Photometric Variability of B and Be Stars

Details Photometric Variability of B and Be Stars Photometric Variability of B and Be Stars

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997esasp.402..315h&link_type=abstract

Proceedings of the ESA Symposium `Hipparcos - Venice '97', 13-16 May, Venice, Italy, ESA SP-402 (July 1997), p. 315-318

Physics

5

Scientific paper

Rapid variability (=< 3.5 d) of B and Be stars can be explained as the consequence of non-radial pulsations or a rotational modulation. Such a variability has been searched for in a sample of 26 B and 23 Be bright stars (V =< 5) with photometric measurements by Hipparcos. Among B stars, quoted in the literature as NSV (New Suspected Variable) stars, 14 of them have been confirmed by Hipparcos data as microvariables. Almost all the Be stars of the sample have shown a rapid variability superimposed on long-term changes. The total amplitude of the long-term variability ranges between about 0.05 and 0.3 mag depending on the considered star. The total amplitude of the short-term variations seems to be higher for Be stars than for B stars. Furthermore some Be stars have shown during the Hipparcos mission, recurrent outbursts with a variable strength and/or fading events. Finally, short periodicities (P =< 3.5 d) have been suspected or confirmed in more than half of Be stars and in a few B stars of the sample.

Affiliated with

Also associated with

No associations

Rating

Photometric Variability of B and Be Stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Photometric Variability of B and Be Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric Variability of B and Be Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1879101