424 citations · 3.4k across the 66 of their papers we have counts for
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Reframing the Wide Eccentric Binary Problem: Eccentricity as a Probe of Mass-transfer Physics
A. Parkosidis, S. Toonen, E. Laplace +1
Observations of wide post-interaction binaries show an unexpected feature; orbital eccentricity, which is not understood theoretically. A promising resolution to this long-standing…
The Silent Majority: The Interacting Post-Common-Envelope Binaries Underlying Cataclysmic Variables
Yarin Meir Shani, Na'ama Hallakoun, Sagi Ben-Ami +4
We analyze the orbital period distribution of post-common-envelope white-dwarf-main-sequence (WDMS) binaries by cross-matching the new spectroscopic Gaia DR3 WDMS catalog with TESS…
Gaia Barium Dwarfs and Their Ostensibly Ordinary Counterparts
Param Rekhi, Sahar Shahaf, Sagi Ben-Ami +4
The recently identified Gaia population of main-sequence--white dwarf (MS+WD) binaries at separations of , often with moderate eccentricities, is not readily re…
Tertiary Tides with Eccentric Orbits
Yan Gao, Tjarda Boekholt, Devismita Panda +2
Within hierarchical triple stellar systems, there exists a tidal process unique to them, known as tertiary tides. In this process, the tidal deformation of a tertiary in a hierarch…
Eclipsing white dwarf from the Zwicky Transient Facility: II. Seven eclipsing double white dwarfs
J. van Roestel, K. Burdge, I. Caiazzo +15
In a systematic search for eclipsing white dwarfs using Zwicky transient facility (ZTF) data, we found seven eclipsing double white dwarfs with orbital periods ranging from 45 minu…
The role of triple evolution in the formation of LISA double white dwarfs
Abinaya Swaruba Rajamuthukumar, Valeriya Korol, Jakob Stegmann +5
Galactic double white dwarfs will be prominent gravitational-wave sources for the Laser Interferometer Space Antenna (LISA). While previous studies have primarily focused on format…
Massive White Dwarfs in the 100 pc Sample: Magnetism, Rotation, Pulsations, and the Merger Fraction
Gracyn Jewett, Mukremin Kilic, Pierre Bergeron +6
We present a detailed model atmosphere analysis of massive white dwarfs with and K in the Montreal White Dwarf Database 100 pc sample and…
Ba Enrichment in Gaia MS+WD Binaries: Tracing -Process Element Production
Param Rekhi, Sagi Ben-Ami, Na'ama Hallakoun +3
A large population of intermediate-separation binaries, consisting of a main-sequence (MS) star and a white dwarf (WD), has recently emerged from Gaia's third data release (DR3), p…
The DBL Survey I: discovery of 34 double-lined double white dwarf binaries
James Munday, Ingrid Pelisoli, P. E. Tremblay +8
We present the first discoveries of the double-lined double white dwarf (DBL) survey that targets over-luminous sources with respect to the canonical white dwarf cooling sequence a…
The 40 pc sample of white dwarfs from Gaia
Mairi W. O'Brien, P. -E. Tremblay, B. L. Klein +14
We present a comprehensive overview of a volume-complete sample of white dwarfs located within 40 pc of the Sun, a significant proportion of which were detected in Gaia Data Releas…
A Deficit of Massive White Dwarfs in Gaia Astrometric Binaries
Na'ama Hallakoun, Sahar Shahaf, Tsevi Mazeh +2
The third data release of Gaia introduced a large catalog of astrometric binaries, out of which about 3,200 are likely main-sequence stars with a white-dwarf (WD) companion. These…
Triage of the Gaia DR3 astrometric orbits. II. A census of white dwarfs
S. Shahaf, N. Hallakoun, T. Mazeh +4
The third data release of Gaia was the first to include orbital solutions assuming non-single stars. Here, we apply the astrometric triage technique of Shahaf et al. to identify bi…
A massive helium star with a sufficiently strong magnetic field to form a magnetar
T. Shenar, G. A. Wade, P. Marchant +13
Magnetars are highly magnetized neutron stars; their formation mechanism is unknown. Hot helium-rich stars with spectra dominated by emission lines are known as Wolf-Rayet stars. W…
The Merger Fraction of Ultramassive White Dwarfs
Mukremin Kilic, Adam G. Moss, Alekzander Kosakowski +6
We search for merger products among the 25 most massive white dwarfs in the Montreal White Dwarf Database 100 pc sample through follow-up spectroscopy and high-cadence photometry.…
white dwarfs within 40 pc III: spectroscopic observations of new candidates in the southern hemisphere
Mairi W. O'Brien, P. -E. Tremblay, N. P. Gentile Fusillo +31
We present a spectroscopic survey of 248 white dwarf candidates within 40 pc of the Sun; of these 244 are in the southern hemisphere. Observations were performed mostly with the Ve…
Local stellar formation history from the 40 pc white dwarf sample
E. Cukanovaite, P. -E. Tremblay, S. Toonen +4
We derive the local stellar formation history from the Gaia-defined 40 pc white dwarf sample. This is currently the largest volume-complete sample of white dwarfs for which spectro…
Von Zeipel - Lidov - Kozai cycles in action: triples with eclipse depth variations: KICs 6964043, 5653126, 5731312 and 8023317
T. Borkovits, S. A. Rappaport, S. Toonen +3
We report the results of the photodynamical analyses of four compact, tight triple stellar systems, KICs 6964043, 5653126, 5731312, 8023317, based largely on and da…
Importance of stable mass transfer and stellar winds for the formation of gravitational wave sources
Andris Dorozsmai, Silvia Toonen
The large number of gravitational wave (GW) detections have revealed the properties of the merging black hole binary population, but how such systems are formed is still heavily de…
A Triple Star Origin For T Pyx and Other Short-Period Recurrent Novae
C. Knigge, S. Toonen, T. C. N. Boekholt
Recurrent novae are star systems in which a massive white dwarf accretes material at such a high rate that it undergoes thermonuclear runaways every 1 - 100 years. They are the onl…
Stellar Triples as a Source for Ba Stars
Yan Gao, Silvia Toonen, Nathan Leigh
Barium stars have been studied extensively over the past few decades, yet our current understanding of how these intriguing objects formed leaves much to be desired. Many trends ob…
A gap in the double white dwarf separation distribution caused by the common-envelope evolution: astrometric evidence from Gaia
Valeriya Korol, Vasily Belokurov, Silvia Toonen
The trajectory of the center of light of an unresolved binary is different from that of its center of mass. Binary-induced stellar centroid wobbling can therefore be detected as an…
New Clues to the Evolution of Dwarf Carbon Stars From Their Variability and X-ray Emission
Benjamin R. Roulston, Paul J. Green, Rodolfo Montez +6
As main-sequence stars with CO, dwarf carbon (dC) stars are never born alone but inherit carbon-enriched material from a former asymptotic giant branch (AGB) companion. In contr…
Unexpected Short-Period Variability in Dwarf Carbon Stars from the Zwicky Transient Facility
Benjamin R. Roulston, Paul J. Green, Silvia Toonen +1
Dwarf carbon (dC) stars, main sequence stars showing carbon molecular bands, are enriched by mass transfer from a previous asymptotic-giant-branch (AGB) companion, which has since…
Thermonuclear explosion of a massive hybrid HeCO white-dwarf triggered by a He-detonation on a companion
Ruediger Pakmor, Yossef Zenati, Hagai B. Perets +1
Normal type Ia supernovae (SNe) are thought to arise from the thermonuclear explosion of massive ( M) carbon-oxygen white dwarfs (WDs), although the exact mechanism i…