dc.contributor.author | Burningham, B. | |
dc.contributor.author | Smith, Leigh | |
dc.contributor.author | Cardoso, C. V. | |
dc.contributor.author | Lucas, P.W. | |
dc.contributor.author | Burgasser, A. J. | |
dc.contributor.author | Jones, H.R.A. | |
dc.contributor.author | Smart, R.L. | |
dc.date.accessioned | 2014-07-01T09:31:30Z | |
dc.date.available | 2014-07-01T09:31:30Z | |
dc.date.issued | 2014-05 | |
dc.identifier.citation | Burningham , B , Smith , L , Cardoso , C V , Lucas , P W , Burgasser , A J , Jones , H R A & Smart , R L 2014 , ' The discovery of a T6.5 subdwarf ' , Monthly Notices of the Royal Astronomical Society , vol. 440 , no. 1 , pp. 359-364 . https://doi.org/10.1093/mnras/stu184 | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | ORCID: /0000-0002-8872-4462/work/62748959 | |
dc.identifier.other | ORCID: /0000-0003-4600-5627/work/64327365 | |
dc.identifier.uri | http://hdl.handle.net/2299/13880 | |
dc.description.abstract | We report the discovery of ULAS J131610.28+075553.0, an sdT6.5 dwarf in the UKIDSS Large Area Survey 2 epoch proper motion catalogue. This object displays significant spectral peculiarity, with the largest yet seen deviations from T6 and T7 templates in the Y and K bands for this subtype. Its large, similar to 1 arcsec yr(-1), proper motion suggests a large tangential velocity of V-tan approximate to 240-340 km s(-1), if we assume its M-J lies within the typical range for T6.5 dwarfs. This makes it a candidate for membership of the Galactic halo population. However, other metal-poor T dwarfs exhibit significant under luminosity both in specific bands and bolometrically. As a result, it is likely that its velocity is somewhat smaller, and we conclude it is a likely thick disc or halo member. This object represents the only T dwarf earlier than T8 to be classified as a subdwarf, and is a significant addition to the currently small number of known unambiguously substellar subdwarfs. | en |
dc.format.extent | 6 | |
dc.format.extent | 763362 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.subject | surveys | |
dc.subject | brown dwarfs | |
dc.subject | stars: low-mass | |
dc.subject | DEEP SKY SURVEY | |
dc.subject | SURVEY-EXPLORER WISE | |
dc.subject | LARGE-AREA SURVEY | |
dc.subject | SUN-LIKE STAR | |
dc.subject | T-DWARFS | |
dc.subject | BROWN DWARFS | |
dc.subject | SPECTRAL CLASSIFICATION | |
dc.subject | ROSS 458C | |
dc.subject | UKIDSS | |
dc.subject | COMPANION | |
dc.title | The discovery of a T6.5 subdwarf | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | Centre for Astrophysics Research (CAR) | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1093/mnras/stu184 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |