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A 1500 deg2 near infrared proper motion catalogue from the UKIDSS Large Area Survey
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Smith, Leigh, Lucas, P. W., Burningham, B., Jones, H. R. A., Smart, R. L., Andrei, A. H., Catalan, Silvia and Pinfield, D. J. (2013) A 1500 deg2 near infrared proper motion catalogue from the UKIDSS Large Area Survey. Monthly Notices of the Royal Astronomical Society, Volume 437 (Number 4). pp. 3603-3625. doi:10.1093/mnras/stt2156
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Official URL: http://dx.doi.org/10.1093/mnras/stt2156
Abstract
The United Kingdom Infrared Deep Sky Survey (UKIDSS) Large Area Survey (LAS) began in 2005, with the start of the UKIDSS programme as a 7 year effort to survey roughly 4000 deg2 at high Galactic latitudes in Y, J, H and K bands. The survey also included a significant quantity of two epoch J band observations, with an epoch baseline greater than 2 years to calculate proper motions. We present a near-infrared proper motion catalogue for the 1500 deg2 of the two epoch LAS data, which includes 135 625 stellar sources and a further 88 324 with ambiguous morphological classifications, all with motions detected above the 5σ level. We developed a custom proper motion pipeline which we describe here. Our catalogue agrees well with the proper motion data supplied for a 300 deg2 subset in the current Wide Field Camera Science Archive (WSA) 10th data release (DR10) catalogue, and in various optical catalogues, but it benefits from a larger matching radius and hence a larger upper proper motion detection limit. We provide absolute proper motions, using LAS galaxies for the relative to absolute correction. By using local second-order polynomial transformations, as opposed to linear transformations in the WSA, we correct better for any local distortions in the focal plane, not including the radial distortion that is removed by the UKIDSS pipeline. We present the results of proper motion searches for new brown dwarfs and white dwarfs. We discuss 41 sources in the WSA DR10 overlap with our catalogue with proper motions >300 mas yr−1, several of which are new detections. We present 15 new candidate ultracool dwarf binary systems.
| Item Type: | Journal Article | ||||||||
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| Subjects: | Q Science > QB Astronomy Q Science > QC Physics |
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| Divisions: | Faculty of Science > Physics | ||||||||
| Library of Congress Subject Headings (LCSH): | Brown dwarf stars, Low mass stars, Stars -- Catalogs, Stellar dynamics, Double stars | ||||||||
| Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||
| Publisher: | Oxford University Press | ||||||||
| ISSN: | 0035-8711 | ||||||||
| Official Date: | 10 December 2013 | ||||||||
| Dates: |
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| Volume: | Volume 437 | ||||||||
| Number: | Number 4 | ||||||||
| Page Range: | pp. 3603-3625 | ||||||||
| DOI: | 10.1093/mnras/stt2156 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Funder: | Science and Technology Facilities Council (Great Britain) (STFC), Seventh Framework Programme (European Commission) (FP7), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | ||||||||
| Grant number: | 247593 (FP7), PQ306775/2009-3 (CNPq) |
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