2021RNAAS...5...76J

Query : 2021RNAAS...5...76J

2021RNAAS...5...76J - Research Notes of the AAS, 5, 76 (2021/April-0)

Identification of a Low-mass Companion to the White Dwarf SDSS J131730.84+483332.7.

JALOWICZOR P.A., CASEWELL S., SCHNEIDER A.C., GAGNE J., FAHERTY J.K., KUCHNER M.J., MEISNER A.M. and BURGASSER A.J.

Abstract (from CDS):

We present the discovery of 2MASS J13173072+4833343, a low-mass stellar companion to the ∼5.5 Gyr old white dwarf SDSS J131730.85+483332.8. This companion was discovered through the Backyard Worlds: Planet 9 citizen science collaboration. We obtained a near-infrared spectrum of the companion and determined a spectral type of M8.5. Using the cooling age of the white dwarf, we determined that the stellar companion has a mass of ${0.077}_{-0.017}^{+0.005}$M☉, or ${80.2}_{-1.8}^{+0.5}$MJup, near the substellar boundary.

Abstract Copyright: © 2021. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Substellar companion stars - Binary stars

Simbad objects: 3

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Number of rows : 3
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 2MASS J13173072+4833343 PM* 13 17 30.6935262744 +48 33 34.288455708           M8.5 4 0
2 GALEX J131730.9+483334 WD* 13 17 30.8608336320 +48 33 33.051133404           DA 16 0
3 HD 116405 * 13 22 45.1228533984 +44 42 53.894434752   8.27 8.34     A0V 51 0

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