output
19952026
most citedThe Demography of Massive Dark Objects in Galaxy Centres

4k citations

Showing 2019 · astro-ph.GAShow all

20 papers · 2 filters

astro-ph.GA2019★ 1.5k cited

The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra

Romina Ahumada, Carlos Allende Prieto, Andres Almeida +310

This paper documents the sixteenth data release (DR16) from the Sloan Digital Sky Surveys; the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of…

astro-ph.GA2019★ 56 cited

A Tip of the Red Giant Branch Distance to the Dark Matter Deficient Galaxy NGC1052-DF4 from Deep Hubble Space Telescope Data

Shany Danieli, Pieter van Dokkum, Roberto Abraham +3

Previous studies have shown that the large, diffuse galaxies NGC1052-DF2 and NGC1052-DF4 both have populations of unusually luminous globular clusters as well as a very low dark ma…

astro-ph.GA2019★ 293 cited

The low density and magnetization of a massive galaxy halo exposed by a fast radio burst

J. Xavier Prochaska, Jean-Pierre Macquart, Matthew McQuinn +16

Present-day galaxies are surrounded by cool and enriched halo gas extending to hundreds of kiloparsecs. This halo gas is thought to be the dominant reservoir of material available…

astro-ph.GA2019★ 113 cited

The CFHT Large Area U-band Deep Survey (CLAUDS)

Marcin Sawicki, Stephane Arnouts, Jiasheng Huang +37

The CFHT Large Area U-band Deep Survey (CLAUDS) uses data taken with the MegaCam mosaic imager on CFHT to produce images of 18.60 deg2 with median seeing of FWHM=0.92 arcsec and to…

astro-ph.GA2019★ 51 cited

The SLUGGS Survey: Measuring globular cluster ages using both photometry and spectroscopy

Christopher Usher, Jean P. Brodie, Duncan A. Forbes +4

Globular cluster ages provide both an important test of models of globular cluster formation and a powerful method to constrain the assembly history of galaxies. Unfortunately, mea…

astro-ph.GA2019★ 73 cited

IMF radial gradients in most massive early-type galaxies

F. La Barbera, A. Vazdekis, I. Ferreras +8

Using new long-slit spectroscopy obtained with X-Shooter at ESO-VLT, we study, for the first time, radial gradients of optical and Near-Infrared IMF-sensitive features in a represe…

astro-ph.GA2019★ 108 cited

Quenching as a Contest between Galaxy Halos and their Central Black Holes

Zhu Chen, S. M. Faber, David. C. Koo +27

Existing models of galaxy formation have not yet explained striking correlations between structure and star-formation activity in galaxies, notably the sloped and moving boundaries…

astro-ph.GA2019★ 17 cited

Dark matter and no dark matter: On the halo mass of NGC 1052

Duncan A. Forbes, Adebusola Alabi, Jean P. Brodie +1

The NGC 1052 group, and in particular the discovery of two ultra diffuse galaxies with very low internal velocity dispersions, has been the subject of much attention recently. Here…

astro-ph.GA2019★ 35 cited

Elemental Abundances in M31: First Alpha and Iron Abundance Measurements in M31's Giant Stellar Stream

Karoline M. Gilbert, Evan N. Kirby, Ivanna Escala +3

We present the first measurements of [Fe/H] and [/Fe] abundances, obtained using spectral synthesis modeling, for red giant branch stars in M31's giant stellar stream. The spect…

astro-ph.GA2019★ 19 cited

Resolved and Integrated Stellar Masses in the SDSS-IV/MaNGA Survey, Paper II: Applications of PCA-based stellar mass estimates

Zachary J. Pace, Christy Tremonti, Yanmei Chen +9

A galaxy's stellar mass is one of its most fundamental properties, but it remains challenging to measure reliably. With the advent of very large optical spectroscopic surveys, effi…

astro-ph.GA2019★ 14 cited

Resolved and Integrated Stellar Masses in the SDSS-IV/MaNGA Survey, Paper I: PCA spectral fitting & stellar mass-to-light ratio estimates

Zachary J. Pace, Christy Tremonti, Yanmei Chen +9

We present a method of fitting optical spectra of galaxies using a basis set of six vectors obtained from principal component analysis (PCA) of a library of synthetic spectra of 40…

astro-ph.GA2019★ 35 cited

Structural and Stellar Population Properties vs. Bulge Types in Sloan Digital Sky Survey Central Galaxies

Yifei Luo, S. M. Faber, Aldo Rodriguez-Puebla +12

This paper studies pseudo-bulges (P-bulges) and classical bulges (C-bulges) in Sloan Digital Sky Survey central galaxies using the new bulge indicator , which measures relati…

astro-ph.GA2019★ 187 cited

The CANDELS/SHARDS multi-wavelength catalog in GOODS-N: Photometry, Photometric Redshifts, Stellar Masses, Emission line fluxes and Star Formation Rates

Guillermo Barro, Pablo G. Perez-Gonzalez, Antonio Cava +52

We present a WFC3 F160W (-band) selected catalog in the CANDELS/GOODS-N field containing photometry from the ultraviolet (UV) to the far-infrared (IR), photometric redshifts and…

astro-ph.GA2019★ 46 cited

Signatures of stellar accretion in MaNGA early-type galaxies

Grecco A. Oyarzun, Kevin Bundy, Kyle B. Westfall +10

The late assembly of massive galaxies is thought to be dominated by stellar accretion in their outskirts (beyond 2 effective radii Re) due to dry, minor galaxy mergers. We use obse…

astro-ph.GA2019★ 53 cited

Spatially Resolved Stellar Kinematics of the Ultra-Diffuse Galaxy Dragonfly 44: II. Constraints on Fuzzy Dark Matter

Asher Wasserman, Pieter van Dokkum, Aaron J. Romanowsky +9

Given the absence of directly detected dark matter (DM) as weakly interacting massive particles, there is strong interest in the possibility that DM is an ultra-light scalar field,…

astro-ph.GA2019★ 15 cited

Hyper Wide Field Imaging of the Local Group Dwarf Irregular Galaxy IC 1613: An Extended Component of Metal-poor Stars

Ragadeepika Pucha, Jeffrey L. Carlin, Beth Willman +10

Stellar halos offer fossil evidence for hierarchical structure formation. Since halo assembly is predicted to be scale-free, stellar halos around low-mass galaxies constrain proper…

astro-ph.GA2019★ 112 cited

Spatially-resolved stellar kinematics of the ultra diffuse galaxy Dragonfly 44. I. Observations, kinematics, and cold dark matter halo fits

Pieter van Dokkum, Asher Wasserman, Shany Danieli +8

We present spatially-resolved stellar kinematics of the well-studied ultra diffuse galaxy (UDG) Dragonfly 44, as determined from 25.3 hrs of observations with the Keck Cosmic Web I…

astro-ph.GA2019★ 21 cited

Can intrinsic alignments of elongated low-mass galaxies be used to map the cosmic web at high redshift?

Viraj Pandya, Joel Primack, Peter Behroozi +13

Hubble Space Telescope observations show that low-mass () galaxies at high redshift () tend to be elongated (prolate) rather than disky (oblat…

astro-ph.GA2019★ 233 cited

The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Emission-Line Modeling

Francesco Belfiore, Kyle B. Westfall, Adam Schaefer +12

SDSS-IV MaNGA (Mapping Nearby Galaxies at Apache Point Observatory) is the largest integral-field spectroscopy survey to date, aiming to observe a statistically representative samp…

astro-ph.GA2019★ 357 cited

The Data Analysis Pipeline for the SDSS-IV MaNGA IFU Galaxy Survey: Overview

Kyle B. Westfall, Michele Cappellari, Matthew A. Bershady +28

Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) is acquiring integral-field spectroscopy for the largest sample of galaxies to date. By 2020, the MaNGA Survey --- one o…