Properties and nature of shell stars. 3. Periodic radial-velocity changes of 4 Herculis.
Abstract
Summary. The radial velocity of shell hydrogen lines of 4 Her measured on Ondrejov and Victoria high-dispersion spectrograms of 1969-1972 was found to vary with a period of instead of established by Heard (1940). The original binary hypothesis is revived. Key words: shell stars - spectroscopic binary - radial velocity of hydrogen lines
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1973
- Bibcode:
- 1973A&A....22..337H