Pulsating B Stars Discovered by HIPPARCOS

Details Pulsating B Stars Discovered by HIPPARCOS Pulsating B Stars Discovered by HIPPARCOS

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006javso..35...58a&link_type=abstract

The Journal of the American Association of Variable Star Observers, Vol. 35, No. 1, p. 58

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Scientific paper

We present a classification of 267 new variable B-type stars discovered by Hipparcos, which results in, among others, a huge number of new Slowly Pulsating B stars and several supergiants with ? Cyg-type variations. Our results clearly point out the bias towards short-period variables of earlier, ground-based surveys of variable stars.
The position of the new beta Cephei stars and Slowly Pulsating B stars in the HR diagram is compared with the most recent calculations of the instability strips. The new Slowly Pulsating B stars almost fully cover the theoretical instability domain. The supergiants with ? Cyg-type variations are situated between the ? Cephei stars and the Slowly Pulsating B stars, on the one hand and, previously known supergiants that exhibit micro-variations on the other hand.
Finally, we introduce the follow-up study of the most interesting targets that we have started in the course of 1996 and that is still ongoing.

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