A survey of Cepheid sizes

Details A survey of Cepheid sizes A survey of Cepheid sizes

Publishing date

Jul 1984

URL

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...282..641f&link_type=abstract

Journals

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 282, July 15, 1984, p. 641-649.

Science

Astronomy and Astrophysics

Field

Astrophysics

Additional info 2

48

Additional info 3

Cepheid Variables, Stellar Color, Stellar Magnitude, Stellar Temperature, Hertzsprung-Russell Diagram, Open Clusters, Radii

Type

Scientific paper

Abstract

The radius is one of the fundamental physical parameters governing a Cepheid's pulsation. If the radius of a Cepheid can be established independently of its luminosity and temperature, that radius, combined with a temperature scale, can yield the Cepheid's luminosity. The Baade-Wesselink (BW) method provides an approach for determining a Cepheid's radius independently of any temperature or luminosity scale. In connection with the present investigation, data regarding individual BW radius determinations are provided in a table. The best BW radii are selected and a period-radius (P-R) relation is determined. The obtained relation is compared to theoretical P-R relations. The BW and theoretical relations are compared to one obtained from the luminosities and temperatures of Cepheids in open clusters and associations.

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