| Issue |
A&A
Volume 372, Number 2, June III 2001
|
|
|---|---|---|
| Page(s) | 588 - 593 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20010532 | |
| Published online | 15 June 2001 | |
uvby light curves of the eclipsing binary system V2154 Cyg*
1
Instituto de Astrofísica de Andalucía, CSIC, PO Box 3004, 18080 Granada, Spain
2
Departamento de Física, E.U.I.T. Industriales, UPM, Ronda de Valencia 3, 28012 Madrid, Spain
Corresponding author: E. Rodríguez, eloy@iaa.es
Received:
29
September
2000
Accepted:
6
April
2001
This paper presents complete uvby light curves for the recently
discovered eclipsing binary system V2154 Cyg. Additional Crawford H
data were also obtained. Three times of primary minima and two secondary
minima are determined. An improved orbital period is found to be 2
6306312.
A detailed photometric analysis is made using the EBOP code. This
eclipsing
binary is probably one of the components of a much wider double star, forming
altogether a triple system. The results show that the eclipsing pair is a
detached system with two late-type stars very different in
size. Masses of about 
and 
are
inferred for the components by using stellar evolution models. The total
mass of the probable triple system is estimated to be of about
3.5 
, leading to a minimum orbital period of about 140 yr for the
visual pair.
Key words: stars: binaries: eclipsing / stars: individual: V2154 Cyg / stars: fundamental parameters / techniques: photometric
© ESO, 2001
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