Cited by 1,553Stellar, planetary, and galactic studiesAstronomy and Astrophysical ResearchGalaxies: Formation, Evolution, Phenomena

Evolution of asymptotic giant branch stars: II. Optical to far-infrared isochrones with improved TP-AGB models

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Marigo, P., Girardi, L., Bressan, A., Groenewegen, M. A. T., Silva, L., Granato, G. L.·2008·Astronomy & Astrophysics

Abstract

We present a large set of theoretical isochrones, whose distinctive features mostly reside on the greatly-improved treatment of the thermally-pulsing asymptotic giant branch (TP-AGB) phase. Essentially, we have coupled the TP-AGB tracks described in Paper I, at their stages of pre-flash quiescent H-shell burning, with the evolutionary tracks for the previous evolutionary phases from Girardi et al. (2000, A&AS, 141, 371). Theoretical isochrones for any intermediate value of age and metallicity are then derived by interpolation in the grids. We take care that the isochrones keep, to a good level of detail, the several peculiarities present in these TP-AGB tracks – e.g., the cool tails of C-type stars owing to the use of proper molecular opacities as convective dredge-up occurs along the TP-AGB; the bell-shaped sequences in the Hertzsprung-Russell (HR) diagram for stars with hot-bottom burning; the changes of pulsation mode between fundamental and first overtone; the sudden changes of mean mass-loss rates as the surface chemistry changes from M- to C-type; etc. Theoretical isochrones are then converted to about 20 different photometric systems – including traditional ground-based systems, and those of recent major wide-field surveys such as SDSS, OGLE, DENIS, 2MASS, UKIDSS, etc., - by means of synthetic photometry applied to an updated library of stellar spectra, suitably extended to include C-type stars. Finally, we correct the predicted photometry for the effect of circumstellar dust during the mass-losing stages of the AGB evolution, which allows us to improve the results for the optical-to-infrared systems, and to simulate mid- and far-IR systems such as those of Spitzer and AKARI. We illustrate the most striking properties of these isochrones by means of basic comparisons with observational data for the Milky Way disc and the Magellanic Clouds. Access to the data is provided both via a web repository of static tables (http://stev.oapd.inaf.it/dustyAGB07 and CDS), and via an interactive web interface (http://stev.oapd.inaf.it/cmd), which provides tables for any intermediate value of age and metallicity, for several photometric systems, and for different choices of dust properties.

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Crossref · 10.1051/0004-6361:20078467

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  • They repeated the entire SFH fitting for a representative subset of roughly one third of their regions using MIST isochrones in place of Padova tracks.

    “To assess the impact of these model choices in PHAST, we repeated the entire SFH fitting for a representative subset consisting of roughly a third of our regions using the MIST (Choi et al. 2016) isochrones in place of the Padova (Marigo et al. 2008; Girardi et al. 2010) tracks.”

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Authors
Marigo, P., Girardi, L., Bressan, A., Groenewegen, M. A. T., Silva, L., & Granato, G. L.
Affiliations
  • University of Padua (IT)
  • Osservatorio Astronomico di Padova (IT)
  • National Institute of Astrophysics, Optics and Electronics (MX)
  • KU Leuven (BE)
  • Trieste Astronomical Observatory (IT)
Corresponding author
Marigo, P.
Venue
Astronomy & Astrophysics
Publisher
EDP Sciences
Published
2008-03-04
Volume
482
Issue
3
Pages
883-905
ISSN
  • 0004-6361 (ISSN-L)
  • 1432-0746
OpenAlex
W4295004167
Cited by
1,553
References
2
Citations by year
2026: 20 · 2025: 44 · 2024: 34 · 2023: 39 · 2022: 37 · 2021: 51 · 2020: 39 · 2019: 51 · 2018: 66 · 2017: 66 · 2016: 122 · 2015: 119 · 2014: 116 · 2013: 130 · 2012: 186
FWCI
84.15
Type
journal article
Language
en
Open access
Locations
  • Astronomy and Astrophysics (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • SDL (submittedVersion, other-oa)
  • Springer Link (Chiba Institute of Technology) (submittedVersion)
  • Padua Research Archive (University of Padova) (submittedVersion, cc-by)
  • arXiv (Cornell University)
Funders
Università degli Studi di Padova
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Instrumentation › Astronomy and Astrophysical Research
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
Keywords
asymptotic giant branch stars, stellar isochrones, evolutionary tracks, hot bottom burning, mass loss, pulsation modes, circumstellar dust, synthetic photometry, photometric systems, Galactic disk, Magellanic Clouds, Hertzsprung-Russell diagram

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