activity
19962026
most citedAuthenticating the Presence of a Relativistic Massive Black Hole Binary in OJ 287 Using its General Relativity Centenary Flare: Improved Orbital Parameters

124 citations · 336 across the 20 of their papers we have counts for

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Showing astro-ph.GAShow all

13 papers · 1 filter

astro-ph.GA2026

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,…

astro-ph.GA2026

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…

astro-ph.GA2025

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…

astro-ph.GA2025★ 1 cited

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…

astro-ph.GA2025

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)…

astro-ph.GA2025★ 4 cited

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…

astro-ph.GA2024

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…

astro-ph.GA2024

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…

astro-ph.GA2024★ 17 cited

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…

astro-ph.GA2024

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…

astro-ph.GA2024★ 2 cited

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…

astro-ph.GA2024

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…

astro-ph.GA2015

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…