| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 128, Number 2, March I 1998
|
|
|---|---|---|
| Page(s) | 265 - 275 | |
| DOI | https://doi.org/10.1051/aas:1998140 | |
| Published online | 15 March 1998 | |
CP2 stars as viewed by the 
system*
1
Departament d'Astronomia i Meteorologia, Universitat de Barcelona, Avda. Diagonal 647, E-08028 Barcelona, Spain
2
Institut für Astronomie, Universität Wien, Türkenschanzstra$\beta$e 17, A-1180 Wien, Austria
Send offprint request to: E. Masana
Received:
26
March
1997
Accepted:
21
July
1997
The aim of this work is to study the capacity of the 
system
for detecting the chemically peculiar (CP) stars based on the effect that
peculiar features in the flux distribution have on
all the Strömgren-Crawford indices.
Our study focuses on the
classical magnetic peculiar stars (CP2), though Am stars
(CP1) are also included for comparison with cool CP2 stars.
Satisfactory results were obtained for hot CP2 stars: the definition of
a new index p, which is a linear combination of colours,
allowed us to
separate a high percentage of hot CP2 stars from normal stars.
According to this new index, 60 new CP2 candidates are proposed.
The working sample was extracted from The General Catalogue of
Ap and Am stars by Renson et al. (1991). Photometric
observations to enlarge the sample of CP2 stars with complete 
photometry were carried out. These observations are also reported
in the present paper.
The new index p is also used to
correct the reddening of early CP2 stars computed as if they were normal stars.
Key words: stars: chemically peculiar / stars: fundamental parameters / stars: early type
© European Southern Observatory (ESO), 1998