Radial pulsation modes as a possible cause for the heterogeneity of the Delta Scuti stars

Details Radial pulsation modes as a possible cause for the heterogeneity of the Delta Scuti stars Radial pulsation modes as a possible cause for the heterogeneity of the Delta Scuti stars

Dec 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ap%26ss.117..137t&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 117, no. 1, Dec. 1985, p. 137-149.

Astronomy and Astrophysics

Astrophysics

25

Astronomical Photometry, Heterogeneity, Periodic Variations, Stellar Oscillations, Variable Stars, Stellar Luminosity, Tables (Data)

Scientific paper

On the basis of photometric observations, about 10 - 15 years ago several investigators suggested an interesting possibility that the Delta Scuti variables could be devided into two groups in the H-R, P-L, and other diagrams. On the basis of the observational data for about 60 stars (Breger and Bregman, 1975), the author suggests that the scatter on the P-L plane may be mainly due to stellar oscillations in various radial modes. In the present paper, on the basis of much more numerous data - for about 90 relatively well-studied stars from Breger's (1979) list - the author confirms and extends his previous results.

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