dc.contributor.author | Burningham, B. | |
dc.contributor.author | Pinfield, D.J. | |
dc.contributor.author | Lucas, P.W. | |
dc.contributor.author | Leggett, S.K. | |
dc.contributor.author | Deacon, Niall | |
dc.contributor.author | Tamura, M. | |
dc.contributor.author | Tinney, C.G. | |
dc.contributor.author | Lodieu, N. | |
dc.contributor.author | Zhang, Z. | |
dc.contributor.author | Huelamo, N. | |
dc.contributor.author | Jones, H.R.A. | |
dc.contributor.author | Murray, D.N. | |
dc.contributor.author | Mortlock, D.J. | |
dc.contributor.author | Patel, M. | |
dc.contributor.author | Barrado y Navascues, D. | |
dc.contributor.author | Zapatero Osorio, M.R. | |
dc.contributor.author | Ishii, M. | |
dc.contributor.author | Kuzuhara, M. | |
dc.contributor.author | Smart, R.L. | |
dc.date.accessioned | 2011-02-01T15:44:32Z | |
dc.date.available | 2011-02-01T15:44:32Z | |
dc.date.issued | 2010 | |
dc.identifier.citation | Burningham , B , Pinfield , D J , Lucas , P W , Leggett , S K , Deacon , N , Tamura , M , Tinney , C G , Lodieu , N , Zhang , Z , Huelamo , N , Jones , H R A , Murray , D N , Mortlock , D J , Patel , M , Barrado y Navascues , D , Zapatero Osorio , M R , Ishii , M , Kuzuhara , M & Smart , R L 2010 , ' 47 new T dwarfs from the UKIDDS large area survey ' , Monthly Notices of the Royal Astronomical Society , vol. 406 , no. 3 , pp. 1885-1906 . https://doi.org/10.1111/j.1365-2966.2010.16800.x | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.other | PURE: 165536 | |
dc.identifier.other | PURE UUID: 66b1f640-3c2c-4514-be26-92dd83290bdd | |
dc.identifier.other | dspace: 2299/5269 | |
dc.identifier.other | Scopus: 77955262073 | |
dc.identifier.other | ORCID: /0000-0002-8872-4462/work/62748842 | |
dc.identifier.other | ORCID: /0000-0003-4600-5627/work/64327311 | |
dc.identifier.uri | http://hdl.handle.net/2299/5269 | |
dc.description | The definitive version can be found at: http://onlinelibrary.wiley.com Copyright Royal Astronomical Society | |
dc.description.abstract | We report the discovery of 47 new T dwarfs in the Fourth Data Release (DR4) from the Large Area Survey (LAS) of the United Kingdom Infrared Telescope (UKIRT) Infrared Deep Sky Survey with spectral types ranging from T0 to T8.5. These bring the total sample of LAS T dwarfs to 80 as of DR4. In assigning spectral types to our objects we have identified eight new spectrally peculiar objects, and divide seven of them into two classes. H2O-H-early have a H2O-H index that differs with the H2O-J index by at least two subtypes. CH4-J-early have a CH4-J index that disagrees with the H20-J index by at least two subtypes. We have ruled out binarity as a sole explanation for both types of peculiarity, and suggest that they may represent hitherto unrecognized tracers of composition and/or gravity. Clear trends in z′(AB) −J and Y−J are apparent for our sample, consistent with weakening absorption in the red wing of the K i line at 0.77 μm with decreasing effective temperature. We have used our sample to estimate space densities for T6–T9 dwarfs. By comparing our sample to Monte Carlo simulations of field T dwarfs for various mass functions of the form ψ(M) ∝ M− pc−3 M−1⊙, we have placed weak constraints on the form of the field mass function. Our analysis suggests that the substellar mass function is declining at lower masses, with negative values of preferred. This is at odds with results for young clusters that have been generally found to have > 0. [see original online abstract for correct notation] | en |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society | |
dc.title | 47 new T dwarfs from the UKIDDS large area survey | en |
dc.contributor.institution | Centre for Astrophysics Research | |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | Science & Technology Research Institute | |
dc.contributor.institution | School of Physics, Engineering & Computer Science | |
dc.contributor.institution | Department of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Engineering and Technology | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | https://doi.org/10.1111/j.1365-2966.2010.16800.x | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |