| Issue |
Astron. Astrophys. Suppl. Ser.
Volume 124, Number 1, July 1997
|
|
|---|---|---|
| Page(s) | 143 - 151 | |
| DOI | https://doi.org/10.1051/aas:1997184 | |
| Published online | 15 July 1997 | |
Mean light curves of long-period variables and discrimination between carbon- and oxygen-rich stars*
1
Université Montpellier II, Groupe de Recherche en Astronomie et Astrophysique du Languedoc, Unité associée au CNRS, F-34095 Montpellier Cedex 5, France
2
Université des Sciences El Jadida, Maroc
3
American Association of Variable Star Observers, 25 Birch Street, Cambridge, Massachusetts 02138-1205, U.S.A.
Received:
13
September
1996
Accepted:
16
November
1996
Abstract
Using 75 years of AAVSO data, mean light curve parameters of a sample of 355 long period M, S, and C mira and semi-regular variable stars are investigated. We present a classification of the light curves of LPVs into 6 distinct groups. Combining this classification with IRAS colors makes it possible to distinguish oxygen-rich from carbon-rich miras.
Key words: stars: AGB, post-AGB / methods: data analysis / stars: carbon / stars: variables
Table 2 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html
© European Southern Observatory (ESO), 1997