Search Results - "Pogge, R. W."
-
1
Strong Evidence against a Non-degenerate Companion in SN 2012cg
Published in The Astrophysical journal (01-03-2018)“…Even though SN 2012cg is one of the best-studied Type Ia supernovae to date, the nature of its progenitor system has been debated in numerous studies…”
Get full text
Journal Article -
2
Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei. II. A Homogeneous Analysis of a Large Reverberation-Mapping Database
Published in The Astrophysical journal (01-10-2004)“…We present improved black hole masses for 35 active galactic nuclei (AGNs) based on a complete and consistent reanalysis of broad emission-line…”
Get full text
Journal Article -
3
The Changing-look Quasar Mrk 590 Is Awakening
Published in The Astrophysical journal (20-10-2018)“…Mrk 590 was originally classified as a Seyfert 1 galaxy, but then it underwent dramatic changes: the nuclear luminosity dropped by over two orders of magnitude…”
Get full text
Journal Article -
4
THE UNUSUAL TEMPORAL AND SPECTRAL EVOLUTION OF SN2011ht. II. PECULIAR TYPE IIn OR IMPOSTOR?
Published in The Astrophysical journal (20-11-2012)“…SN2011ht has been described both as a true supernova (SN) and as an impostor. In this paper, we conclude that it does not match some basic expectations for a…”
Get full text
Journal Article -
5
Optical observations of the luminous Type IIn Supernova 2010jl for over 900 d
Published in Monthly notices of the Royal Astronomical Society (01-03-2016)“…The luminous Type IIn Supernova (SN) 2010jl shows strong evidence for the interaction of the SN ejecta with dense circumstellar material (CSM). We present…”
Get full text
Journal Article -
6
C IV LINE-WIDTH ANOMALIES: THE PERILS OF LOW SIGNAL-TO-NOISE SPECTRA
Published in The Astrophysical journal (20-09-2013)“…Comparison of six high-redshift quasar spectra obtained with the Large Binocular Telescope with previous observations from the Sloan Digital Sky Survey shows…”
Get full text
Journal Article -
7
OGLE-2003-BLG-262: Finite-Source Effects from a Point-Mass Lens
Published in The Astrophysical journal (01-03-2004)“…We analyze OGLE-2003-BLG-262, a relatively short (t sub(E) = 12.5 plus or minus 0.1 day) microlensing event generated by a point-mass lens transiting the face…”
Get full text
Journal Article -
8
Space Telescope and Optical Reverberation Mapping Project. XI. Disk-wind Characteristics and Contributions to the Very Broad Emission Lines of NGC 5548
Published in The Astrophysical journal (01-08-2020)“…In 2014 the NGC 5548 Space Telescope and Optical Reverberation Mapping campaign discovered a two-month anomaly when variations in the absorption and emission…”
Get full text
Journal Article -
9
PROBING THE LOW-REDSHIFT STAR FORMATION RATE AS A FUNCTION OF METALLICITY THROUGH THE LOCAL ENVIRONMENTS OF TYPE II SUPERNOVAE
Published in The Astrophysical journal (10-08-2013)“…Type II supernovae (SNe) can be used as a star formation tracer to probe the metallicity distribution of global low-redshift star formation. We present oxygen…”
Get full text
Journal Article -
10
Planetary Detection Efficiency of the Magnification 3000 Microlensing Event OGLE-2004-BLG-343
Published in The Astrophysical journal (10-05-2006)“…OGLE-2004-BLG-343 was a microlensing event with peak magnification A sub(max) = 3000 c 1100, by far the highest magnification event ever analyzed and hence…”
Get full text
Journal Article -
11
THE UNUSUAL TEMPORAL AND SPECTRAL EVOLUTION OF THE TYPE IIn SUPERNOVA 2011ht
Published in The Astrophysical journal (01-06-2012)“…We present very early UV to optical photometric and spectroscopic observations of the peculiar Type IIn supernova (SN) 2011ht in UGC 5460. The UV observations…”
Get full text
Journal Article -
12
The Mass of the Black Hole in the Quasar PG 2130+099
Published in The Astrophysical journal (01-12-2008)“…We present the results of a recent reverberation-mapping campaign undertaken to improve measurements of the radius of the broad-line region and the central…”
Get full text
Journal Article -
13
Thirty Years of Continuum and Emission-Line Variability in NGC 5548
Published in The Astrophysical journal (20-10-2007)“…We analyze a total of 827 optical spectra of NGC 5548 obtained over the 30 year period 1972-2001 for the purpose of studying the long-term behavior of the…”
Get full text
Journal Article -
14
X-Ray and Optical Variability in NGC 4051 and the Nature of Narrow-Line Seyfert 1 Galaxies
Published in The Astrophysical journal (10-10-2000)Get full text
Journal Article -
15
THE TYPECASTING OF ACTIVE GALACTIC NUCLEI: Mrk 590 NO LONGER FITS THE ROLE
Published in The Astrophysical journal (01-12-2014)“…We present multi wavelength observations that trace more than 40 yr in the life of the active galactic nucleus (AGN) in Mrk 590, traditionally known as a…”
Get full text
Journal Article -
16
STELLAR VELOCITY DISPERSION MEASUREMENTS IN HIGH-LUMINOSITY QUASAR HOSTS AND IMPLICATIONS FOR THE AGN BLACK HOLE MASS SCALE
Published in The Astrophysical journal (20-08-2013)“…We present new stellar velocity dispersion measurements for four luminous quasars with the Near-Infrared Integral Field Spectrometer instrument and the ALTAIR…”
Get full text
Journal Article -
17
A Revised Broad-line Region Radius and Black Hole Mass for the Narrow-line Seyfert 1 NGC 4051
Published in The Astrophysical journal (10-09-2009)“…We present the first results from a high sampling rate, multimonth reverberation mapping campaign undertaken primarily at MDM Observatory with supporting…”
Get full text
Journal Article -
18
Microlensing Constraints on the Frequency of Jupiter-Mass Companions: Analysis of 5 Years of PLANET Photometry
Published in The Astrophysical journal (10-02-2002)“…We analyze 5 years of PLANET photometry of microlensing events toward the Galactic bulge to search for the short-duration deviations from single-lens light…”
Get full text
Journal Article -
19
THE SIZE OF THE NARROW-LINE-EMITTING REGION IN THE SEYFERT 1 GALAXY NGC 5548 FROM EMISSION-LINE VARIABILITY
Published in The Astrophysical journal (20-12-2013)“…The narrow [OIII] [lambda][lambda]4959, 5007 emission-line fluxes in the spectrum of the well-studied Seyfert 1 galaxy NGC 5548 are shown to vary with time…”
Get full text
Journal Article -
20
The Cepheid Distance to the Seyfert 1 Galaxy NGC 4151
Published in The Astrophysical journal (01-10-2020)“…Abstract We derive a distance of 15.8 ± 0.4 Mpc to the archetypal Seyfert 1 galaxy NGC 4151 based on the near-infrared Cepheid period–luminosity relation and…”
Get full text
Journal Article