Expanding the Ultracompacts: Gravitational-wave-driven Mass Transfer in the Shortest-period Binaries with Accretion Disks

Expanding the Ultracompacts: Gravitational-wave-driven Mass Transfer in the Shortest-period Binaries with Accretion Disks

We report the discovery of three ultracompact binary white dwarf systems hosting accretion disks, with orbital periods of 7.95, 8.68, and 13.15 minutes. This significantly augments the population of mass-transferring binaries at the shortest periods, and provides the first evidence that accretors in...

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Main Authors: Joheen Chakraborty, Kevin B. Burdge, Saul A. Rappaport, James Munday, Hai-Liang Chen, Pablo Rodríguez-Gil, V. S. Dhillon, Scott A. Hughes, Gijs Nelemans, Erin Kara, Eric C. Bellm, Alex J. Brown, Noel Castro Segura, Tracy X. Chen, Emma Chickles, Martin J. Dyer, Richard Dekany, Andrew J. Drake, James Garbutt, Matthew J. Graham, Matthew J. Green, Dan Jarvis, Mark R. Kennedy, Paul Kerry, S. R. Kulkarni, Stuart P. Littlefair, Ashish A. Mahabal, Frank J. Masci, James McCormac, Steven G. Parsons, Ingrid Pelisoli, Eleanor Pike, Thomas A. Prince, Reed Riddle, Jan van Roestel, Dave Sahman, Avery Wold, Tin Long Sunny Wong
Format: Article
Language:English
Published: IOP Publishing 2024-01-01
Series:The Astrophysical Journal
Subjects:
Compact binary stars
Gravitational wave sources
Stellar accretion disks
White dwarf stars
Online Access:https://doi.org/10.3847/1538-4357/ad9563
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