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White dwarfs with unresolved substellar companions and debris disks in the UKIDSS Survey

Citation

Steele, P and Burleigh, M and Barstow, M and Jameson, R and Dobbie, PD, White dwarfs with unresolved substellar companions and debris disks in the UKIDSS Survey, Journal of Physics: Conference Series (Print), 172, (1 (2009)) Article 012058. ISSN 1742-6588 (2009) [Refereed Article]

Copyright Statement

Copyright 2009 IOP Publishing

DOI: doi:10.1088/1742-6596/172/1/012058

Abstract

We present a near-infrared (NIR) photometric search for substellar companions and debris disks around white dwarfs in the UKIRT Infrared Deep Sky Survey (UKIDSS). We cross-correlate the SDSS DR4 and McCook & Sion catalogues of white dwarfs with the UKIDSS DR3 database producing 408 and 133 matches respectively. Models are then fitted to Sloan photometry to identify those with NIR photometric excesses consistent with an unresolved sub-stellar companion or a debris disk. We present follow up photometry from targets previously identified in UKIDSS DR2 and the first results from DR3. In total we identify 8 potential white dwarf + very low mass binary systems, 2 potential white dwarf + disk systems, and 2 systems which require further investigation to clarify the source of the excess.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical and Space Sciences
Research Field:Stellar Astronomy and Planetary Systems
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Physical Sciences
Author:Dobbie, PD (Dr Paul Dobbie)
ID Code:81025
Year Published:2009
Web of Science® Times Cited:3
Deposited By:Mathematics and Physics
Deposited On:2012-11-21
Last Modified:2013-05-31
Downloads:0

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