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19952026
most citedThe Demography of Massive Dark Objects in Galaxy Centres

4k citations

Showing 2021Show all

27 papers · 1 filter

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.CO2021★ 5 cited

HeII Ly Transmission Spikes and Absorption Troughs in Eight High-resolution Spectra Probing the End of HeII Reionization

Kirill Makan, Gábor Worseck, Frederick B. Davies +3

We present statistics of HeII Lya transmission spikes and large-scale absorption troughs using archival high-resolution (-) far-UV spectra of eight HeI…

astro-ph.GA2021★ 37 cited

The chemical composition of globular clusters in the Local Group

S. S. Larsen, P. Eitner, E. Magg +5

We present detailed abundance measurements for 45 globular clusters (GCs) in galaxies in (and, in one case, beyond) the Local Group. The measurements are based on new high-resoluti…

astro-ph.GA2021★ 68 cited

NGC5846-UDG1: A galaxy formed mostly by star formation in massive, extremely dense clumps of gas

Shany Danieli, Pieter van Dokkum, Sebastian Trujillo-Gomez +10

It has been shown that ultra-diffuse galaxies (UDGs) have higher specific frequencies of globular clusters on average than other dwarf galaxies with similar luminosities. The UDG N…

astro-ph.GA2021★ 45 cited

Ultra-Diffuse Galaxies in the Perseus Cluster: Comparing Galaxy Properties with Globular Cluster System Richness

Jonah S. Gannon, Duncan A. Forbes, Aaron J. Romanowsky +6

It is clear that within the class of ultra-diffuse galaxies (UDGs) there is an extreme range in the richness of their associated globular cluster (GC) systems. Here, we report the…

astro-ph.GA2021★ 31 cited

The deepest view of RBS 797: evidence for two pairs of equidistant X-ray cavities

Francesco Ubertosi, Myriam Gitti, Fabrizio Brighenti +14

We present the first results of a deep observation of the galaxy cluster RBS 797, whose previous X-ray studies revealed two pronounced X-ray cavities in the east-west (E-…

astro-ph.GA2021★ 12 cited

Discovery of a protocluster core associated with an enormous Ly Nebula at

Qiong Li, Ran Wang, Helmut Dannerbauer +10

The MAMMOTH-1 nebula at is an enormous Ly nebula (ELAN) extending to a 440 kpc scale at the center of the extreme galaxy overdensity BOSS 1441. In this paper, we…

astro-ph.IM2021★ 120 cited

The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) Survey Design, Reductions, and Detections

Karl Gebhardt, Erin Mentuch Cooper, Robin Ciardullo +60

We describe the survey design, calibration, commissioning, and emission-line detection algorithms for the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). The goal of HETDEX…

astro-ph.IM2021★ 151 cited

The HETDEX Instrumentation: Hobby-Eberly Telescope Wide Field Upgrade and VIRUS

Gary J. Hill, Hanshin Lee, Phillip J. MacQueen +46

The Hobby-Eberly Telescope (HET) Dark Energy Experiment (HETDEX) is undertaking a blind wide-field low-resolution spectroscopic survey of 540 square degrees of sky to identify and…

astro-ph.CO2021

A Novel Framework for Modeling Weakly Lensing Shear Using Kinematics and Imaging at Moderate Redshift

Brian DiGiorgio, Kevin Bundy, Kyle B. Westfall +2

Kinematic weak lensing describes the distortion of a galaxy's projected velocity field due to lensing shear, an effect recently reported for the first time by Gurri et al. based on…

astro-ph.GA2021★ 9 cited

The Baltimore Oriole's Nest: Cool Winds from the Inner and Outer Parts of a Star-Forming Galaxy at z=1.3

Weichen Wang, Susan A. Kassin, S. M. Faber +12

Strong galactic winds are ubiquitous at . However, it is not well known where inside galaxies these winds are launched from. We study the cool winds (\,K) in…

astro-ph.CO2021★ 36 cited

Second Data Release of the COSMOS Lyman-alpha Mapping and Tomographic Observation: The First 3D Maps of the Detailed Cosmic Web at 2.05<z<2.55

Benjamin Horowitz, Khee-Gan Lee, Metin Ata +12

We present the second data release of the COSMOS Lyman-Alpha Mapping And Tomography Observations (CLAMATO) Survey conducted with the LRIS spectrograph on the Keck-I telescope. This…

astro-ph.GA2021★ 100 cited

Final Targeting Strategy for the SDSS-IV APOGEE-2S Survey

Felipe A. Santana, Rachael L. Beaton, Kevin R. Covey +43

APOGEE is a high-resolution (R sim 22,000), near-infrared, multi-epoch, spectroscopic survey of the Milky Way. The second generation of the APOGEE project, APOGEE-2, includes an ex…

astro-ph.GA2021★ 99 cited

Final Targeting Strategy for the SDSS-IV APOGEE-2N Survey

Rachael L. Beaton, Ryan J. Oelkers, Christian R. Hayes +57

APOGEE-2 is a dual-hemisphere, near-infrared (NIR), spectroscopic survey with the goal of producing a chemo-dynamical mapping of the Milky Way Galaxy. The targeting for APOGEE-2 is…

astro-ph.GA2021★ 42 cited

Hubble Space Telescope Observations of NGC 253 Dwarf Satellites: Discovery of Three Ultra-faint Dwarf Galaxies

Burçin Mutlu-Pakdil, David J. Sand, Denija Crnojević +8

We present deep Hubble Space Telescope imaging of five faint dwarf galaxies associated with the nearby spiral NGC 253 (D3.5 Mpc). Three of these are newly discovered ultra…

astro-ph.GA2021★ 5 cited

Optical Spectroscopy of Dual Quasar Candidates from the Subaru HSC-SSP program

Shenli Tang, John D. Silverman, Xuheng Ding +30

We report on a spectroscopic program to search for dual quasars using Subaru Hyper Suprime-Cam (HSC) images of SDSS quasars which represent an important stage during galaxy mergers…

astro-ph.SR2021★ 9 cited

Hubble Space Telescope imaging of the extremely metal-poor globular cluster EXT8 in Messier 31

S. S. Larsen, A. J. Romanowsky, J. P. Brodie

We recently found the globular cluster (GC) EXT8 in M31 to have an extremely low metallicity of [Fe/H]=-2.91+/-0.04 using high-resolution spectroscopy. Here we present a colour-mag…

astro-ph.GA2021★ 73 cited

Resolved Dwarf Galaxy Searches within ~5 Mpc with the Vera Rubin Observatory and Subaru Hyper Suprime-Cam

Burçin Mutlu-Pakdil, David J. Sand, Denija Crnojević +7

We present a preview of the faint dwarf galaxy discoveries that will be possible with the Vera C. Rubin Observatory and Subaru Hyper Suprime-Cam in the next decade. In this work, w…

astro-ph.GA2021★ 85 cited

X-ray bubbles in the circumgalactic medium of TNG50 Milky Way- and M31-like galaxies: signposts of supermassive black hole activity

Annalisa Pillepich, Dylan Nelson, Nhut Truong +5

The TNG50 cosmological simulation produces X-ray emitting bubbles, shells, and cavities in the circumgalactic gas above and below the stellar disks of Milky Way- and Andromeda-like…

astro-ph.GA2021★ 4 cited

A Complete 16 micron-Selected Galaxy Sample at : Mid-infrared Spectral Energy Distributions

J. -S. Huang, Y. -S. Dai, S. P. Willner +21

We describe a complete, flux-density-limited sample of galaxies at redshift selected at 16 micron. At the selection wavelength near 8 micron rest, the observed emis…

astro-ph.HE2021★ 16 cited

Constraining bright optical counterparts of Fast Radio Bursts

C. Nuñez, N. Tejos, G. Pignata +14

Fast Radio Bursts (FRBs) are extremely energetic pulses of millisecond duration and unknown origin. In order to understand the phenomenon that emits these pulses, targeted and unta…

astro-ph.HE2021★ 2 cited

Multi-wavelength follow-up of FRB 180309

Kshitij Aggarwal, Sarah Burke-Spolaor, Nicolas Tejos +5

We report on the results of multi-wavelength follow-up observations with Gemini, VLA, and ATCA, to search for a host galaxy and any persistent radio emission associated with FRB 18…

astro-ph.GA2021★ 15 cited

Recovering the origins of the lenticular galaxy NGC 3115 using multi-band imaging

Maria Luisa Buzzo, Arianna Cortesi, Jose A. Hernandez-Jimenez +16

A detailed study of the morphology of lenticular galaxies is an important way to understand how this type of galaxy formed and evolves over time. Decomposing a galaxy into its comp…

astro-ph.GA2021★ 15 cited

The Stars of the HETDEX Survey. I. Radial Velocities and Metal-Poor Stars from Low-Resolution Stellar Spectra

Keith Hawkins, Greg Zeimann, Chris Sneden +18

The Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) is an unbiased, massively multiplexed spectroscopic survey, designed to measure the expansion history of the universe thr…