65 citations · 358 across the 20 of their papers we have counts for
20 papers
A High Resolution Search for Dual AGN Candidates in Mergers: A Pre-Selection Strategy using Keck AO
Camilo Vazquez, S. Satyapal, G. Canalizo +20
Accreting supermassive black holes (SMBHs) in galaxy mergers with separations 1 kpc are crucial to our understanding of SMBH growth, galaxy evolution, and SMBH binary evolution…
An Increase in the Prevalence of Ionized Outflows in Galaxies with Coronal Line Emission: Feedback in Action?
William Matzko, Shobita Satyapal, Michael Reefe +3
Coronal lines (CLs), which arise from collisionally excited forbidden transitions from highly ionized species, are a powerful diagnostic tool in uncovering active galactic nuclei (…
The CLASS Quasar Catalog: Coronal Line Activity in Type 1 SDSS Quasars
Sara Doan, Shobita Satyapal, Michael Reefe +7
We conduct the first systematic survey of a total of eleven optical coronal lines in the spectra of a large sample of low redshift (z < 0.8) Type 1 quasars observed by the Sloan Di…
What Does the Virial Coefficient of the \Hb Broad-Line Region Depend On?
Lizvette Villafaña, Peter R. Williams, Tommaso Treu +37
We combine our dynamical modeling black hole mass measurements from the Lick AGN Monitoring Project 2016 sample with measured cross-correlation time lags and line widths to recover…
A Comparison of Outflow Properties in AGN Dwarfs vs. Star Forming Dwarfs
Archana Aravindan, Weizhe Liu, Gabriela Canalizo +5
Feedback likely plays a crucial role in resolving discrepancies between observed and theoretical predictions of dwarf galaxy properties. Stellar feedback was once believed to be su…
The Messy Nature of Fiber Spectra: Star-Quasar Pairs Masquerading as Dual Type 1 AGNs
Ryan W. Pfeifle, Barry Rothberg, Kimberly A. Weaver +5
Theoretical studies predict that the most significant growth of supermassive black holes occurs in late-stage mergers, coinciding with the manifestation of dual active galactic nuc…
CLASS Survey Description: Coronal Line Needles in the SDSS Haystack
Michael Reefe, Remington O. Sexton, Sara M. Doan +3
Coronal lines are a powerful, yet poorly understood, tool to identify and characterize Active Galactic Nuclei (AGNs). There have been few large scale surveys of coronal lines in th…
Nuclear Activity in the Low Metallicity Dwarf Galaxy SDSS J0944-0038: A Glimpse into the Primordial Universe
Michael Reefe, Shobita Satyapal, Remington O. Sexton +11
Local low metallicity dwarf galaxies are relics of the early universe and hold clues into the origins of supermassive black holes (SMBHs). In recent work, coronal lines have been u…
CLASS: Coronal Line Activity Spectroscopic Survey
Michael Reefe, Shobita Satyapal, Remington O. Sexton +3
We conduct the first systematic survey of a comprehensive set of the twenty optical coronal lines in the spectra of nearly 1 million galaxies observed by the Sloan Digital Sky Surv…
Galaxy Pairs in the Sloan Digital Sky Survey XV: Properties of Ionised Outflows
William Matzko, Shobita Satyapal, Sara L. Ellison +6
Powerful outflows are thought to play a critical role in galaxy evolution and black hole growth. We present the first large-scale systematic study of ionised outflows in paired gal…
The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-Resolved H\b{eta} Lags in Luminous Seyfert Galaxies
Lizvette Villafaña, Peter R. Williams, Tommaso Treu +62
We have modeled the velocity-resolved reverberation response of the H\b{eta} broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitioring…
The U.S. Naval Observatory VLBI Spectroscopic Catalog
Remington O. Sexton, Nathan J. Secrest, Megan C. Johnson +1
Despite their importance for astrometry and navigation, the active galactic nuclei (AGNs) that comprise the International Celestial Reference Frame (ICRF) are relatively poorly und…
The Lick AGN Monitoring Project 2016: Velocity-Resolved Hβ Lags in Luminous Seyfert Galaxies
Vivian U, Aaron J. Barth, H. Alexander Vogler +61
We carried out spectroscopic monitoring of 21 low-redshift Seyfert 1 galaxies using the Kast double spectrograph on the 3-m Shane telescope at Lick Observatory from April 2016 to M…
Relics of Supermassive Black Hole Seeds: The Discovery of an Accreting Black Hole in an Optically Normal, Low Metallicity Dwarf Galaxy
Jenna M. Cann, Shobita Satyapal, Barry Rothberg +11
The detection and characterization of supermassive black holes (SMBHs) in local low mass galaxies is crucial to our understanding of the origins of SMBHs. This statement assumes th…
Bayesian AGN Decomposition Analysis for SDSS Spectra: A Correlation Analysis of [OIII] Outflow Kinematics with AGN and Host Galaxy Properties
Remington O. Sexton, William Matzko, Nicholas Darden +2
We present Bayesian AGN Decomposition Analysis for SDSS Spectra (BADASS), an open source spectral analysis code designed for automatic detailed deconvolution of AGN and host galaxy…
Multi-wavelength observations of SDSS J105621.45+313822.1, a broad-line, low-metallicity AGN
Jenna M. Cann, Shobita Satyapal, Thomas Bohn +8
In contrast to massive galaxies with Solar or super-Solar gas phase metallicities, very few Active Galactic Nuclei (AGN) are found in low-metallicity dwarf galaxies. Such a populat…
A Triple AGN in a Mid-Infrared Selected Late Stage Galaxy Merger
Ryan W. Pfeifle, Shobita Satyapal, Christina Manzano-King +11
The co-evolution of galaxies and the supermassive black holes (SMBHs) at their centers via hierarchical galaxy mergers is a key prediction of CDM cosmology. As gas and dust are…
Stronger Constraints on the Evolution of the Relation up to
Remington O. Sexton, Gabriela Canalizo, Kyle D. Hiner +4
We revisit the possibility of redshift evolution in the relation with a sample of 22 Seyfert 1 galaxies with black holes (BHs) in the mass range $10^{6.3}-10^{8.3…
Discovery and Follow-up Observations of the Young Type Ia Supernova 2016coj
WeiKang Zheng, Alexei V. Filippenko, Jon Mauerhan +39
The Type~Ia supernova (SN~Ia) 2016coj in NGC 4125 (redshift ) was discovered by the Lick Observatory Supernova Search 4.9 days after the fitted first-light time (FFLT;…
Extended Red Objects and Stellar Wind Bow Shocks in the Carina Nebula
Remington O. Sexton, Matthew S. Povich, Nathan Smith +3
We report the results of infrared photometry on 39 extended red objects (EROs) in the Carina Nebula, observed with the Spitzer Space Telescope. Most EROs are identified by bright,…