Population I pulsating stars. V - Approximate period-age relations.

Details Population I pulsating stars. V - Approximate period-age relations. Population I pulsating stars. V - Approximate period-age relations.

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.151...39t&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 151, no. 1, Jan. 1989, p. 39-71.

Astronomy and Astrophysics

Astrophysics

7

Cepheid Variables, Hertzsprung-Russell Diagram, Stellar Evolution, Stellar Oscillations, Astronomical Catalogs, Chemical Composition, Chronology, Pulsars, Star Clusters, Stellar Luminosity, Stellar Mass

Scientific paper

Evolutionary and pulsational considerations and simplifying assumptions are used to show that an approximate estimation of the coefficients of the period-age relations for classical cepheids and Delta Scuti stars can be obtained. In order to determine the age of a Population I pulsating star, it is necessary to account for its evolutionary phase; for Delta Scuti variables, this is core or shell hydrogen burning, and for classical cepheids, this is the number of crossing of the instability strip. It is also shown that the use of simple period-age(-color) relations for Population I pulsating stars gives sufficiently accurate cluster age estimations.

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