16 citations · 38 across the 11 of their papers we have counts for
11 papers
Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory
Courtney D. Dressing, Danica Adams, Evelyne Alecian +324
The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…
HST Deep Upper Limits Rule Out a Surviving Massive Binary Companion to the Type Ic Supernova 2012fh
Benjamin F. Williams, Emmanouil Zapartas, Ori D. Fox +19
Current explanations of the mass-loss mechanism for stripped-envelope supernovae remain divided between single and binary progenitor systems. Here we obtain deep ultraviolet (UV) i…
The Mass of the Vela Pulsar Progenitor and the Age of the Vela-Puppis Complex
Jeremiah W. Murphy, Andres F. Barrientos, Rene Andrae +4
The association of the Vela Pulsar with the Vela Supernova Remnant has long supported the hypothesis that core-collapse supernovae yield neutron stars, but its surrounding stellar…
Investigating Ionization in the Intergalactic Medium
Brad Koplitz, Anjali Ramesh, Sanchayeeta Borthakur
The Intergalactic Medium (IGM) contains 50% of the baryonic mass of the Universe, yet the mechanisms responsible for keeping the IGM ionized has not been fully explained. Hence,…
Considering the Single and Binary Origins of the Type IIP SN 2017eaw
K. Azalee Bostroem, Emmanouil Zapartas, Brad Koplitz +3
Current population synthesis modeling suggests that 30-50% of Type II supernovae originate from binary progenitors, however, the identification of a binary progenitor is challengin…
Constraining Circumgalactic Turbulence with QSO Absorption-line Measurements
Brad Koplitz, Edward Buie, Evan Scannapieco
Our knowledge of the circumgalactic medium (CGM) is mostly based on quasar absorption-line measurements. These have uncovered a multiphase medium that is likely highly turbulent, b…
Spatially-Resolved Recent Star Formation History in NGC 6946
Debby Tran, Benjamin Williams, Emily Levesque +6
The nearby face-on star forming spiral galaxy NGC 6946 is known as the Fireworks Galaxy due to its hosting an unusually large number of supernova. We analyze its resolved near-ultr…
The Masses of Supernova Remnant Progenitors in M33
Brad Koplitz, Jared Johnson, Benjamin F. Williams +7
Using resolved optical stellar photometry from the Panchromatic Hubble Andromeda Treasury Triangulum Extended Region (PHATTER) survey, we measured the star formation history (SFH)…
A Multiwavelength Classification and Study of Red Supergiant Candidates in NGC 6946
Jared R. Johnson, Brad Koplitz, Benjamin F. Williams +3
We have combined resolved stellar photometry from Hubble Space Telescope (\emph{HST}), \emph{Spitzer}, and \emph{Gaia} to identify red supergiant (RSG) candidates in NGC~6946, base…
Cataclysmic Variables in the Second Year of the Zwicky Transient Facility
Paula Szkody, Clair Olde Loohuis, Brad Koplitz +17
Using a filter in the GROWTH Marshal based on color and the amplitude and the timescale of variability, we have identified 372 objects as known or candidate cataclysmic variables (…
The Masses of Supernova Remnant Progenitors in NGC 6946
Brad Koplitz, Jared Johnson, Benjamin F. Williams +5
We constrained the progenitor masses for 169 supernova remnants, 8 historically observed supernovae, and the black hole formation candidate in NGC 6946, finding that they are consi…