A survey of AE and A-type shell stars in the photographic region.
Abstract
A total of 28 northern Ae and A-type shell stars were observed in the photographic spectral region. A regular pattern of line behavior with spectral type was found, which in part prolongs the behavior of Be stars toward cooler stars, although a discontinuity seems present around A0. A survey of other data concerning colors, rotation, variability, etc., is also presented. Photometrically the stars simulate the behavior of higher-luminosity objects. A large proportion of shells seems to be variable. The attempt to detect new shell stars among 13 stars known to be rapid rotators with normal spectra failed, however.
- Publication:
-
Astronomy and Astrophysics Supplement Series
- Pub Date:
- March 1988
- Bibcode:
- 1988A&AS...72..505J
- Keywords:
-
- A Stars;
- Astronomical Photography;
- Shell Stars;
- Stellar Spectra;
- Balmer Series;
- Classifications;
- Stellar Color;
- Stellar Rotation;
- Astrophysics