PARAM 1.0 input form

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Stellar observables

Enter with the stellar observed parameters together with their 1σ errors (here assumed to be Gaussian):
Name
Teff=± K
[Fe/H]=± dex
V=± mag
parallax=± mas

Note: the following options are still very limited, and in principle do not need to be changed. More alternatives will be added soon.

Evolutionary tracks

Basic set: Girardi et al. 2000 + simplified TP-AGB (for M≤7M☉) + Bertelli et al. 1994 (for M>7M☉) + additional Z=0.0001 and Z=0.001 tracks. Isochrones are available for all 0.0001≤Z≤0.03, and ages from 0 to 17 Gyr, in the range 0.15≤M/M☉<100.

Bayesian priors

IMF for single stars: Salpeter (1955) with cutoff at 0.01 M☉ Chabrier (2001) exponential Chabrier (2001) lognormal Kroupa (1998) corrected for binaries Kroupa (1998) non corrected for binaries
Star Formation Rate: constant

in the age interval from yr to yr

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This service is mantained by Léo Girardi at the Osservatorio Astronomico di Padova.
Questions, comments and special requests should be directed to leo.girardi@oapd·inaf·it .
Last modified: Mon Mar 24 16:11:42 2008