The luminosities of population II cepheids.
Abstract
A method is described for the distance determination of pulsating stars from measured colors and radial velocities. it follows the line of thought given by Baade and Wesselink. This method does not require any calibration by conventional distance determinations once the depth variation of the expansion velocities in the pulsating stars is known from theory. A period-luminosity relation for Population ii stars with periods between 17.3 and 28.5 days is derived from the stars W Vir, TW Cap, and star No. 42 in MS. Subject headings: Cepheids and W Virginis stars - luminosities
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 1974
- DOI:
- 10.1086/152750
- Bibcode:
- 1974ApJ...188..571B