121 citations · 756 across the 23 of their papers we have counts for
20 papers · 1 filter
Enhanced Star Formation and Black Hole Accretion Rates in Galaxy Mergers in IllustrisTNG50
Aimee L. Schechter, Shy Genel, Bryan Terrazas +6
Many theoretical and observational studies have suggested that galaxy mergers may trigger enhanced star formation or active galactic nuclei (AGN) activity. We present an analysis o…
An Excess of AGNs Triggered by Galaxy Mergers in MaNGA Galaxies of Stellar Mass
Julia M. Comerford, Rebecca Nevin, James Negus +7
To facilitate new studies of galaxy merger driven fueling of active galactic nuclei (AGNs), we present a catalog of 387 AGNs that we have identified in the final population of over…
"Beads on a String" Star Formation Tied to one of the most Powerful AGN Outbursts Observed in a Cool Core Galaxy Cluster
Osase Omoruyi, Grant R. Tremblay, Francoise Combes +19
With two central galaxies engaged in a major merger and a remarkable chain of 19 young stellar superclusters wound around them in projection, the galaxy cluster SDSS J1531+3414 ($z…
SDSS-IV MaNGA: The Incidence of Major Mergers in type I and II AGN Host Galaxies in the DR15 sample
Héctor Hernández-Toledo, Edgar Cortes-Suárez, Jose Antonio Vázquez-Mata +4
We present a study on the incidence of major mergers and their impact on the triggering of nuclear activity in 47 type I and 236 type II optically-selected AGN from the MaNGA DR15…
The First Quiescent Galaxies in TNG300
Abigail I. Hartley, Erica J. Nelson, Katherine A. Suess +12
We identify the first quiescent galaxies in TNG300, the largest volume of the IllustrisTNG cosmological simulation suite, and explore their quenching processes and time evolution t…
A declining major merger fraction with redshift in the local Universe from the largest-yet catalog of major and minor mergers in SDSS
R. Nevin, L. Blecha, J. Comerford +4
It is difficult to accurately identify galaxy mergers and it is an even larger challenge to classify them by their mass ratio or merger stage. In previous work we used a suite of s…
A Catalog of 71 Coronal Line Galaxies in MaNGA: [NeV] is an Effective AGN Tracer
James Negus, Julia M. Comerford, Francisco Muller Sanchez +5
Despite the importance of AGN in galaxy evolution, accurate AGN identification is often challenging, as common AGN diagnostics can be confused by contributions from star formation…
Towards a More Complete Optical Census of Active Galactic Nuclei, Via Spatially-Resolved Spectroscopy
Julia M. Comerford, James Negus, R. Scott Barrows +4
While emission-line flux ratio diagnostics are the most common technique for identifying active galactic nuclei (AGNs) in optical spectra, applying this approach to single fiber sp…
The Close AGN Reference Survey (CARS): Locating the [O III] wing component in luminous local Type 1 AGN
M. Singha, B. Husemann, T. Urrutia +13
[Abridged]The strong asymmetry in the optical [O III]5007 emission line is one of the best signatures of AGN-driven warm (~10 K) ionized gas outflows on host galaxy scales.…
Evidence of wind signatures in the gas velocity profiles of Red Geysers
Namrata Roy, Kevin Bundy, Rebecca Nevin +9
Spatially resolved spectroscopy from SDSS-IV MaNGA survey has revealed a class of quiescent, relatively common early-type galaxies, termed "red geysers", that possibly host large s…
Accurate Identification of Galaxy Mergers with Stellar Kinematics
R. Nevin, L. Blecha, J. Comerford +9
To determine the importance of merging galaxies to galaxy evolution, it is necessary to design classification tools that can identify different types and stages of merging galaxies…
Spatially Resolved Star Formation and Inside-out Quenching in the TNG50 Simulation and 3D-HST Observations
Erica J. Nelson, Sandro Tacchella, Benedikt Diemer +21
We compare the star forming main sequence (SFMS) -- both integrated and resolved on 1kpc scales -- between the high-resolution TNG50 simulation of IllustrisTNG and observations fro…
A Catalog of 406 AGNs in MaNGA: A Connection between Radio-mode AGN and Star Formation Quenching
Julia M. Comerford, James Negus, Francisco Müller-Sánchez +8
Accurate active galactic nucleus (AGN) identifications and spatially resolved host galaxy properties are a powerful combination for studies of the role of AGNs and AGN feedback in…
Accurate Identification of Galaxy Mergers with Imaging
Nevin, R., Blecha +5
Merging galaxies play a key role in galaxy evolution, and progress in our understanding of galaxy evolution is slowed by the difficulty of making accurate galaxy merger identificat…
The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei. IV. Association with Galaxy Mergers
Julia M. Comerford, Rebecca Nevin, Aaron Stemo +4
Double-peaked narrow emission lines in active galactic nucleus (AGN) spectra can be produced by AGN outflows, rotation, or dual AGNs, which are AGN pairs in ongoing galaxy mergers.…
Two Separate Outflows in the Dual Supermassive Black Hole System NGC 6240
F. Müller-Sánchez, R. Nevin, J. M. Comerford +3
Theoretical models and numerical simulations have established a framework of galaxy evolution in which galaxies merge and create dual supermassive black holes (with separations of…
The Origin of Double-Peaked Narrow Lines in Active Galactic Nuclei III: Feedback from Biconical AGN Outflows
Rebecca Nevin, Julia M. Comerford, Francisco Müller-Sánchez +2
We apply an analytic Markov Chain Monte Carlo model to a sample of 18 AGN-driven biconical outflows that we identified from a sample of active galaxies with double-peaked narrow em…
An Active Galactic Nucleus Caught in the Act of Turning Off and On
Julia M. Comerford, R. Scott Barrows, Francisco Müller-Sánchez +5
We present the discovery of an active galactic nucleus (AGN) that is turning off and then on again in the z=0.06 galaxy SDSS J1354+1327. This episodic nuclear activity is the resul…
The Origin of Double-peaked Narrow Lines in Active Galactic Nuclei II: Kinematic Classifications for the Population at z < 0.1
Rebecca Nevin, Julia Comerford, Francisco Müller-Sánchez +2
We present optical longslit observations of the complete sample of 71 Type 2 active galactic nuclei (AGNs) with double-peaked narrow emission lines at in the Sloan Digita…
The Origin of Double-Peaked Narrow Lines in Active Galactic Nuclei I: Very Large Array Detections of Dual AGNs and AGN Outflows
Francisco Müller-Sanchez, Julia M. Comerford, Rebecca Nevin +3
We have examined a subset of 18 active galactic nuclei (AGNs) drawn from a sample of 81 galaxies that possess double-peaked narrow optical emission line spectra in the Sloan Digita…