Search Results - "Tremblay, Grant R."
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1
Using Machine Learning to Determine Morphologies of z < 1 AGN Host Galaxies in the Hyper Suprime-Cam Wide Survey
Published in The Astrophysical journal (01-02-2023)“…Abstract We present a machine-learning framework to accurately characterize the morphologies of active galactic nucleus (AGN) host galaxies within z < 1. We…”
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2
A Candidate Supermassive Black Hole in a Gravitationally Lensed Galaxy at Z ≈ 10
Published in Astrophysical journal. Letters (01-04-2024)“…Abstract While supermassive black holes (SMBHs) are widely observed in the nearby and distant Universe, their origin remains debated with two viable formation…”
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3
“Beads-on-a-string” Star Formation Tied to One of the Most Powerful Active Galactic Nucleus Outbursts Observed in a Cool-core Galaxy Cluster
Published in The Astrophysical journal (01-03-2024)“…Abstract With two central galaxies engaged in a major merger and a remarkable chain of 19 young stellar superclusters wound around them in projection, the…”
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4
The Recoiling Black Hole Candidate 3C 186: Spatially Resolved Quasar Feedback and Further Evidence of a Blueshifted Broad-line Region
Published in The Astrophysical journal (01-07-2018)“…We present the results of integral field spectroscopy of the gravitational wave (GW) recoiling black hole candidate 3C 186. The goal of the observation is to…”
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5
Testing the Limits of AGN Feedback and the Onset of Thermal Instability in the Most Rapidly Star-forming Brightest Cluster Galaxies
Published in The Astrophysical journal (01-12-2022)“…Abstract We present new, deep, narrow- and broadband Hubble Space Telescope observations of seven of the most star-forming brightest cluster galaxies (BCGs)…”
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6
Clocking the formation of today’s largest galaxies: wide field integral spectroscopy of brightest cluster galaxies and their surroundings
Published in Monthly notices of the Royal Astronomical Society (01-01-2020)“…ABSTRACT The formation and evolution of local brightest cluster galaxies (BCGs) is investigated by determining the stellar populations and dynamics from the…”
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7
Evidence for heavy-seed origin of early supermassive black holes from a z ≈ 10 X-ray quasar
Published in Nature astronomy (01-01-2024)“…Observations of quasars reveal that many supermassive black holes (BHs) were in place less than 700 Myr after the Big Bang. However, the origin of the first…”
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8
Extended X-Ray Emission Associated with the Radio Lobes and the Environments of 60 Radio Galaxies
Published in The Astrophysical journal (01-05-2021)“…Abstract This paper studied the faint, diffuse extended X-ray emission associated with the radio lobes and the hot gas in the intracluster medium (ICM)…”
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9
STAR FORMATION IN INTERMEDIATE REDSHIFT 0.2 < z < 0.7 BRIGHTEST CLUSTER GALAXIES
Published in The Astrophysical journal (20-12-2016)“…ABSTRACT We present a multi-wavelength photometric and spectroscopic study of 42 Brightest Cluster Galaxies (BCGs) in two samples of galaxy clusters chosen for…”
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10
Revealing a Highly Dynamic Cluster Core in Abell 1664 with Chandra
Published in The Astrophysical journal (10-04-2019)“…We present new, deep (245 ks) Chandra observations of the galaxy cluster Abell 1664 (z = 0.1283). These images reveal rich structure, including elongation and…”
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11
A Broad Line-width, Compact, Millimeter-bright Molecular Emission Line Source near the Galactic Center
Published in Astrophysical journal. Letters (01-06-2024)“…A compact source, G0.02467–0.0727, was detected in Atacama Large Millimeter/submillimeter Array 3 mm observations in continuum and very broad line emission…”
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12
Hubble Space Telescope Far-ultraviolet Observations of Brightest Cluster Galaxies: The Role of Star Formation in Cooling Flows and BCG Evolution
Published in The Astrophysical journal (20-08-2010)“…Quillen et al. and O'Dea et al. carried out a Spitzer study of a sample of 62 brightest cluster galaxies (BCGs) from the ROSAT brightest cluster sample, which…”
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13
Herschel ⋆ observations of extended atomic gas in the core of the Perseus cluster
Published in Monthly notices of the Royal Astronomical Society (11-11-2012)“…Abstract We present Herschel observations of the core of the Perseus cluster of galaxies. Especially intriguing is the network of filaments that surround the…”
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14
Episodic Star Formation Coupled to Reignition of Radio Activity in 3C 236
Published in The Astrophysical journal (20-05-2010)“…We present Hubble Space Telescope Advanced Camera for Surveys and STIS FUV/NUV/optical imaging of the radio galaxy 3C 236, whose relic {approx}4 Mpc radio jet…”
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15
The Astropy Project: Sustaining and Growing a Community-oriented Open-source Project and the Latest Major Release (v5.0) of the Core Package
Published in The Astrophysical journal (01-08-2022)“…Abstract The Astropy Project supports and fosters the development of open-source and openly developed Python packages that provide commonly needed…”
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16
The Warped Nuclear Disk of Radio Galaxy 3C 449
Published in The Astrophysical journal (20-05-2006)“…Among radio galaxies containing nuclear dust disks, the bipolar jet axis is generally observed to be perpendicular to the disk major axis. The FR I radio…”
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17
Cold, clumpy accretion onto an active supermassive black hole
Published in Nature (London) (09-06-2016)“…The so-called accretion flow that powers the growth of supermassive black holes in galaxy centres is assumed to be dominated by a smooth, steady flow of very…”
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18
The Environment of z >1 3CR Radio Galaxies and QSOs: From Proto-Clusters to Clusters of Galaxies?
Published 10-05-2016“…We study the cluster environment for a sample of 21 radio loud AGN from the 3CR catalog at z>1, 12 radio galaxies and 9 quasars with HST images in the optical…”
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MASSIVE MOLECULAR GAS FLOWS IN THE A1664 BRIGHTEST CLUSTER GALAXY
Published in The Astrophysical journal (20-03-2014)“…We report ALMA Early Science CO(1-0) and CO(3-2) observations of the brightest cluster galaxy (BCG) in A1664. The BCG contains 1.1 x 10 super(10) M sub([middot…”
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20
A 1010 Solar Mass Flow of Molecular Gas in the A1835 Brightest Cluster Galaxy
Published in The Astrophysical journal (2014)“…We report ALMA Early Science observations of the A1835 brightest cluster galaxy (BCG) in the CO (3-2) and CO (1-0) emission lines. We detect 5 × 1010 M of…”
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