Search Results - "Moran, Edward C."
-
1
Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. I. A Reverberation-based Measurement of the Black Hole Mass
Published in The Astrophysical journal (20-10-2005)“…A reverberation-mapping program on NGC 4395, the least luminous known Seyfert 1 galaxy, undertaken with the Space Telescope Imaging Spectrograph on the Hubble…”
Get full text
Journal Article -
2
Chemical abundances in active galaxies
Published in Monthly notices of the Royal Astronomical Society (01-08-2020)“…ABSTRACT The Sloan Digital Sky Survey (SDSS) has proved to be a powerful resource for understanding the physical properties and chemical composition of…”
Get full text
Journal Article -
3
Galactic outflow emission line profiles: evidence for dusty, radiatively driven ionized winds in Mrk 462
Published in Monthly notices of the Royal Astronomical Society (01-09-2023)“…ABSTRACT Over the past half century, gas outflows and winds have been observed as asymmetric emission lines in a wide range of astrophysical contexts,…”
Get full text
Journal Article -
4
The Frequency of Polarized Broad Emission Lines in Type 2 Seyfert Galaxies
Published in The Astrophysical journal (10-09-2000)Get full text
Journal Article -
5
Polarized Broad-Line Emission from Low-Luminosity Active Galactic Nuclei
Published in The Astrophysical journal (10-11-1999)Get full text
Journal Article -
6
Galaxy Zoo: bulgeless galaxies with growing black holes
Published in Monthly notices of the Royal Astronomical Society (01-03-2013)“…The growth of supermassive black holes appears to be driven by galaxy mergers, violent merger-free processes and/or 'secular' processes. In order to quantify…”
Get full text
Journal Article -
7
A Composite Seyfert 2 X-Ray Spectrum: Implications for the Origin of the Cosmic X-Ray Background
Published in The Astrophysical journal (01-08-2001)Get full text
Journal Article -
8
Transient and Highly Polarized Double-Peaked Hα Emission in the Seyfert 2 Nucleus of NGC 2110
Published in The Astrophysical journal (10-10-2007)Get full text
Journal Article -
9
The Central Engines of 19 LINERs as Viewed by Chandra
Published in The Astrophysical journal (10-08-2006)“…Using archival Chandra observations of 19 LINERs, we explore the X-ray properties of their inner kiloparsec to determine the origin of their nuclear X-ray…”
Get full text
Journal Article -
10
“Hidden” Seyfert 2 Galaxies and the X-Ray Background
Published in The Astrophysical journal (10-11-2002)Get full text
Journal Article -
11
Three LINERs under the Chandra X-Ray Microscope
Published in The Astrophysical journal (20-01-2002)Get full text
Journal Article -
12
Chandra Detection of a Type II Quasar at z = 3.288
Published in The Astrophysical journal (20-03-2002)Get full text
Journal Article -
13
X-Rays from NGC 3256: High-Energy Emission in Starburst Galaxies and Their Contribution to the Cosmic X-Ray Background
Published in The Astrophysical journal (01-12-1999)“…The infrared-luminous galaxy NGC 3256 is a classic example of a merger-induced nuclear starburst system. We find here that it is the most X-ray-luminous…”
Get full text
Journal Article -
14
A Hidden Broad‐Line Region in the Weak Seyfert 2 Galaxy NGC 788
Published in Publications of the Astronomical Society of the Pacific (01-09-1998)“…We have detected a broad Hα emission line in the polarized flux spectrum of the Seyfert 2 galaxy NGC 788, indicating that it contains an obscured Seyfert 1…”
Get full text
Journal Article -
15
Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. III. Optical Variability and X-Ray/UV/Optical Correlations
Published in The Astrophysical journal (10-10-2006)“…We present optical observations of the low-luminosity Seyfert 1 nucleus of NGC 4395, as part of a multiwavelength reverberation-mapping program. Observations…”
Get full text
Journal Article -
16
X-Ray Emission from the Weak-lined T Tauri Binary System KH 15D
Published in The Astrophysical journal (01-09-2005)“…The unique eclipsing, weak-lined T Tauri star KH 15D has been detected as an X-ray source in a 95.7 ks exposure from the Chandra X-Ray Observatory archives. A…”
Get full text
Journal Article -
17
The Hard X-Ray Luminosity of OB Star Populations: Implications for The Contribution of Star Formation to the Cosmic X-Ray Background
Published in The Astrophysical journal (10-06-2001)Get full text
Journal Article -
18
THE DISCOVERY OF THE FIRST "CHANGING LOOK" QUASAR: NEW INSIGHTS INTO THE PHYSICS AND PHENOMENOLOGY OF ACTIVE GALACTIC NUCLEI
Published in The Astrophysical journal (20-02-2015)“…ABSTRACT SDSS J015957.64+003310.5 is an X-ray selected, z = 0.31 active galactic nucleus (AGN) from the Stripe 82X survey that transitioned from a Type 1…”
Get full text
Journal Article -
19
Multiwavelength Monitoring of the Dwarf Seyfert 1 Galaxy NGC 4395. II. X-Ray and Ultraviolet Continuum Variability
Published in The Astrophysical journal (01-07-2006)“…We report on two Chandra observations, and a simultaneous Hubble Space Telescope ultraviolet observation, of the dwarf Seyfert 1 galaxy NGC 4395. Each Chandra…”
Get full text
Journal Article -
20
Radio properties of NLS1s
Published in New astronomy reviews (01-09-2000)“…While NLS1s have been studied intensively at X-ray and optical wavelengths, comparatively little is known about their characteristics in the radio band…”
Get full text
Journal Article