Search Results - "Griffith, Roger L."
-
1
A Catalog of 204 Offset and Dual Active Galactic Nuclei (AGNs): Increased AGN Activation in Major Mergers and Separations under 4 kpc
Published in The Astrophysical journal (01-12-2021)“…Abstract During galaxy mergers, gas and dust are driven toward the centers of merging galaxies, triggering enhanced star formation and supermassive black hole…”
Get full text
Journal Article -
2
FURTHER DEFINING SPECTRAL TYPE Y AND EXPLORING THE LOW-MASS END OF THE FIELD BROWN DWARF MASS FUNCTION
Published in The Astrophysical journal (10-07-2012)“…We present the discovery of another seven Y dwarfs from the Wide-field Infrared Survey Explorer (WISE). Using these objects, as well as the first six WISE Y…”
Get full text
Journal Article -
3
The DEEP3 Galaxy Redshift Survey: the impact of environment on the size evolution of massive early-type galaxies at intermediate redshift
Published in Monthly notices of the Royal Astronomical Society (01-02-2012)“…Using data drawn from the DEEP2 and DEEP3 Galaxy Redshift Surveys, we investigate the relationship between the environment and the structure of galaxies…”
Get full text
Journal Article -
4
Discovery of a Low-redshift Hot Dust-obscured Galaxy
Published in The Astrophysical journal (01-12-2023)“…Abstract We report the discovery of the hyperluminous, highly obscured active galactic nuclei (AGN) WISE J190445.04+485308.9 (W1904+4853, hereafter, L bol ∼…”
Get full text
Journal Article -
5
BULGELESS GALAXIES AT INTERMEDIATE REDSHIFT: SAMPLE SELECTION, COLOR PROPERTIES, AND THE EXISTENCE OF POWERFUL ACTIVE GALACTIC NUCLEI
Published in The Astrophysical journal (10-02-2014)“…We present a catalog of bulgeless galaxies, which includes 19,225 objects selected in four of the deepest, largest multi-wavelength data sets available-COSMOS,…”
Get full text
Journal Article -
6
A Catalog of AGN Host Galaxies Observed with HST/ACS: Correlations between Star Formation and AGN Activity
Published in The Astrophysical journal (10-01-2020)“…We present the Advanced Camera for Surveys Active Galactic Nuclei (ACS-AGN) Catalog, a catalog of 2585 active galactic nucleus (AGN) host galaxies that are at…”
Get full text
Journal Article -
7
MID-INFRARED SELECTION OF ACTIVE GALACTIC NUCLEI WITH THE WIDE-FIELD INFRARED SURVEY EXPLORER. I. CHARACTERIZING WISE-SELECTED ACTIVE GALACTIC NUCLEI IN COSMOS
Published in The Astrophysical journal (01-07-2012)“…The Wide-field Infrared Survey Explorer (WISE) is an extremely capable and efficient black hole finder. We present a simple mid-infrared color criterion, W1 -…”
Get full text
Journal Article -
8
THE MOST LUMINOUS GALAXIES DISCOVERED BY WISE
Published in The Astrophysical journal (01-06-2015)“…ABSTRACT We present 20 Wide-field Infrared Survey Explorer (WISE)-selected galaxies with bolometric luminosities Lbol > 1014 L☉, including five with infrared…”
Get full text
Journal Article -
9
HUBBLE SPACE TELESCOPE SPECTROSCOPY OF BROWN DWARFS DISCOVERED WITH THE WIDE-FIELD INFRARED SURVEY EXPLORER
Published in The Astrophysical journal (10-05-2015)“…ABSTRACT We present a sample of brown dwarfs identified with the Wide-field Infrared Survey Explorer (WISE) for which we have obtained Hubble Space Telescope…”
Get full text
Journal Article -
10
THE DISCOVERY OF Y DWARFS USING DATA FROM THE WIDE-FIELD INFRARED SURVEY EXPLORER (WISE)
Published in The Astrophysical journal (10-12-2011)“…We present the discovery of seven ultracool brown dwarfs identified with the Wide-field Infrared Survey Explorer (WISE). Near-infrared spectroscopy reveals…”
Get full text
Journal Article -
11
Galaxy Zoo: morphological classifications for 120 000 galaxies in HST legacy imaging
Published in Monthly notices of the Royal Astronomical Society (01-02-2017)“…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…”
Get full text
Journal Article -
12
A NEW POPULATION OF HIGH- z , DUSTY Lyα EMITTERS AND BLOBS DISCOVERED BY WISE : FEEDBACK CAUGHT IN THE ACT?
Published in The Astrophysical journal (01-06-2013)“…By combining data from the NASA Wide-field Infrared Survey Explorer (WISE) mission with optical spectroscopy from the W. M. Keck telescope, we discover a…”
Get full text
Journal Article -
13
Nearby M, L, and T Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
Published in Publications of the Astronomical Society of the Pacific (01-07-2013)“…ABSTRACT In our effort to complete the census of low-mass stars and brown dwarfs in the immediate solar neighborhood, we present spectra, photometry, proper…”
Get full text
Journal Article -
14
X-RAY OBSERVATIONS OF THE NEW UNUSUAL MAGNETAR SWIFT J1834.9-0846
Published in The Astrophysical journal (20-03-2012)“…We present X-ray observations of the new transient magnetar Swift J1834.9-0846, discovered with the Swift Burst Alert Telescope on 2011 August 7. The data were…”
Get full text
Journal Article -
15
WISE J163940.83-684738.6: A Y DWARF IDENTIFIED BY METHANE IMAGING
Published in The Astrophysical journal (01-11-2012)“…We have used methane imaging techniques to identify the near-infrared counterpart of the bright Wide-field Infrared Survey Explorer (WISE) source WISE…”
Get full text
Journal Article -
16
PARALLAXES AND PROPER MOTIONS OF ULTRACOOL BROWN DWARFS OF SPECTRAL TYPES Y AND LATE T
Published in The Astrophysical journal (10-01-2013)“…We present astrometric measurements of 11 nearby ultracool brown dwarfs of spectral types Y and late-T, based on imaging observations from a variety of…”
Get full text
Journal Article -
17
The WIRED Survey. I. A Bright IR Excess due to Dust Around the Heavily Polluted White Dwarf Galex J193156.8+011745
Published in The Astrophysical journal (01-03-2011)“…With the launch of the Wide-Field Infrared Survey Explorer (WISE), a new era of detecting planetary debris around white dwarfs (WDs) has begun with the WISE…”
Get full text
Journal Article -
18
FIRE SPECTROSCOPY OF FIVE LATE-TYPE T DWARFS DISCOVERED WITH THE WIDE-FIELD INFRARED SURVEY EXPLORER
Published in The Astrophysical journal (10-07-2011)“…We present the discovery of five late-type T dwarfs identified with the Wide-field Infrared Survey Explorer (WISE). Low-resolution near-infrared spectroscopy…”
Get full text
Journal Article -
19
AEGIS: Demographics of X-ray and Optically Selected Active Galactic Nuclei
Published in The Astrophysical journal (10-02-2011)“…We develop a new diagnostic method to classify galaxies into active galactic nucleus (AGN) hosts, star-forming galaxies, and absorption-dominated galaxies by…”
Get full text
Journal Article -
20
1.75 h –1 kpc Separation Dual Active Galactic Nuclei at z = 0.36 in the Cosmos Field
Published in The Astrophysical journal (01-09-2009)Get full text
Journal Article