

S. V. Werner, N. A. Hatch, A. Muzzin +4

We quantify the relative importance of environmental quenching versus pre-processing in clusters by analysing the infalling galaxy population in the outskirts of 15 galaxy…

astro-ph.GA2021★ 1 cited

A SPHERE survey of self-shadowed planet-forming disks

A. Garufi, C. Dominik, C. Ginski +20

To date, nearly two hundred planet-forming disks have been imaged with high resolution. Our propensity to study bright and extended objects is however biasing our view of the disk…