A study of the spectrum of alpha2 Canum Venaticorum.
Abstract
The spectrum of a2 Canum Venaticorum has been studied by means of traces made on a Moll microphotometer, and the intensities of lines have been measured and plotted with a view to detecting periodic variations. The existence of two groups of variable absorption lines has been confirmed, and periodic variation has been found for individual emission lines. Periodic variation has been found for lines formerly considered steady and notably for lines not due to rare earths. The most important of these lines are Ca~3933, Si~4I28, and Mg~448I. The wave-lengths of emission lines have been measured
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1929
- DOI:
- 10.1086/143203
- Bibcode:
- 1929ApJ....70..114A