Latitude Distribution of Star-spots on the G Dwarf He 699

Details Latitude Distribution of Star-spots on the G Dwarf He 699 Latitude Distribution of Star-spots on the G Dwarf He 699

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003csss...12..916j&link_type=abstract

The Future of Cool-Star Astrophysics: 12th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (2001 July 30 - August

Astronomy and Astrophysics

Astrophysics

Scientific paper

We analyse the latitude distribution of star-spots on the rapidly rotating G dwarf He 699. An image was reconstructed from data taken with the William Herschel Telescope on La Palma on 2000 October 08. The predominant magnetic field structure is a decentred polar spot at high latitude, with smaller low latitude features also present. This result was verified by independent reconstructions using even numbered and odd numbered spectra. This work confirms and extends that of Barnes et al.,(2001,MNRAS,326,1057) and provides further evidence that there is a correlation between the presence of low latitude features and the amplitude of the photometric lightcurve. It is also a further step in the search for activity cycles on young G dwarfs.

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