Issue |
Astron. Astrophys. Suppl. Ser.
Volume 141, Number 3, February I 2000
|
|
---|---|---|
Page(s) | 371 - 383 | |
DOI | https://doi.org/10.1051/aas:2000126 | |
Published online | 15 February 2000 |
Evolutionary tracks and isochrones for
low- and intermediate-mass stars: From 0.15 to 7
,
and from
to 0.03
1
Dipartimento di Astronomia, Università di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
2
Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85740 Garching bei München, Germany
3
Instituto de Física, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, 91501-970 Porto Alegre RS, Brazil
4
Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova, Italy
5
Consiglio Nazionale delle Ricerche (CNR), Italy
Send offprint request to: L. Girardi, e-mail: Lgirardi@pd.astro.it
Received:
17
June
1999
Accepted:
29
October
1999
We present a large grid of stellar evolutionary tracks, which are
suitable to modelling star clusters and galaxies by means of
population synthesis. The tracks are presented for the initial
chemical compositions ,
,
,
,
(solar composition), and
. They are computed with updated opacities and
equation of state, and a moderate amount of convective overshoot. The
range of initial masses goes from
to
,
and the evolutionary phases extend from the zero age main sequence
(ZAMS) till either the thermally pulsing AGB regime or carbon
ignition. We also present an additional set of models with solar
composition, computed using the classical Schwarzschild criterion
for convective boundaries. From all these tracks, we derive the
theoretical isochrones in the Johnson-Cousins UBVRIJHK broad-band
photometric system.
Key words: stars: evolution / stars: interiors / stars: Hertz sprung–Russell (HR) diagram / stars: low-mass
© European Southern Observatory (ESO), 2000