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

Stauffer, J.; Barrado, D.; David, T.; Rebull, L. M.; Hillenbrand, L. A.; Mamajek, E. E.; Oppenheimer, R.; Aigrain, S.; Bouy, H.; Lillo Box, J.

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

dc.contributor.author	Stauffer, J.
dc.contributor.author	Barrado, D.
dc.contributor.author	David, T.
dc.contributor.author	Rebull, L. M.
dc.contributor.author	Hillenbrand, L. A.
dc.contributor.author	Mamajek, E. E.
dc.contributor.author	Oppenheimer, R.
dc.contributor.author	Aigrain, S.
dc.contributor.author	Bouy, H.
dc.contributor.author	Lillo Box, J.
dc.contributor.funder	Agencia Estatal de Investigación (AEI)
dc.contributor.funder	National Aeronautics and Space Administration (NASA)
dc.contributor.orcid	Stauffer, J. [0000-0003-3595-7382]
dc.contributor.orcid	David, T. [0000-0001-6534-6246]
dc.contributor.orcid	Rebull, L. M. [0000-0001-6381-515X]
dc.contributor.orcid	Mamajek, E. E. [0000-0003-2008-1488]
dc.contributor.orcid	Oppenheimer, R. [0000-0001-7130-7681]
dc.contributor.orcid	Aigrain, S. [0000-0003-1453-0574]
dc.contributor.orcid	Bouy, H. [0000-0002-7084-487X]
dc.contributor.other	Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737
dc.date.accessioned	2021-04-13T14:18:16Z
dc.date.available	2021-04-13T14:18:16Z
dc.date.issued	2020-06-18
dc.description.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, HHJ 339 and HHJ 430, are indeed not members of the Pleiades. Based on their space motions, parallaxes, and positions in a Gaia-based color–magnitude diagram, it is probable that these two stars are about 40 parsecs foreground to the Pleiades and have ages of ~25 Myr. Kinematically they are best matched to the 32 Ori moving group.	es
dc.description.peerreviewed	Peer review	es
dc.description.sponsorship	Some of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). Support for MAST for non-Hubble Space Telescope data is provided by the NASA Office of Space Science via grant NNX09AF08G and by other grants and contracts. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. This research has made use of the NASA/IPAC Infrared Science Archive (IRSA), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of data products from the Two Micron All-Sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, funded by the National Aeronautics and Space Administration and the National Science Foundation. The 2MASS data are served by the NASA/IPAC Infrared Science Archive, which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. This research has made use of NASA's Astrophysics Data System (ADS) Abstract Service, and of the SIMBAD database, operated at CDS, Strasbourg, France. Part of this research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. D.B. and J.L.B. have been funded by the Spanish State Research Agency (AEI) Projects No. ESP2017-87676-C5-1-R and No. MDM-2017-0737 Unidad de Excelencia "Maria de Maeztu"-Centro de Astrobiologia (INTA-CSIC).	es
dc.identifier.citation	The Astronomical Journal 160(1): 30(2020)	es
dc.identifier.doi	10.3847/1538-3881/ab93c9
dc.identifier.e-issn	1538-3881
dc.identifier.funder	http://dx.doi.org/10.13039/501100011033
dc.identifier.funder	http://dx.doi.org/10.13039/100000104
dc.identifier.issn	0004-6256
dc.identifier.other	https://iopscience.iop.org/article/10.3847/1538-3881/ab93c9
dc.identifier.uri	http://hdl.handle.net/20.500.12666/327
dc.language.iso	eng	es
dc.publisher	The Institute of Physics (IOP)	es
dc.relation	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-87676-C5-1-R
dc.rights	Attribution-NonCommercial-NoDerivatives 4.0 International	*
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.license	Published 2020 June 18 • © 2020. The American Astronomical Society. All rights reserved.
dc.rights.uri	https://creativecommons.org/licenses/by-nc-nd/4.0/	*
dc.subject	Moving clusters	es
dc.subject	Star clusters	es
dc.subject	Open star clusters	es
dc.title	Pleiades or Not? Resolving the Status of the Lithium-rich M Dwarfs HHJ 339 and HHJ 430	es
dc.type	info:eu-repo/semantics/article	es
dc.type.coar	http://purl.org/coar/resource_type/c_6501
dc.type.hasVersion	info:eu-repo/semantics/publishedVersion
dspace.entity.type	Publication