2026AJ....171..171J

Query : 2026AJ....171..171J

2026AJ....171..171J - Astron. J., 171, 171 (2026/March-0)

Spectroscopic Characterization of WD J000801.25-350450 and Its Two Comoving Companions.

JALOWICZOR P.A., BICKLE T.P., KIRKPATRICK J.D., CASEWELL S.L., GENTILE FUSILLO N., SCHNEIDER A.C., GAGNE J., FAHERTY J.K., MEISNER A.M., KUCHNER M.J., BURGASSER A.J., ROTHERMICH A., BRAVO A., HYOGO M., POPINCHALK M., BROWN A.J., REBASSA-MANSERGAS A., MURILLO-OJEDA R. (The Backyard Worlds: Planet 9 Collaboration)

Abstract (from CDS):

We present new spectroscopic data for Gaia DR3 2309499817384726016 (WD 0008-350A) and its two wide, comoving, low-mass companions. We confirm the white dwarf is a hydrogen rich DA, with Teff = 6200 ± 90 K and a mass of 0.63 ± 0.03 M⊙, close to that of the average white dwarf. Near-infrared spectra of the two stellar companions to WD 0008-350A reveal that the inner companion is an M dwarf, exhibiting a spectral type of M8. Furthermore, the outer companion is identified as a possible M6 + M9 binary. This paper examines the evidence which suggests the system may be quadruple.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): M dwarf stars - DA stars - Multiple stars

Simbad objects: 7

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Number of rows : 7
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 HD 225200 * 00 04 20.3171235888 -29 16 07.760291052   6.40 6.39     A1V 77 0
2 2MASS J00075936-3505222 LM* 00 07 59.3783341536 -35 05 22.181413020           ~ 4 0
3 2MASS J00080117-3504502 PM* 00 08 01.1786781164 -35 04 50.121730970           ~ 3 0
4 GALEX J000801.3-350447 WD* 00 08 01.2592078344 -35 04 49.630535616           DA 7 0
5 LP 469-206 PM* 02 16 29.8513937296 +13 35 12.783947560   17.77   15.635   M5.0Ve 72 0
6 LP 271-25 LM* 14 28 43.2275214164 +33 10 39.259309081   21.2   17.8   M9Ve 262 0
7 VB 10 PM* 19 16 57.6109547886 +05 09 01.600923413     17.30     M8V 499 1

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