Photometry of peculiar stars around lambda 4200
Abstract
Photometric indices around the region lambda 4200 are defined to study the intense line blocking present in the spectra of Bp and Ap stars: Delta C(J). It is shown that photometric indices along cannot measure any broad continuum features in the spectra of Ap stars. The indices Delta C(J) make it possible to show that stars belonging to the group Si, Sr-Cr, and Sr-Cr-Eu exhibit an increase of their line blocking with the increase of the rotational period.
- Publication:
-
Liege International Astrophysical Colloquia
- Pub Date:
- 1981
- Bibcode:
- 1981LIACo..23...39G
- Keywords:
-
- A Stars;
- B Stars;
- Peculiar Stars;
- Stellar Spectrophotometry;
- Absorption Spectra;
- Continuous Spectra;
- Stellar Color;
- Stellar Rotation;
- Stellar Spectra;
- Astronomy