Evolution of asymptotic giant branch stars. I. Updated synthetic TP-AGB models and their basic calibration

By P. Marigo, L. V. A. Department, U. Padova, Italy., Astronomical Observatory of Padova, -INAF. 2007

341 citations recorded by the source corpus.

We present new synthetic models of the TP-AGB evolution. They are computed for 7 values of initial metal content (Z from 0.0001 to 0.03) and for initial masses between 0.5 and 5.0 M� , thus extending the low- and intermediate-mass tracks of Girardi et al. (2000) to the beginning of the post-AGB phase. The calculations are performed by means of a synthetic code that incorporates many recent improvements, among which we mention: (1) the use of detailed and revised analytical relations to describe the evolution of quiescent luminosity, inter-pulse period, third dredge-up, hot bottom burning, pulse cycle luminosity variations, etc.; (2) the use of variable molecular opacities – i.e. opacities consistent with the changing photospheric chemical composition – in the integration of a complete envelope model, instead of the standard choice of scaled-solar opacities; (3) the use of formalisms for the mass-loss rates derived from pulsating dust-driven wind models of C- and O-rich AGB stars; and (4) the switching of pulsation modes between the first overtone and the fundamental one along the evolution, which has consequences in terms of the history of mass loss. It follows that, in addition to the time evolution on the HR diagram, the new models also consistently predict variations in surface chemical compositions, pulsation modes and periods, and mass-loss rates. The onset and efficiency of the third dredge-up process are calibrated in order to reproduce basic observables like the carbon star luminosity functions in the Magellanic Clouds and TP-AGB lifetimes (star counts) in Magellanic Cloud clusters. In this first paper, we describe in detail the model ingredients, basic properties, and calibration. Particular emphasis is put on illustrating the effects of using variable molecular opacities. Forthcoming papers will present the theoretical isochrones and chemical yields derived from these tracks and additional tests performed with the aid of a complete population synthesis code.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/a82fe6c4d10b67f29587c8b50d03b3e2c5deca9a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

Citations in the corpus

DUST OBSCURATION AND METALLICITY AT HIGH REDSHIFT: NEW INFERENCES FROM UV, Hα, AND 8 μm OBSERVATIONS OF z ∼ 2 STAR-FORMING GALAXIES (2010, methodology): “Here, we update these results using the latest models of Charlot & Bruzual (in prep; CB08) that include the Marigo & Girardi (2007) prescription for the thermally-pulsating AGB (TP-AGB) evolution of low- and intermediate-mass stars.”
A NEW GENERATION OF PARSEC-COLIBRI STELLAR ISOCHRONES INCLUDING THE TP-AGB PHASE (2017, methodology): “This feature is determined by the maximum TP-AGB lifetimes being reached for stars of initial masses in the range 1.5 to 2 M (Marigo et al. 2003; Marigo & Girardi 2007).”
parsec: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code (2012, methodology): “Although we can ensure a quick initial calibration of the TP-AGB phase following the procedure defined by Marigo & Girardi (2007), a thoroughful calibration may require a significant time before completion.”
The Tully-Fisher relations of early-type spiral and S0 galaxies (2010, methodology): “We assume solar metallicity and a Chabrier initial mass function (Chabrier 2003) and use an updated prescription for the thermally-pulsing asymptotic giant branch (Marigo & Girardi 2007; Charlot 2009, pri- c© 2010 RAS, MNRAS 000, 1–17 vate communication).”
The global gas and dust budget of the Large Magellanic Cloud: AGB stars and supernovae, and the impact on the ISM evolution (2009, result): “This is consistent with the stellar evolution model by Marigo & Girardi (2007), who showed that the superwind phase (with massloss rate higher than 5.6 × 10−7 M yr−1) lasts less than 15 per cent of the thermal-pulsing lifetime for carbon stars.”
Origin of multiple stellar populations in globular clusters and their helium enrichment (2008, methodology): “In this respect, the schematic AGB evolution adopted here differs from AGB models existing in the literature (e.g. Renzini & Voli 1981; Groenewegen & de Jong 1993; Herwig 2004; Izzard et al. 2004; Ventura & D’Antona 2005, 2008; Marigo & Girardi 2007).”
Gaia broad band photometry (2010, background): “Marigo & Girardi (2007) and Marigo et al. (2008) included an updated modelling of the AGB phase.”
Fitting the integrated spectral energy distributions of galaxies (2010, background): “Attention has been focused on these stars since Maraston (2005) raised this issue, leading to rapid progress in the modelling (Marigo and Girardi 2007), largely reducing these differences in the broad-band photometry.”
Tracking the impact of environment on the galaxy stellar mass function up to z ~ 1 in the 10 k zCOSMOS sample (2009, background): “CB07 models include the prescription of Marigo & Girardi (2007) for the TP-AGB evolution of low and intermediate-mass stars.”
Scaled solar tracks and isochrones in a large region of the Z-Y plane. II. From 2.5 to 20 solar masses (2009, methodology): “An important update of this database is the extension of stellar models and isochrones until the end of the TP-AGB phase by means of synthetic models, using the same relations as in Marigo & Girardi (2007).”
THE CHARACTERISTIC STAR FORMATION HISTORIES OF GALAXIES AT REDSHIFTS z ∼ 2–7 (2012, methodology): “The latest solar metallicity models of S. Charlot & G. Bruzual (in preparation, hereafter CB11) that include the Marigo & Girardi (2007) prescription for the thermally-pulsating Asymptotic Giant Branch (TP-AGB) evolution of low- and intermediatemass stars are used in the fitting.”
CONFIRMATION OF FAINT DWARF GALAXIES IN THE M81 GROUP (2013, methodology): “We also choose detailed AGB tracks from Marigo & Girardi (2007).”
NUGRID STELLAR DATA SET. I. STELLAR YIELDS FROM H TO BI FOR STARS WITH METALLICITIES Z = 0.02 and Z = 0.01 (2013, background): “This choice is also motivated by stellar observations, including counts of C- and O-rich stars in the Magellanic Clouds (e.g. Marigo & Girardi 2007), which together indicate that the C-rich phase cannot last for more than at most a dozen thermal pulses.”
Scaled solar tracks and isochrones in a large region of the Z-Y plane I. From the ZAMS to the TP-A (2008, methodology): “An important update of this database is the extension of stellar models and isochrones until the end of the TP-AGB by means of new synthetic models (cf. Marigo & Girardi 2007).”
PRIMUS: CONSTRAINTS ON STAR FORMATION QUENCHING AND GALAXY MERGING, AND THE EVOLUTION OF THE STELLAR MASS FUNCTION FROM z = 0–1 (2013, methodology): “We couple these models to the Padova46 stellar evolutionary isochrones (Girardi et al. 2000; Marigo & Girardi 2007; Marigo et al. 2008), which have been supplemented with the Vassiliadis & Wood (1994) models for post-AGB stars.”
EVOLUTION, NUCLEOSYNTHESIS, AND YIELDS OF LOW-MASS ASYMPTOTIC GIANT BRANCH STARS AT DIFFERENT METALLICITIES (2009, methodology): “More recently, two groups (Stancliffe et al. 2005; Marigo & Girardi 2007) stated to have 19Note that none of the models presented in this paper suffers for Hot Bottom Burning.”
A CATALOG OF BULGE, DISK, AND TOTAL STELLAR MASS ESTIMATES FOR THE SLOAN DIGITAL SKY SURVEY (2013, methodology): “Girardi et al. (2010) show that the evolutionary tracks of Marigo & Girardi (2007) may overestimate the frequency of AGB stars by factors of 3–7, naively suggesting that at Δ log L of −0.3 to −0.8 may be necessary to match the observed data, within the range of the FSPS calibration.”
A simple model to interpret the ultraviolet, optical and infrared emission from galaxies (2008, methodology): “We use the most recent version of the code, which incorporates a new prescription by Marigo & Girardi (2007) for the TP-AGB evolution of lowand intermediate-mass stars.”