Change of splittings in Balloon 090100001

Details Change of splittings in Balloon 090100001 Change of splittings in Balloon 090100001

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007coast.150..261b&link_type=abstract

Communications in Astroseismology, Vol. 150, p.261

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the first results obtained during the multi-site campaign on the brightest pulsating sdB star Balloon 090100001. Our campaign was carried out in August and September 2005 spanning over 7 weeks. From the frequency analysis we confirm most of frequencies discovered during the 2004 campaign including an equidistant triplet and a quintuplet. The triplet and quintuplet have nearly the same separations, clearly indicating that rotational splitting might be involved. However, the splitting of multiplets increased by about 15% between 2004 and 2005. As far as we are aware, this is the first example of such a large change of frequency splitting in a pulsating star.

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