SIMBAD references

2006BaltA..15..255K - Baltic Astronomy, 15, 255-258 (2006/April-0)

Four rapidly pulsating sdB stars revisited.

KILKENNY D., KOTZE J.P., JURUA E., BROWNSTONE M. and BABIKER H.A.

Abstract (from CDS):

We have re-observed four rapidly-pulsating sdB stars during 2003 and 2004 and compared the results to earlier observations. The class prototype, EC 14026-2647 (=V361 Hya), had a weak frequency which has apparently disappeared, whilst a new frequency has appeared. In EC 20338-1925, the strongest frequency (6806 µHz; ampl. 0.026 mag) has reduced to about 0.004 mag, and weaker frequencies have come and gone. Between 1997 and 2004, the complex pulsator, PG 1605+072 (=V338 Ser), has had its strongest frequency (f1) halve in amplitude, f3 and f4 double in amplitude, whilst f2 has remained essentially constant. Finally, HS 2149+0847 (=V384 Peg) shows no significant change between 2003 and 2004, but we have increased the number of known frequencies from two to six.

Abstract Copyright:

Journal keyword(s): stars: oscillations - stars: horizontal-branch

Simbad objects: 5

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