Publication details
The magnetic system SMSS J1606-1000 as a period bouncer
| Authors | |
|---|---|
| Year of publication | 2021 |
| Type | Article in Periodical |
| Magazine / Source | Monthly Notices of the Royal Astronomical Society |
| MU Faculty or unit | |
| Citation | |
| Web | https://academic.oup.com/mnrasl/article-abstract/507/1/L30/6329046 |
| Doi | http://dx.doi.org/10.1093/mnrasl/slab085 |
| Keywords | binaries: spectroscopic; stars: individual: SMSS J1606-1000; stars: magnetic field; white dwarfs |
| Description | 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 ? = 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. |