| Issue |
A&A
Volume 392, Number 2, September III 2002
|
|
|---|---|---|
| Page(s) | 529 - 533 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20020962 | |
| Published online | 30 August 2002 | |
A calibration of the 85 Peg binary system
1
Observatório Astronómico da Universidade de Coimbra, Santa Clara, 3040 Coimbra, Portugal and Departamento de Matemática da Faculdade de Ciências e Tecnologia da Universidade de Coimbra, Portugal
2
Département Cassini, UMR CNRS 6529, Observatoire de la Côte d'Azur, BP 4229, 06304 Nice Cedex 4, France
3
GEPI, Observatoire de Paris Meudon, 92195 Meudon, France
Corresponding author: J. Fernandes, jmfernan@mat.uc.pt
Received:
28
September
2001
Accepted:
11
June
2002
We have calibrated the
initial abundances, age and mixing-length parameters
of the visual binary system 85 Pegasi. We obtain an age
Myr, masses
and
,
an initial helium mass fraction 
,
an initial metallicity ![$\rm[\frac{Fe}H]_i=-0.185\pm0.054$](/articles/aa/abs/2002/35/aa1948/aa1948_tex_eq5.png)
and mixing-length parameters 
and
. We find that, as already proposed, 85 Peg B is itself
a binary.
The mass of the unseen companion is
.
Key words: stars: binaries: visual / stars: evolution / stars: fundamental parameters / stars: individual: 85 Peg
© ESO, 2002
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.