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dc.contributor.authorSmart, R. L.
dc.contributor.authorApai, D'aniel
dc.contributor.authorKirkpatrick, J. Davy
dc.contributor.authorLeggett, S. K.
dc.contributor.authorMarocco, F.
dc.contributor.authorMorrison, Jane E.
dc.contributor.authorJones, H. R. A.
dc.contributor.authorPinfield, D.
dc.contributor.authorTremblin, P.
dc.contributor.authorAmundsen, D. S.
dc.date.accessioned2017-06-27T16:54:29Z
dc.date.available2017-06-27T16:54:29Z
dc.date.issued2017-07
dc.identifier.citationParallaxes and infrared photometry of three Y0 dwarfs 2017, 468 (3):3764 Monthly Notices of the Royal Astronomical Societyen
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.doi10.1093/mnras/stx723
dc.identifier.urihttp://hdl.handle.net/10150/624429
dc.description.abstractWe have followed up the three Y0 dwarfs WISEPA J041022.71+150248.5, WISEPA J173835.53+273258.9 and WISEPC J205628.90+145953.3 using the United Kingdom Infrared Telescope Wide Field Camera. We find parallaxes that are more consistent and accurate than previously published values. We estimate absolute magnitudes in photometric passbands from Y to W3 and find them to be consistent between the three Y0 dwarfs indicating that the inherent cosmic absolute magnitude spread of these objects is small. We examine the Mauna Kea Observatory system J magnitudes over the 4 yr time line and find small but significant monotonic variations. Finally, we estimate physical parameters from a comparison of spectra and parallax to equilibrium and non-equilibrium models finding values consistent with solar metallicity, an effective temperature of 450-475 K and log g of 4.0-4.5.
dc.description.sponsorshipHenri Chretien International Research Grant; Visiting Professorship with the Leverhulme Trust [VP1-2015-063]; Gemini Observatory; UK's Science and Technology Facilities Council [ST/M001008/1]; Marie Curie 7th European Community Framework Programme [247593]en
dc.language.isoenen
dc.publisherOXFORD UNIV PRESSen
dc.relation.urlhttps://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stx723en
dc.rights© 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.en
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjecttechniques: spectroscopicen
dc.subjectastrometryen
dc.subjectparallaxesen
dc.subjectbrown dwarfsen
dc.titleParallaxes and infrared photometry of three Y0 dwarfsen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Lunar & Planetary Laben
dc.identifier.journalMonthly Notices of the Royal Astronomical Societyen
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-06-25T15:58:06Z
html.description.abstractWe have followed up the three Y0 dwarfs WISEPA J041022.71+150248.5, WISEPA J173835.53+273258.9 and WISEPC J205628.90+145953.3 using the United Kingdom Infrared Telescope Wide Field Camera. We find parallaxes that are more consistent and accurate than previously published values. We estimate absolute magnitudes in photometric passbands from Y to W3 and find them to be consistent between the three Y0 dwarfs indicating that the inherent cosmic absolute magnitude spread of these objects is small. We examine the Mauna Kea Observatory system J magnitudes over the 4 yr time line and find small but significant monotonic variations. Finally, we estimate physical parameters from a comparison of spectra and parallax to equilibrium and non-equilibrium models finding values consistent with solar metallicity, an effective temperature of 450-475 K and log g of 4.0-4.5.


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