92 citations · 361 across the 13 of their papers we have counts for
15 papers
V407 Vul: a triple star system with an AM CVn detectable by gravitational wave observatories
James Munday, Antonio C. Rodriguez, Nicole Reindl +23
The AM CVn class includes mass transferring, ultra-compact double white dwarf binaries with orbital periods on the timescale of minutes. A long-standing puzzle is that none of the…
A Catalogue of Ultracompact Mass-Transferring White Dwarf Binaries
Matthew J. Green, Jan van Roestel, Tin Long Sunny Wong
We present an overview and catalogue of all known mass-transferring binary systems that have white dwarf accretors and orbital periods shorter than 70 minutes, including the AM CVn…
A gravitational wave detectable candidate Type Ia supernova progenitor
Emma T. Chickles, Kevin B. Burdge, Joheen Chakraborty +37
Type Ia supernovae, critical for studying cosmic expansion, arise from thermonuclear explosions of white dwarfs, but their precise progenitor pathways remain unclear. Growing evide…
An upper limit on the frequency of short-period black hole companions to Sun-like stars
Matthew J. Green, Yoav Ziv, Hans-Walter Rix +9
Stellar-mass black holes descend from high-mass stars, most of which had stellar binary companions. However, the number of those binary systems that survive the binary evolution an…
A rotating white dwarf shows different compositions on its opposite faces
Ilaria Caiazzo, Kevin B. Burdge, Pier-Emmanuel Tremblay +35
White dwarfs, the extremely dense remnants left behind by most stars after their death, are characterised by a mass comparable to that of the Sun compressed into the size of an Ear…
15000 Ellipsoidal Binary Candidates in TESS: Orbital Periods, Binary Fraction, and Tertiary Companions
Matthew J. Green, Dan Maoz, Tsevi Mazeh +5
We present a homogeneously-selected sample of 15779 candidate binary systems with main sequence primary stars and orbital periods shorter than 5 days. The targets were selected fro…
Probable Dormant Neutron Star in a Short-Period Binary System
Tsevi Mazeh, Simchon Faigler, Dolev Bashi +24
We have identified 2XMM J125556.57+565846.4, at a distance of 600 pc, as a binary system consisting of a normal star and a probable dormant neutron star. Optical spectra exhibit a…
WDPhotTools -- A White Dwarf Photometric Toolkit in Python
M. C. Lam, K. W. Yuen, M. J. Green +1
From data collection to photometric fitting and analysis of white dwarfs to generating a white dwarf luminosity function requires numerous Astrophysical, Mathematical and Computati…
Discovery of a double detonation thermonuclear supernova progenitor
Thomas Kupfer, Evan B. Bauer, Jan van Roestel +12
We present the discovery of a new double detonation progenitor system consisting of a hot subdwarf B (sdB) binary with a white dwarf companion with an P=76.34179(2) min orbital per…
A systematic search for outbursting AM CVn systems with the Zwicky Transient Facility
Jan van Roestel, Leah Creter, Thomas Kupfer +15
AM CVn systems are a rare type of accreting binary that consists of a white dwarf and a helium-rich, degenerate donor star. Using the Zwicky Transient Facility (ZTF), we searched f…
Spectroscopic and Photometric Periods of Six Ultracompact Accreting Binaries
Matthew J. Green, Thomas R. Marsh, Philip J. Carter +19
Ultracompact accreting binary systems each consist of a stellar remnant accreting helium-enriched material from a compact donor star. Such binaries include two related sub-classes,…
A pulsating white dwarf in an eclipsing binary
Steven G. Parsons, Alexander J. Brown, Stuart P. Littlefair +8
White dwarfs are the burnt out cores of Sun-like stars and are the final fate of 97% of all stars in our Galaxy. The internal structure and composition of white dwarfs are hidden b…
Astro2020 Science White Paper: Understanding the evolution of close white dwarf binaries
Odette Toloza, Elme Breed, Domitilla De Martino +27
Interacting binaries containing white dwarfs can lead to a variety of outcomes that range from powerful thermonuclear explosions, which are important in the chemical evolution of g…
A search for optical bursts from the repeating fast radio burst FRB 121102
Liam K Hardy, Vik S Dhillon, Laura G Spitler +14
We present a search for optical bursts from the repeating fast radio burst FRB 121102 using simultaneous observations with the high-speed optical camera ULTRASPEC on the 2.4-m Thai…
PTF1 J082340.04+081936.5: A hot subdwarf B star with a low mass white dwarf companion in an 87 minute orbit
Thomas Kupfer, Jan van Roestel, Jared Brooks +19
We present the discovery of the hot subdwarf B star (sdB) binary PTF1 J082340.04+081936.5. The system has an orbital period P min (0.060761584(10) days), ma…