Teegarden's star

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Teegarden's star

Post by Lazarus on 30th March 2014, 8:12 am

Was wondering where SIMBAD was getting its reference to Teegarden's star being a brown dwarf.
Appears to be the following:

Gagné et al. (2014) "BANYAN. II. Very Low Mass and Substellar Candidate Members to Nearby, Young Kinematic Groups with Previously Known Signs of Youth"
http://adsabs.harvard.edu/abs/2014ApJ...783..121G

Uses the 2MASS identification of this object 2MASS J02530084+1652532:
2MASS J02530084+1652532 is an M7 dwarf for which models fitting suggest a marginally low log g ~ 4.5 (Witte et al. 2011). Without making any assumption on its age, we find that this object is a 13 – 15 MJup BD candidate member to ARG with PHk = 25.5% and CHk = 29.7%. A measurement of its radial velocity and distance, as well as a thorough analysis of its spectral properties would be needed to confirm this.
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Re: Teegarden's star

Post by Edasich on 31st March 2014, 12:35 pm

According to Barnes et al. (2012) that nearby star could host a close-in Neptune-mass planet within the Habitable Zone too.
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