Astron. Astrophys. Suppl. Ser.
Volume 138, Number 1, July 1999
|Page(s)||11 - 18|
|Published online||15 July 1999|
Determination of physical parameters of five large amplitude δ Scuti stars
Instituto de Astronomía, UNAM, Mexico Apartado Postal 70-264, D.F., Mexico
Send offprint request to: J.H. Peña
Accepted: 1 March 1999
photometry of the large amplitude δ Scuti stars BP Peg, DY Peg, DY Her, CY Aqr and YZ Boo is presented. Since the data were obtained almost simultaneously in all filters, meaningful physical parameters have been derived for each star along their pulsation cycles using the calibrations from [Nissen (1988)] for A and F stars to determine the reddening and derive the unreddened photometric values. The utilization of the theoretical grids of [Relyea & Kurucz (1978)] has allowed temperature and gravity values to be determined. A comparison with previously reported values is presented.
Key words: stars: fundamental parameters / δ Sct
© European Southern Observatory (ESO), 1999