Discovery of the first white dwarf + T dwarf binary system and the use of white dwarfs as age calibrators

Bibcode
2010AIPC.1273..366D
DOI
10.1063/1.3527843
Day-Jones, A. C.; Pinfield, D. J.; Ruiz, M. T.; Beaumont, H.; Gallardo, J.; Gianninas, A.; Bergeron, P.; Napiwotzki, R.; Jenkins, J. S.; Burningham, B.; Zhang, Z. H.; Jones, H. R. A.; Murray, D.; Catálan, S.; Gomes, J.
Bibliographical reference

17TH EUROPEAN WHITE DWARF WORKSHOP. AIP Conference Proceedings, Volume 1273, pp. 366-371 (2010).

Advertised on:
11
2010
Number of authors
15
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We present the discovery of the first white dwarf + T dwarf binary system. Systems containing a white dwarf and a brown dwarf are rare but can be used to place constraints on the age of the binary, making them valuable benchmark systems. It is currently not possible to calculate brown dwarf ages from models alone and white dwarfs provide an opportunity to aid the calibration of these models. We describe our program to identify such benchmark binary systems in the latest releases of UKIDSS/SDSS and review the level of constraints currently provided by benchmark objects. Finally we describe the niche age space that white dwarf + brown dwarf binary systems can provide and look at how many more systems may be identified in future surveys, such as VISTA and WISE.
Type
Non-refereed

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