Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...246..441z&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 246, no. 2, June 1991, p. 441-446.
Astronomy and Astrophysics
Astrophysics
22
Light Curve, Stellar Spectrophotometry, Supergiant Stars, Variable Stars, Power Spectra, Stellar Evolution, Stellar Luminosity, Stellar Temperature, Ubv Spectra
Scientific paper
The variable yellow hypergiant Rho Cas has been observed photoelectrically since 1978 (since 1983 by members of the American Association of Variable Star Observers). Analysis of all available observations indicates at least one significant period, P = 298.5 d, which is apparently constant since 1963. The effect of shell ejections on the light curve makes it difficult to identify other periods, and assess their significance. The color curves of Rho Cas became significantly redder in the late 1970s; this change, however, was not reflected by any long-term trend in the V-curve. It seems that the best explanation for this observation is that it is a consequence of a temperature (and also mean spectral type) change of the star occurring at constant luminosity. It is argued that the behavior of Rho Cas is best explained by assuming that it is still before the red supergiant phase in its evolution.
Percy John R.
Zsoldos Endre
No associations
LandOfFree
Photometry of yellow semiregular variables - Rho Cassiopeiae 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 Photometry of yellow semiregular variables - Rho Cassiopeiae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometry of yellow semiregular variables - Rho Cassiopeiae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1277757