2.2k citations · 6.9k across the 24 of their papers we have counts for
17 papers · 1 filter
Detecting Radio-AGN signatures in Red geysers
Namrata Roy, Kevin Bundy, Edmond Cheung +19
A new class of quiescent galaxies harboring possible AGN-driven winds has been discovered using spatially resolved optical spectroscopy from the ongoing SDSS-IV MaNGA survey. These…
SDSS IV MaNGA: Characterizing Non-Axisymmetric Motions in Galaxy Velocity Fields Using the Radon Transform
David V. Stark, Kevin A. Bundy, Kyle Westfall +12
We show how the Radon transform (defined as a series of line integrals through an image at different orientations and offsets from the origin) can be used as a simple, non-parametr…
SDSS IV MaNGA: Discovery of an blob associated with a dry galaxy pair -- ejected gas or a `dark' galaxy candidate?
Lihwai Lin, Jing-Hua Lin, Chin-Hao Hsu +31
We report the discovery of a mysterious giant blob that is kpc away from the main MaNGA target 1-24145, one component of a dry galaxy merger, identified in the first…
SDSS-IV MaNGA: The Impact of Diffuse Ionized Gas on Emission-line Ratios, Interpretation of Diagnostic Diagrams, and Gas Metallicity Measurements
Kai Zhang, Renbin Yan, Kevin Bundy +24
Diffuse Ionized Gas (DIG) is prevalent in star-forming galaxies. Using a sample of 365 nearly face-on star-forming galaxies observed by MaNGA, we demonstrate how DIG in star-formin…
Galaxy Zoo: Morphological Classifications for 120,000 Galaxies in HST Legacy Imaging
Kyle W. Willett, Melanie A. Galloway, Steven P. Bamford +18
We present the data release paper for the Galaxy Zoo: Hubble (GZH) project. This is the third phase in a large effort to measure reliable, detailed morphologies of galaxies by usin…
SDSS-IV MaNGA: A serendipitous observation of a potential gas accretion event
Edmond Cheung, David V. Stark, Song Huang +24
The nature of warm, ionized gas outside of galaxies may illuminate several key galaxy evolutionary processes. A serendipitous observation by the MaNGA survey has revealed a large,…
Suppressing star formation in quiescent galaxies with supermassive black hole winds
Edmond Cheung, Kevin Bundy, Michele Cappellari +22
Quiescent galaxies with little or no ongoing star formation dominate the galaxy population above , where their numbers have increased by a fac…
Stellar Populations of Barred Quiescent Galaxies
Edmond Cheung, Charlie Conroy, E. Athanassoula +10
Selecting centrally quiescent galaxies from the Sloan Digital Sky Survey (SDSS) to create high signal-to-noise (>100) stacked spectra with minimal emission line contamination, we a…
Galaxy Zoo: the dependence of the star formation-stellar mass relation on spiral disk morphology
Kyle W. Willett, Kevin Schawinski, Brooke D. Simmons +9
We measure the stellar mass-star formation rate relation in star-forming disk galaxies at z<0.085, using Galaxy~Zoo morphologies to examine different populations of spirals as clas…
Galaxy Zoo: the effect of bar-driven fueling on the presence of an active galactic nucleus in disc galaxies
Melanie A. Galloway, Kyle W. Willett, Lucy F. Fortson +7
We study the influence of the presence of a strong bar in disc galaxies which host an active galactic nucleus (AGN). Using data from the Sloan Digital Sky Survey and morphological…
The host galaxies of X-ray selected Active Galactic Nuclei to z=2.5: Structure, star-formation and their relationships from CANDELS and Herschel/PACS
D. J. Rosario, D. H. McIntosh, A. van der Wel +60
We study the relationship between the structure and star-formation rate (SFR) of X-ray selected low and moderate luminosity active galactic nuclei (AGNs) in the two Chandra Deep Fi…
Galaxy Zoo: CANDELS Barred Disks and Bar Fractions
B. D. Simmons, Thomas Melvin, Chris Lintott +39
The formation of bars in disk galaxies is a tracer of the dynamical maturity of the population. Previous studies have found that the incidence of bars in disks decreases from the l…
Galaxy Zoo: Are Bars Responsible for the Feeding of Active Galactic Nuclei at 0.2 < z < 1.0?
Edmond Cheung, Jonathan R. Trump, E. Athanassoula +19
We present a new study investigating whether active galactic nuclei (AGN) beyond the local universe are preferentially fed via large-scale bars. Our investigation combines data fro…
Galaxy Zoo: An independent look at the evolution of the bar fraction over the last eight billion years from HST-COSMOS
Thomas Melvin, Karen Masters, Chris Lintott +11
We measure the redshift evolution of the bar fraction in a sample of 2380 visually selected disc galaxies found in Cosmic Evolution Survey (COSMOS) Hubble Space Telescope (HST) ima…
CANDELS Visual Classifications: Scheme, Data Release, and First Results
Jeyhan S. Kartaltepe, Mark Mozena, Dale Kocevski +49
We have undertaken an ambitious program to visually classify all galaxies in the five CANDELS fields down to H<24.5 involving the dedicated efforts of 65 individual classifiers. On…
Serendipitous discovery of a massive cD galaxy at z=1.096: Implications for the early formation and late evolution of cD galaxies
F. S. Liu, Yicheng Guo, David C. Koo +18
We have made a serendipitous discovery of a massive cD galaxy at z=1.096 in a candidate rich cluster in the HUDF area of GOODS-South. This brightest cluster galaxy is the most dist…
The Dependence of Quenching upon the Inner Structure of Galaxies at 0.5<z< 0.8 in the DEEP2/AEGIS Survey
Edmond Cheung, S. M. Faber, David C. Koo +25
The shutdown of star formation in galaxies is generally termed `quenching'. Although quenching may occur through a variety of processes, the exact mechanism(s) that is in fact resp…