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Pleiades or Not? Resolving the Status of the Lithium-rich M Dwarfs HHJ 339 and HHJ 430

Abstract:

Oppenheimer et al. discovered two M5 dwarfs in the Pleiades with nearly primordial lithium. These stars are not low enough in mass to represent the leading edge of the lithium depletion boundary at Pleiades age (~125 Myr). A possible explanation for the enhanced lithium in these stars is that they are actually not members of the Pleiades but instead are members of a younger moving group seen in projection toward the Pleiades. We have used data from Gaia DR2 to confirm that these two stars, HH...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.3847/1538-3881/ab93c9

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ORCID:
0000-0003-3595-7382
Barrado, D More by this author
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ORCID:
0000-0001-6534-6246
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ORCID:
0000-0001-6381-515X
Hillenbrand, LA More by this author
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Publisher:
American Astronomical Society Publisher's website
Journal:
Astronomical Journal Journal website
Volume:
160
Issue:
1
Article number:
30
Publication date:
2020-06-18
Acceptance date:
2020-05-14
DOI:
EISSN:
1538-3881
ISSN:
0004-6256
Pubs id:
1105898
Local pid:
pubs:1105898
Language:
English
Keywords:

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