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60 Microlensing Events from the Three Years of Zwicky Transient Facility Phase One
Michael S. Medford, Natasha S. Abrams, Jessica R. Lu +2
Microlensing events have historically been discovered throughout the Galactic bulge and plane by surveys designed solely for that purpose. We conduct the first multi-year search fo…
Variability-selected intermediate mass black hole candidates in dwarf galaxies from ZTF and WISE
Charlotte Ward, Suvi Gezari, Peter Nugent +9
While it is difficult to observe the first black hole seeds in the early Universe, we can study intermediate mass black holes (IMBHs) in local dwarf galaxies for clues about their…
Near-IR Type Ia SN distances: host galaxy extinction and mass-step corrections revisited
J. Johansson, S. B. Cenko, O. D. Fox +17
We present optical and near-infrared (NIR, -band) observations of 42 Type Ia supernovae (SNe Ia) discovered by the untargeted intermediate Palomar Transient Factory (iPTF) sur…
AGN on the move: A search for off-nuclear AGN from recoiling SMBHs and ongoing galaxy mergers with the Zwicky Transient Facility
Charlotte Ward, Suvi Gezari, Sara Frederick +16
A supermassive black hole (SMBH) ejected from the potential well of its host galaxy via gravitational wave recoil carries important information about the mass ratio and spin alignm…
The Palomar Transient Factory Core-Collapse Supernova Host-Galaxy Sample. I. Host-Galaxy Distribution Functions and Environment-Dependence of CCSNe
Steve Schulze, Ofer Yaron, Jesper Sollerman +51
Several thousand core-collapse supernovae (CCSNe) of different flavors have been discovered so far. However, identifying their progenitors has remained an outstanding open question…
Spectroscopy of the first resolved strongly lensed Type Ia supernova iPTF16geu
J. Johansson, A. Goobar, S. H. Price +14
We report the results from spectroscopic observations of the multiple images of the strongly lensed Type Ia supernova (SN Ia), iPTF16geu, obtained with ground based telescopes and…