A 1201 s Orbital Period Detached Binary: The First Double Helium Core White Dwarf LISA Verification Binary

Brown, Warren R. and Kilic, Mukremin and Bédard, A. and Kosakowski, Alekzander and Bergeron, P. (2020) A 1201 s Orbital Period Detached Binary: The First Double Helium Core White Dwarf LISA Verification Binary. The Astrophysical Journal, 892 (2). L35. ISSN 2041-8213

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Official URL: https://doi.org/10.3847/2041-8213/ab8228

Abstract

We report the discovery of a 1201 s orbital period binary, the third shortest-period detached binary known. Sloan Digital Sky Survey J232230.20 + 050942.06 contains two He-core white dwarfs orbiting with a 27° inclination. Located 0.76 kpc from the Sun, the binary has an estimated Laser Interferometer Space Antenna (LISA) 4 yr signal-to-noise ratio of 40. J2322 + 0509 is the first He + He white dwarf LISA verification binary, a source class that is predicted to account for one-third of resolved LISA ultra-compact binary detections.

Item Type:	Article
Subjects:	AP Academic Press > Physics and Astronomy
Depositing User:	Unnamed user with email support@apacademicpress.com
Date Deposited:	25 May 2023 06:23
Last Modified:	21 Sep 2024 03:54
URI:	http://info.openarchivespress.com/id/eprint/1369

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