2020ApJ...892L..35B

Query : 2020ApJ...892L..35B

2020ApJ...892L..35B - Astrophys. J., 892, L35-L35 (2020/April-1)

A 1201 s orbital period detached binary: the first double helium core white dwarf LISA verification binary.

BROWN W.R., KILIC M., BEDARD A., KOSAKOWSKI A. and BERGERON P.

Abstract (from CDS):

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.

Abstract Copyright: © 2020. The American Astronomical Society. All rights reserved.

Journal keyword(s): Compact binary stars - DA stars - DC stars - Gravitational wave sources - Gravitational waves - White dwarf stars - Compact objects - Detached binary stars

VizieR on-line data: <Available at CDS (J/ApJ/892/L35): fig1.dat>

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 SDSS J053332.05+020911.5 WD* 05 33 32.0599243968 +02 09 11.493335628           DBA 21 0
2 GALEX J065133.3+284424 WD* 06 51 33.3404753832 +28 44 23.448959772           DAH 98 0
3 US 738 ** 09 35 06.9270091560 +44 11 06.938394720   17.7   17.8   DA+M 44 0
4 GALEX J153932.1+502738 WD* 15 39 32.1570293712 +50 27 38.767632120           DA 46 0
5 PB 5353 WD* 23 22 30.1904191272 +05 09 42.169061880   18.5       DA+DC 16 0

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