This program allows you to compute any isochrone and/or the ZAMS position for pre-main and main sequence stars
To proceed, select the metallicity
and mass tracks
and then specify the age
. The results will be displayed on the screen and can be saved by typing Alt + S.
They include the stellar mass, age, radius, luminosity, and effective temperature as well as some colors.
To convert the effective temperatures resulting from our models to colors, you have the choice to use the conversion table presented in Kenyon and Hartmann (1995, Astrophys. J. Suppl. Series 101
, 117) or the one compiled by Siess et al.
(1997, Astron. Astrophys. 324
, 556). Note that in the latter case, only the B,V,R and I magnitudes are available. The colors are expressed in the Cousins
When the selected age for the isochrone is greater than the age of the last computed model, we take this last value in our files. This is indicated by flag
= 1 (0 by default). When the colors are extrapolated out of the tables, this is indicated by check
= 1 (0 by default).
Reference to be mentioned:
Siess L., Dufour E., Forestini M. 2000, A&A, 358
, 593 PDF