SIMBAD references

2018ApJ...852...55D - Astrophys. J., 852, 55-55 (2018/January-1)

Banyan. X. Discovery of a wide, low-gravity L-type companion to a fast-rotating M3 dwarf.

DESROCHERS M.-E., ARTIGAU E., GAGNE J., DOYON R., MALO L., FAHERTY J.K. and LAFRENIERE D.

Abstract (from CDS):

We report the discovery of a substellar-mass co-moving companion to 2MASS J22501512+2325342, an M3 candidate member of the young (130-200 Myr) AB Doradus Moving Group (ABDMG). This L3 β companion was discovered in a 2MASS search for companions at separations of 3''-18'' from a list of 2812 stars suspected to be young (≲500 Myr) in the literature, and was confirmed with follow-up astrometry and spectroscopy. Evolutionary models yield a companion mass of 30–4+11MJup at the age of ABDMG. The 2MASS J22501512+2325342 AB system appears to be a spatial outlier to the bulk of ABDMG members, similarly to the young 2MASS J22362452+4751425 AB system. Future searches for young objects around these two systems would make it possible to determine whether they are part of a spatial extension of the known ABDMG distribution.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: spectroscopic - brown dwarfs - stars: late-type - stars: low-mass - stars: low-mass

Simbad objects: 37

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2019.12.06-06:36:02

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