Pulsation and orbit of AU Pegasi

Details Pulsation and orbit of AU Pegasi Pulsation and orbit of AU Pegasi

2007-05-16

arxiv.org/abs/0705.2389v1

Astronomy and Astrophysics

Astrophysics

4 pages, 10 figures

Scientific paper

10.1002/asna.200710814

AU Pegasi is a pulsating star in a spectroscopic binary system with an orbital period of 53.26 days. Between 1960 and 1990 an extremely rapid period increase was observed in the value of the pulsation period, but in the last 15 years the observation show that the period set in 2.411 days. Fourier analysis of photometric data obtained during the ASAS project and those taken at the Piszkesteto Mountain Station of the Konkoly Observatory during 1994-2005 indicate that AU Pegasi is pulsating in two modes simultaneously, and the ratio of the frequencies of the two modes is 0.706, a value common for double-mode classical Cepheids. A careful analysis of other photometric observations obtained during the era of the strong period increase also revealed existence of a second mode. This may suggest that this star is not a Type II Cepheid, despite its galactic position.

Affiliated with

Also associated with

No associations

Rating

Pulsation and orbit of AU Pegasi 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 Pulsation and orbit of AU Pegasi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulsation and orbit of AU Pegasi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-670665