In:
Monthly Notices of the Royal Astronomical Society: Letters, Oxford University Press (OUP), Vol. 507, No. 1 ( 2021-08-20), p. L30-L35
Abstract:
We report the discovery of a rare close binary system, SMSS J160639.78−100010.7, comprising a magnetic white dwarf with a field of about 30 MG and a brown dwarf. We measured an orbital period of 92 min which is consistent with the photometric period. Minimum and maximum light occur at the orbital quadratures Φ = 0.25 and 0.75, respectively, and cannot be caused by reflection on the brown dwarf, but, instead, by a spot on the synchronously rotating magnetic white dwarf. The brown dwarf does not fill its Roche lobe and the system may be in a low-accretion state or, more likely, in a detached state following episodes of mass transfer. SMSS J160639.78−100010.7 is the nearest known magnetic white dwarf plus brown dwarf system.
Type of Medium:
Online Resource
ISSN:
1745-3925
,
1745-3933
DOI:
10.1093/mnrasl/slab085
Language:
English
Publisher:
Oxford University Press (OUP)
Publication Date:
2021
detail.hit.zdb_id:
2190759-6
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