output
19952026
most citedThe clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample

3.1k citations

Showing 2021 · astro-ph.GAShow all

12 papers · 2 filters

astro-ph.GA2021★ 26 cited

WALLABY Pre-Pilot Survey: The effects of tidal interaction on radial distribution of color in galaxies of the Eridanus supergroup

Shun Wang, Jing Wang, Bi-Qing For +21

We study the tidal interaction of galaxies in the Eridanus supergroup, using HI data from the pre-pilot survey of WALLABY (Widefield ASKAP L-band Legacy All-sky Blind surveY). We o…

astro-ph.GA2021★ 29 cited

WALLABY Pilot Survey: HI gas disc truncation and star formation of galaxies falling into the Hydra I cluster

T. N. Reynolds, B. Catinella, L. Cortese +25

We present results from our analysis of the Hydra I cluster observed in neutral atomic hydrogen (HI) as part of the Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY). Th…

astro-ph.GA2021★ 18 cited

A persistent double nuclear structure in 3C 84

Junghwan Oh, Jeffrey A. Hodgson, Sascha Trippe +11

3C 84 (NGC 1275) is the radio source at the center of the Perseus Cluster and exhibits a bright radio jet. We observed the source with the Global Millimeter VLBI Array (GMVA) betwe…

astro-ph.GA2021★ 54 cited

Testing the Strong Equivalence Principle. II. Relating the External Field Effect in Galaxy Rotation Curves to the Large-Scale Structure of the Universe

Kyu-Hyun Chae, Harry Desmond, Federico Lelli +2

Theories of modified gravity generically violate the strong equivalence principle, so that the internal dynamics of a self-gravitating system in free fall depends on the strength o…

astro-ph.GA2021★ 5 cited

Determination of Sodium Abundance Ratio from Low-Resolution Stellar Spectra and Its Applications

Jae-Rim Koo, Young Sun Lee, Hye-Jin Park +2

We present a method to determine sodium-abundance ratios ([Na/Fe]) using the Na I D doublet lines in low-resolution ( 2000) stellar spectra. As stellar Na I D lines are ble…

astro-ph.GA2021★ 10 cited

Formation of Multiple Populations of M5 (NGC 5904)

Jae-Woo Lee

With our new Ca-CN-CH-NH photometry, we revisit the globular cluster (GC) M5. We find that M5 is a mono-metallic GC with a small metallicity dispersion. Our carbon abundances show…

astro-ph.GA2021★ 13 cited

WALLABY Pre-Pilot Survey: The effects of angular momentum and environment on the HI gas and star formation properties of galaxies in the Eridanus supergroup

C. Murugeshan, V. A. Kilborn, B. -Q. For +17

We use high-resolution ASKAP observations of galaxies in the Eridanus supergroup to study their HI, angular momentum and star formation properties, as part of the WALLABY pre-pilot…

astro-ph.GA2021★ 17 cited

WALLABY pre-pilot survey: Two dark clouds in the vicinity of NGC 1395

O. Ivy Wong, A. R. H. Stevens, B. -Q. For +34

We present the Australian Square Kilometre Array Pathfinder (ASKAP) WALLABY pre-pilot observations of two `dark' HI sources (with HI masses of a few times 10^8 Msol and no known st…

astro-ph.GA2021★ 18 cited

WALLABY Pilot Survey: First Look at the Hydra I Cluster and Ram Pressure Stripping of ESO 501-G075

T. N. Reynolds, T. Westmeier, A. Elagali +17

We present results from neutral atomic hydrogen (HI) observations of Hydra I, the first cluster observed by the Widefield ASKAP L-band Legacy All-sky Blind Survey (WALLABY) on the…

astro-ph.GA2021★ 16 cited

Ly-alpha Radiative Transfer: A Stokes Vector Approach to Ly-alpha Polarization

Kwang-Il Seon, Hyunmi Song, Seok-Jun Chang

Ly-alpha emitting galaxies and giant Ly-alpha blobs (LABs) have been extensively observed to study the formation history of galaxies. However, the origin of their extended Ly-alpha…

astro-ph.GA2021★ 58 cited

WALLABY Pilot Survey: the diversity of ram pressure stripping of the galactic HI gas in the Hydra Cluster

Jing Wang, Lister Staveley-Smith, Tobias Westmeier +26

This study uses HI image data from the WALLABY pilot survey with the ASKAP telescope, covering the Hydra cluster out to 2.5. We present the projected phase-space distribut…

astro-ph.GA2021★ 14 cited

A cautionary tale in fitting galaxy rotation curves with Bayesian techniques: does Newton's constant vary from galaxy to galaxy?

Pengfei Li, Federico Lelli, Stacy McGaugh +2

The application of Bayesian techniques to astronomical data is generally non-trivial because the fitting parameters can be strongly degenerated and the formal uncertainties are the…