Classical Cepheids with and without bumps in the light curves

Details Classical Cepheids with and without bumps in the light curves Classical Cepheids with and without bumps in the light curves

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.173...31t&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 173, no. 1, Nov. 1990, p. 31-46.

Astronomy and Astrophysics

Astrophysics

2

Cepheid Variables, Light Curve, Stellar Envelopes, Stellar Evolution, Stellar Mass, Stellar Models, Stellar Spectrophotometry

Scientific paper

Published observational data (Nikolov, 1968) on 116 Cepheids with periods 6-20 d are analyzed, with a focus on the presence of light-curve bumps and their relationship to the evolutionary stage of the star (in the track models of Iben, 1976, and Paczynski, 1970). The results are presented in tables, and it is shown that the observed fraction of variables without light-curve bumps is significantly greater than that predicted by the theoretical models for stars in the period groups 5.8-7, 7-10, 10-17, and 17-20 d. It is suggested that the absence of bumps may be due to mixing induced by differential rotation or the Rayleigh-Taylor instability; the hypothesis that these Cepheids are crossing the evolutionary-track instability strip for the first time is not supported.

Affiliated with

Also associated with

No associations

Rating

Classical Cepheids with and without bumps in the light curves 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 Classical Cepheids with and without bumps in the light curves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Classical Cepheids with and without bumps in the light curves will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-839277