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Journal article

Magnetic activity in the photosphere of CoRoT-Exo-2a Active longitudes and short-term spot cycle in a young Sun-like star

Abstract:

Context. The space experiment CoRoT has recently detected transits by a hot Jupiter across the disc of an active G7V star (CoRoT-Exo-2a) that can be considered as a good proxy for the Sun at an age of approximately 0.5 Gyr.Aims. We present a spot modelling of the optical variability of the star during 142 days of uninterrupted observations performed by CoRoT with unprecedented photometric precision.Methods. We apply spot modelling approaches previously tested in the case of the Sun by modelli...

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Publication status:
Published

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Publisher copy:
10.1051/0004-6361:200810591

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Astrophysics
Role:
Author
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Journal:
ASTRONOMY and ASTROPHYSICS
Volume:
493
Issue:
1
Pages:
193-200
Publication date:
2009-01-01
DOI:
EISSN:
1432-0746
ISSN:
0004-6361
Source identifiers:
158472
Language:
English
Keywords:
Pubs id:
pubs:158472
UUID:
uuid:533b8053-a08f-4aa7-bcdc-3463e8d41f49
Local pid:
pubs:158472
Deposit date:
2012-12-19

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