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The 'DODO' survey - I. Limits on ultra-cool substellar and planetary-mass companions to van Maanen's star (vMa 2)

Abstract:

We report limits in the planetary-mass regime for companions around the nearest single white dwarf to the Sun, van Maanen's star (vMa 2), from deep J-band imaging with Gemini North and Spitzer Infrared Array Camera (IRAC) mid-IR photometry. We find no resolved common proper motion companions to vMa 2 at separations from 3 to 45 arcsec, at a limiting magnitude of J ≈ 23. Assuming a total age for the system of 4.1 ± 1 Gyr, and utilizing the latest evolutionary models for substellar objects, thi...

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Publication status:
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Authors


Burleigh, MR More by this author
Clarke, FJ More by this author
Brinkworth, CS More by this author
Bergeron, P More by this author
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Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
386
Issue:
1
Pages:
L5-L9
Publication date:
2008-05-01
DOI:
EISSN:
1745-3933
ISSN:
0035-8711
URN:
uuid:64c5ac43-df42-4fe2-a306-1ccc5b248fa2
Source identifiers:
160998
Local pid:
pubs:160998

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