PARSEC V2.0: Rotating tracks and isochrones for seven additional metallicities in the range <i>Z</i> = 0.0001–0.03

PARSEC v2.0 rotating stellar tracks were previously presented for six metallicity values from subsolar to solar values, with initial rotation rates ( ω i , defined as the ratio of the angular velocity and its critical value) spanning from the non-rotating case to very near the critical velocity (i.e. ω i = 0.99), and for initial masses covering the ∼0.7 M ⊙ to 14 M ⊙ interval. Furthermore, we provided the corresponding isochrones converted into several photometric systems for different inclination angles between the line-of-sight and the rotation axes, from 0° (pole-on) to 90° (equator-on). In this work, we expand this database with seven other metallicity sets, including five sets of low metallicity ( Z = 0.0001 − 0.002) and two sets of super-solar values (up to Z = 0.03). We present the new stellar tracks, which comprise ∼3040 tracks in total (∼5500 including previous sets), along with the new corresponding rotating isochrones. We also introduce the possibility of creating isochrones by interpolation for values of rotating rates that were not available in the initial set of tracks. We compared a selection of our new models with rotating stellar tracks from the Geneva Stellar Evolution Code, and we assessed the quality of our new tracks by fitting the colour-magnitude diagram of the open cluster NGC 6067. We took advantage of the projected rotational velocity of member stars measured by Gaia to validate our results and examined the surface oxygen abundances in comparison with the observed data. All newly computed stellar tracks and isochrones can be retrieved via our dedicated web databases and interfaces.

Authors

Publication Details

Journal
Astronomy and Astrophysics
Published
2025-08-26
DOI
https://doi.org/10.1051/0004-6361/202556005
Citations
1
Primary Topic
High-pressure geophysics and materials
Type
article
Field-Weighted Citation Impact
1.87

Funders

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article

PARSEC V2.0: Rotating tracks and isochrones for seven additional metallicities in the range Z = 0.0001–0.03

G. Cescutti, Kendall Shepherd, A. Bressan, C.T. Nguyen et al.
1 citations
Astronomy and Astrophysics
High-pressure geophysics and materials
1.87
article

PARSEC V2.0: Rotating tracks and isochrones for seven additional metallicities in the range Z = 0.0001–0.03

G. Cescutti, Kendall Shepherd, A. Bressan, C.T. Nguyen, A. J. Korn, L. Girardi, M. Trabucchi, Guglielmo Costa, S. Zaggia, Giada Pastorelli, Guglielmo Volpato, Yang Chen, Greta Ettorre
article en
1 citations

Abstract

PARSEC v2.0 rotating stellar tracks were previously presented for six metallicity values from subsolar to solar values, with initial rotation rates ( ω i , defined as the ratio of the angular velocity and its critical value) spanning from the non-rotating case to very near the critical velocity (i.e. ω i = 0.99), and for initial masses covering the ∼0.7 M ⊙ to 14 M ⊙ interval. Furthermore, we provided the corresponding isochrones converted into several photometric systems for different inclination angles between the line-of-sight and the rotation axes, from 0° (pole-on) to 90° (equator-on). In this work, we expand this database with seven other metallicity sets, including five sets of low metallicity ( Z = 0.0001 − 0.002) and two sets of super-solar values (up to Z = 0.03). We present the new stellar tracks, which comprise ∼3040 tracks in total (∼5500 including previous sets), along with the new corresponding rotating isochrones. We also introduce the possibility of creating isochrones by interpolation for values of rotating rates that were not available in the initial set of tracks. We compared a selection of our new models with rotating stellar tracks from the Geneva Stellar Evolution Code, and we assessed the quality of our new tracks by fitting the colour-magnitude diagram of the open cluster NGC 6067. We took advantage of the projected rotational velocity of member stars measured by Gaia to validate our results and examined the surface oxygen abundances in comparison with the observed data. All newly computed stellar tracks and isochrones can be retrieved via our dedicated web databases and interfaces.

Astronomy and AstrophysicsVol. 701
European Commission, National Natural Science Foundation of China, Swedish National Space Agency, Università degli Studi di Padova
Openalex Percentile: Top 15%
High-pressure geophysics and materials
1.87
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