A study of 48 Librae in the period 1950 - 1962.
Abstract
Radial velocities of the Na D lines, H , He 15876 and 6678 and Si H 6347 and 6371 and proffles of the Na D lines and H have been measured on spectra of 48 Librae taken in the period 1950-1962. The radial velocities of the H absorption core do not fit on the mean radial velocity curve but indicate that the material from which this line is formed is expanding with a constant velocity of about -25 km -1 The proffles of the Na D lines and of H change during the radial velocity cycle. Some considerations about the shell are given. Key words: 48 Librae - radial velocities - line proffles - Na D lines, H
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- June 1969
- Bibcode:
- 1969A&A.....2..162F