PARSEC V2.0: Stellar tracks and isochrones of low and intermediate mass stars with rotation
Journal
Date Issued
2022
Author(s)
Nguyen, C. T.
•
Costa, G.
•
•
Volpato, G.
•
Bressan, A.
•
Chen, Y.
•
Marigo, P.
•
Fu, X.
•
Goudfrooij, P.
Abstract
We present a new comprehensive collection of stellar evolutionary tracks and
isochrones for rotating low- and intermediate-mass stars assembled with the
updated version of PARSEC V2.0. This version includes our recent calibration of
the extra mixing from overshooting and rotation, as well as several
improvements in nuclear reaction network, treatment of convective zones, mass
loss and other physical input parameters. The initial mass of the stellar
models covers the range from 0.09 $M_\odot$ to 14 $M_\odot$, for six sets of
initial metallicity, from Z=0.004 to Z=0.017. Rotation is considered for stars
above $\sim 1 M_\odot$ with a smooth transition between non rotating and
extremely fast-rotating models, based on the initial mass. For stars more
massive than $\sim 1.3~M_\odot$ the full rotation range, from low to the
critical one, is considered. We adopt the solar-scaled chemical mixture by
Caffau et al. with Z$_\odot$ = 0.01524. All the evolutionary phases from the
pre-main-sequence to the first few thermal-pulses on the
asymptotic-giant-branch or central C exhaustion, are considered. The
corresponding theoretical isochrones are further derived with TRILEGAL code and
are converted in several photometric systems, taking into account different
inclination angles. Besides magnitudes, they also offer many other stellar
observables in line with the data that are being provided by current large
surveys. The new collection is fully integrated in a user friendly WEB
interface for the benefit of easily performing stellar population studies.
Volume
665
Start page
A126
Issn Identifier
0004-6361
Rights
open.access
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