EDP Sciences
Free access
Issue
A&A
Volume 370, Number 1, April IV 2001
Page(s) 194 - 217
Section Formation, structure and evolution of stars
DOI http://dx.doi.org/10.1051/0004-6361:20000247


A&A 370, 194-217 (2001)
DOI: 10.1051/0004-6361:20000247

Chemical yields from low- and intermediate-mass stars: Model predictions and basic observational constraints

P. Marigo

Dipartimento di Astronomia, Università di Padova, Vicolo dell'Osservatorio 2, 35122 Padova, Italia

(Received 14 September 2000 / Accepted 5 December 2000)

Abstract
In this work we analyse the role of low- and intermediate-mass stars in contributing to the chemical enrichment of the interstellar medium. First we present new sets of stellar yields basing on the results of updated evolutionary calculations, which extend from the ZAMS up to the end of the AGB phase (Girardi et al. 2000; Marigo et al. 1999). These new yields, that present a significant dependence on metallicity, are then compared to those of other available sets (Renzini & Voli 1981; van de Hoek & Groenewegen 1997). The resulting differences are explained in terms of different model assumptions -i.e. treatment of convective boundaries, mass loss, dredge-up, hot-bottom burning - and further discussed on the basis of important empirical constraints which should be reproduced by theory -i.e. the initial-final mass relation, white dwarf mass distribution, carbon star luminosity function, and chemical abundances of planetary nebulae. We show that present models are able to reproduce such constraints in a satisfactory way.


Key words: stars: evolution -- stars: AGB and post-AGB -- stars: mass-loss -- planetary nebulae: general -- ISM: abundances -- galaxies: abundances

Offprint request: P. Marigo, marigo@pd.astro.it

SIMBAD Objects



© ESO 2001

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.