124 citations · 336 across the 20 of their papers we have counts for
20 papers
Here Be SDRAGNs - Spiral Galaxies Hosting Large Double Radio Sources
Jean Tate, William C. Keel, Michael O'Keeffe +16
We present a sample of large double radio sources hosted by spiral galaxies (Spiral Double Radio Active Galactic Nuclei, SDRAGNs). Candidates were selected during Radio Galaxy Zoo,…
Overlap Zoo Beta: A Catalogue of ~800 Occulting Pairs in the DESI Legacy Survey using Citizen Science
T. Butrum, B. Holwerda, W. C. Keel +11
Overlapping galaxies, in which a foreground galaxy partially overlaps a background galaxy, offer a unique opportunity to measure dust attenuation, a key nuisance parameter in galax…
Globular Clusters in the Galaxy Cluster MACS0416 at z = 0.397
Jessica M. Berkheimer, Rogier A. Windhorst, William E. Harris +27
We present a photometric analysis of globular clusters (GCs) in the massive galaxy cluster MACS J0416.1-2403 (z = 0.397) using deep JWST/NIRCam imaging from the PEARLS program. PSF…
The luminosity history of fading local quasars over 10 years as observed by VLT/MUSE
C. Finlez, E. Treister, F. Bauer +10
We present a comprehensive study of five nearby active galaxies featuring large (tens of kpc) extended emission-line regions (EELRs). The study is based on large-format integral fi…
A Demonstration of Interstellar Navigation Using New Horizons
Tod R. Lauer, David H. Munro, John R. Spencer +51
As NASA's New Horizons spacecraft exits the Solar System bound for interstellar space, it has traveled so far that the nearest stars have shifted markedly from their positions seen…
Timescales for the Effects of Interactions on Galaxy Properties and SMBH Growth
D. O'Ryan, B. D. Simmons, A. L. Faisst +15
Galaxy interaction and merging have clear effects on the systems involved. We find an increase in the star formation rate (SFR), potential ignition of active galactic nuclei (AGN)…
JWST's PEARLS: A z=6 quasar in a train-wreck galaxy merger system
Madeline A. Marshall, Rogier A. Windhorst, Giovanni Ferrami +35
We present JWST NIRSpec integral field spectroscopy observations of the z=5.89 quasar NDWFS J1425+3254 from 0.6-5.3 microns, covering the rest-frame ultraviolet and optical at a sp…
Structural Decomposition of Merger-Free Galaxies Hosting Luminous AGNs
Matthew J. Fahey, Izzy. L. Garland, Brooke. D. Simmons +10
Active galactic nucleus (AGN) growth in disk-dominated, merger-free galaxies is poorly understood, largely due to the difficulty in disentangling the AGN emission from that of the…
Galaxy Zoo DESI: large-scale bars as a secular mechanism for triggering AGN
Izzy L. Garland, Mike Walmsley, Maddie S. Silcock +13
Despite the evidence that supermassive black holes (SMBHs) co-evolve with their host galaxy, and that most of the growth of these SMBHs occurs via merger-free processes, the underl…
JWST's PEARLS: resolved study of the stellar and dust components in starburst galaxies at cosmic noon
M. Polletta, B. L. Frye, N. Garuda +35
Dusty star-forming galaxies (DSFGs) contribute significantly to the stellar buildup at cosmic noon. Major mergers and gas accretion are often invoked to explain DSFGs' prodigious s…
Birds of a Feather: Resolving Stellar Mass Assembly With JWST/NIRCam in a Pair of Kindred Dusty Star-forming Galaxies Lensed by the PLCK G165.7+67.0 Cluster
Patrick S. Kamieneski, Brenda L. Frye, Rogier A. Windhorst +38
We present a new parametric lens model for the G165.7+67.0 galaxy cluster, which was discovered with through its bright submillimeter flux, originating from a pair of extr…
PEARLS: Discovery of Point-Source Features Within Galaxies in the North Ecliptic Pole Time Domain Field
Rafael Ortiz, Rogier A. Windhorst, Seth H. Cohen +36
The first public 0.9-4.4μm NIRCam images of the North Ecliptic Pole (NEP) Time Domain Field (TDF) uncovered galaxies displaying point-source features in their cores as seen in the…
Ground- and Space-Based Dust Observations of VV 191 Overlapping Galaxy Pair
C. Robertson, B. Holwerda, J. Young +12
The Balmer decrement (H/H) provides a constraint on attenuation, the cumulative effects of dust grains in the ISM. The ratio is a reliable spectroscopic tool for deriving the…
Authenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters
Lankeswar Dey, M. J. Valtonen, A. Gopakumar +5
Results from regular monitoring of relativistic compact binaries like PSR 1913+16 are consistent with the dominant (quadrupole) order emission of gravitational waves (GWs). We show…
What can the Occult do for you? STarlight Attenuation & Reddening Survey of Multiple Occulting Galaxies (STARSMOG)
B. W. Holwerda, W. C. Keel
Interstellar dust is still the dominant uncertainty in Astronomy, limiting precision in e.g., cosmological distance estimates and models of how light is re-processed within a galax…
Surface Brightness Profiles of Composite Images of Compact Galaxies at z~4-6 in the HUDF
N. P. Hathi, R. A. Jansen, R. A. Windhorst +4
The Hubble Ultra Deep Field (HUDF) contains a significant number of B, V and i'-band dropout objects, many of which were recently confirmed to be young star-forming galaxies at z~4…
A Deep Radio Survey of Abell 2125 III: The Cluster Core - Merging and Stripping
F. N. Owen, W. C. Keel, Q. D. Wang +2
We use radio, near-IR, optical, and X-ray observations to examine dynamic processes in the central region of Abell 2125. In addition to the central triple, including members of bot…
A Simple Prediction on the Surface Density of Galaxies at z ~ 6
Haojing Yan, Rogier A. Windhorst, Stephen C. Odewahn +3
Systematic surveys are being proposed to discover a significant number of galaxies at z ~ 6, which is now suggested as the epoch when the reionization era of the Universe ends. To…
GRB 991216 Joins the Jet Set: Discovery and Monitoring of its Optical Afterglow
J. P. Halpern, R. Uglesich, N. Mirabal +8
The optical light curve of the energetic gamma-ray burst GRB 991216 is consistent with jet-like behavior in which a power-law decay steepens from t**(-1.22 +/- 0.04) at early times…
Distribution and Content of Dust in Overlapping Galaxy Systems
Raymond E. White, William C. Keel, Christopher J. Conselice
Partially overlapping galaxies are used to directly determine the effective absorption in spiral galaxy disks. The non-overlapping parts of the galaxies and symmetry considerations…