2MASS J10274572+0629104: the very short period young M6 dwarf binary system identified in K2 data

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dc.contributor.authorPaudel, Rishi R
dc.contributor.authorGizis, John E.
dc.contributor.authorBurgasser, Adam J.
dc.contributor.authorHsu, Chih-Chun
dc.date.accessioned2022-02-14T15:33:16Z
dc.date.available2022-02-14T15:33:16Z
dc.date.issued2019-04-13
dc.description.abstractWe report the identification of a very low mass new binary system 2MASS J10274572+0629104, based on Kepler K2 photometry and Gaia DR2 astrometry. The K2 light curve is consistent with a beat pattern of two periodic signals, and using Lomb-Scargle periodogram, we find two rotation periods of 0.2114±0.0002 day and 0.2199±0.0003 day. We conclude that these rotation periods arise from two stars with similar spectral types of M6, and have near equal luminosity. It is the first ultracool binary system to be identified based on beat patterns in the light curve. Near-infrared spectroscopy yields RV = -9.8±0.6 km s⁻¹, v sin i =21.5±1.1 km s⁻¹, Tₑᶠᶠ = 3110±40 K, and log g = 5.2±0.2. The motions are consistent with a young age, as are the rotation periods, but the source does not appear to be part of any known moving group. Furthermore, we detected three strong white light flares in the K2 light curve, with estimated total bolometric (UV/optical/IR) energies to be 2.8 × 10³³, 5.2 × 10³³ and 3.8 × 10³³ erg respectivelyen_US
dc.description.sponsorshipWe are thankful to James MacDonald for his helpful suggestions. The material is based upon work supported by NASA under award Nos. NNX15AV64G, NNX16AE55G and NNX16AJ22G. Some/all of the data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). STScI is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission directorate. This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https:// www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This work made use of the http://gaia-kepler.fun crossmatch database created by Megan Bedell.en_US
dc.description.urihttps://academic.oup.com/mnras/article/486/3/4144/5454774?searchresult=1en_US
dc.format.extent4 pagesen_US
dc.genrejournal articlesen_US
dc.genrepreprintsen_US
dc.identifierdoi:10.13016/m27tiy-gxr2
dc.identifier.citationR R Paudel, J E Gizis, A J Burgasser, C Hsu, 2MASS J10274572+0629104: the very short period young M6 dwarf binary system identified in K2 data, Monthly Notices of the Royal Astronomical Society, Volume 486, Issue 3, July 2019, Pages 4144–4148, https://doi.org/10.1093/mnras/stz1067en_US
dc.identifier.urihttps://doi.org/10.1093/mnras/stz1067
dc.identifier.urihttp://hdl.handle.net/11603/24259
dc.language.isoen_USen_US
dc.publisherOxford University Pressen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication Monthly Notices of the Royal Astronomical Society following peer review. The version of record R R Paudel, J E Gizis, A J Burgasser, C Hsu, 2MASS J10274572+0629104: the very short period young M6 dwarf binary system identified in K2 data, Monthly Notices of the Royal Astronomical Society, Volume 486, Issue 3, July 2019, Pages 4144–4148, https://doi.org/10.1093/mnras/stz1067 is available online at: https://academic.oup.com/mnras/article/486/3/4144/5454774?searchresult=1en_US
dc.title2MASS J10274572+0629104: the very short period young M6 dwarf binary system identified in K2 dataen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-8090-3570en_US

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