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The Weighing Halos Accurately, Locally, and Efficiently with Supernovae (WHALES) Survey Overview and Initial Data Release
Maria Acevedo, Daniel Scolnic, Bastien Carreres +6
We present an overview of the Weighing Halos Accurately, Locally, and Efficiently with Supernovae (WHALES) survey, the first to discover and measure Type Ia supernovae (SNe Ia) in…
The accretion of a solar mass per day by a 17-billion solar mass black hole
Christian Wolf, Samuel Lai, Christopher A. Onken +5
Around a million quasars have been catalogued in the Universe by probing deeper and using new methods for discovery. However, the hardest ones to find seem to be the rarest and bri…
SkyMapper Southern Survey: Data Release 4
Christopher A. Onken, Christian Wolf, Michael S. Bessell +5
We present the fourth data release (DR4) of the SkyMapper Southern Survey (SMSS), the last major step in our hemispheric survey with six optical filters: u, v, g, r, i, z. SMSS DR4…
Ultra-luminous high-redshift quasars from SkyMapper -- II. New quasars and the bright end of the luminosity function
Christopher A. Onken, Christian Wolf, Fuyan Bian +5
We search for ultra-luminous Quasi-Stellar Objects (QSOs) at high redshift using photometry from the SkyMapper Southern Survey Data Release 3 (DR3), in combination with 2MASS, VHS…
The Magellanic Quasars Survey. III. Spectroscopic Confirmation of 758 AGNs Behind the Magellanic Clouds
Szymon Kozlowski, Christopher A. Onken, Christopher S. Kochanek +12
The Magellanic Quasars Survey (MQS) has now increased the number of quasars known behind the Magellanic Clouds by almost an order of magnitude. All survey fields in the Large Magel…
On the significance of the excess number of strong MgII absorbers observed towards Gamma-ray bursts
Sharon Rapoport, Christopher A. Onken, J. Stuart B. Wyithe +2
The number of strong (equivalent width > 1A) MgII absorbers observed towards Gamma-ray bursts (GRBs) has been found to be statistically larger than the number of strong absorbers t…
Testing the gravitational lensing explanation for the MgII problem in GRBs
Sharon Rapoport, Christopher A. Onken, Brian P. Schmidt +3
Sixty percent of gamma-ray bursts (GRBs) reveal strong MgII absorbing systems, which is a factor of ~2 times the rate seen along lines-of-sight to quasars. The discrepancy in the c…
An expanded M_bh-sigma diagram, and a new calibration of active galactic nuclei masses
Alister W. Graham, Christopher A. Onken, E. Athanassoula +1
[Abridged] We present an updated and improved M_bh-sigma diagram containing 64 galaxies for which M_bh measurements (not just upper limits) are available. Due to new and increased…
Reverberation Mapping Measurements of Black Hole Masses in Six Local Seyfert Galaxies
K. D. Denney, B. M. Peterson, R. W. Pogge +40
We present the final results from a high sampling rate, multi-month, spectrophotometric reverberation mapping campaign undertaken to obtain either new or improved Hbeta reverberati…
Reverberation Mapping Results from MDM Observatory
Kelly D. Denney, B. M. Peterson, R. W. Pogge +6
We present results from a multi-month reverberation mapping campaign undertaken primarily at MDM Observatory with supporting observations from around the world. We measure broad li…
Diverse Broad Line Region Kinematic Signatures From Reverberation Mapping
K. D. Denney, B. M. Peterson, R. W. Pogge +40
A detailed analysis of the data from a high sampling rate, multi-month reverberation mapping campaign, undertaken primarily at MDM Observatory with supporting observations from tel…
Testing Radiation Pressure Corrections to Reverberation Mapping Masses
Christopher A. Onken
This paper has been withdrawn by the author. The velocity structure of the broad-line region is reflective of the radiation pressure over much longer timescales than are probed by…