Y2 (Yonsei-Yale) Stellar Models
Paper 1: Yi, Demarque, Kim, Lee, Ree, Lejeune, &Barnes 2001, ApJS, 136, 417
Paper 2: Kim, Demarque, Yi, & Alexander 2002, ApJS, 143, 499
Paper 3: Yi, Kim, & Demarque 2003, ApJS, 144, 259
Paper 4: Demarque, Woo, Kim, & Yi 2004, ApJS, 155, 667
We present a database of the latest stellar models
of the $Y^2$ (Yonsei-Yale) collaboration.
This database contains the stellar evolutionary tracks
from the pre-main-sequence birthline to the helium core flash that were
used to build Y2 Isochrones.
We also provide a simple interpolation routine that generates
stellar tracks for given sets of parameters (metallicity, mass, and
(20 October 2004)
Note that the NEW tracks based on the new Overshoot scheme (Demarque et
al. 2004) are now available. We now have a ramping treatment for
the value of the convective core overshoot (that is, OS=0.0 for M<Mcrit, OS=0.05 for M=Mcrit,
OS=0.1 for M=Mcrit+0.1, OS=0.15 for M=Mcrit+0.2, OS=0.2 for
M>Mcrit+0.2), where Mcrit is the mass at and above which a star
develops a convective core. This NEW version should
be preferred to the OLD one. The interpolation routine works for both
Download The NEW whole Stellar Models for [a/Fe]=0.0.
Download The NEW whole Stellar Models for [a/Fe]=+0.3.
Download The NEW whole Stellar Models for [a/Fe]=+0.6.
this updated version
of the interpolation routine for the
tracks (in mass, Z, [a/Fe]).
One should use this updated version rather than the one included together with the tracks.
Download the version 1 full set and the original interpolation program of the YY Stellar evolutionary tracks.
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