Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...196..109m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 196, no. 1-2, May 1988, p. 109-114.
Astronomy and Astrophysics
Astrophysics
4
Red Giant Stars, Stellar Oscillations, Variable Stars, Vibration Mode, Autocorrelation, Least Squares Method, Power Spectra, Stellar Luminosity
Scientific paper
It is shown that the light variations of the pulsating red giant Z Sge result from the superimposition of two modes with periods P1 = 190.3 and P2 = 176.4 days and of the non-linear coupling term with period P21 = (1/P2-1/P1)-1. The amplitudes of these terms and the mean star brightness are not constant. The two periods should correspond to second and third radial overtones and this is in contrast with the present believing that long period variable stars would pulsate in the fundamental or in the first overtone modes. The presence of a third mode with P = 235 days is guessed. If it is real it should be the first overtone mode. The similarity between the two most excited modes and those recently discovered in V CVn is pointed out.
No associations
LandOfFree
The multimode red semi-regular variable Z SGE 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 The multimode red semi-regular variable Z SGE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The multimode red semi-regular variable Z SGE will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-853557