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Astrophysics > Solar and Stellar Astrophysics

arXiv:1804.09625 (astro-ph)
[Submitted on 25 Apr 2018]

Title:A Gaia DR2 Confirmation that 2MASS J12074836-3900043 is a Member of the TW Hya Association

Authors:Jonathan Gagné, Eileen C. Gonzales, Jacqueline K. Faherty
View a PDF of the paper titled A Gaia DR2 Confirmation that 2MASS J12074836-3900043 is a Member of the TW Hya Association, by Jonathan Gagn\'e and 1 other authors
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Abstract:We use new data from Gaia DR2 to confirm that the young L1 $\gamma$ candidate member of the TW Hya association (TWA) is now a bona fide member with a model-dependent mass estimate of ~15 $M_{Jup}$. The ambiguous M9 $\gamma$ candidate member 2MASS J12474428---3816464 also gets a higher Bayesian membership probability for TWA membership as a result of Gaia DR2 data and a new radial velocity measurement, but it remains unclear whether it is a true member of TWA or if it is an unrelated young interloper, because it is separated by 4.6 km/s from the locus of TWA members in UVW space.
Comments: Submitted to Research Notes of the AAS. 2 pages
Subjects: Solar and Stellar Astrophysics (astro-ph.SR)
Cite as: arXiv:1804.09625 [astro-ph.SR]
  (or arXiv:1804.09625v1 [astro-ph.SR] for this version)
  https://doi.org/10.48550/arXiv.1804.09625
arXiv-issued DOI via DataCite

Submission history

From: Jonathan Gagné [view email]
[v1] Wed, 25 Apr 2018 15:26:44 UTC (51 KB)
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