Research study of. beta. Cephei variable stars using data from OAO-2. Final technical report, 1 May 1974--30 Apr 1975

Technical Report · Wed Apr 30 04:00:00 EDT 1975

OSTI ID:7330161

Lesh, J R

Photometric data from the Wisconsin Experiment package on OAO-2 were obtained for six ..beta.. Cephei variable stars. The data were reduced in accordance with the OAO 2/Wisconsin Experiment Package Photometer Users Guide. For delta Cet and ..gamma.. Peg, there were enough data points to form reliable composite light curves at seven or eight ultraviolet wavelengths. The light curves are well represented by sine waves in phase with the blue light curve for each star. The amplitude of the light variation increases with shorter wavelengths. For theta Oph, epsilon Cen, eta Sco, and lambda Sco, mean magnitudes and light ranges were obtained at several ultraviolet wavelengths. No significant differences were found between the mean, de-reddened ultraviolet colors of the observed stars, and the mean values for standard stars computed by Bottemiller. An attempt to derive a temperature scale from a comparison of the observed ultraviolet colors with Kurucz models was unsuccessful. (auth)

• Research Organization: Denver Univ., Colo. (USA). Dept. of Physics and Astronomy
• OSTI ID: 7330161
• Report Number(s): N-75-25783; NASA-CR-142804
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CEPHEIDS
ELECTROMAGNETIC RADIATION
PHOTOMETRY
RADIATIONS
STARS
ULTRAVIOLET RADIATION
VARIABLE STARS