{
  "id": "1411.3126",
  "version": "v1",
  "published": "2014-11-12T10:29:47.000Z",
  "updated": "2014-11-12T10:29:47.000Z",
  "title": "Calibrating the role of TP-AGB stars in the cosmic matter cycle",
  "authors": [
    "Paola Marigo"
  ],
  "comment": "Invited review at the conference \"Why Galaxies Care About AGB Stars III\", July 28 - August 1, 2014, Vienna, (eds. F. Kerschbaum, J. Hron, and B. Wing), to appear in the ASP Conference Series; 10 pages, 10 postscript figures",
  "categories": [
    "astro-ph.SR",
    "astro-ph.GA"
  ],
  "abstract": "In the last ten years three main facts about the thermally pulsing asymptotic giant branch (TP-AGB) have become evident: 1) the modelling of the TP-AGB phase is critical for the derivation of basic galaxy properties (e.g. mass and age) up to high redshift, with consequent cosmological implications; 2) current TP-AGB calibrations based on Magellanic Cloud (MC) clusters come out not to work properly for other external galaxies, yielding a likely TP-AGB overestimation; 3) the significance of the TP-AGB contribution in galaxies, hence their derived properties, are strongly debated, with conflicting claims in favour of either a heavy or a light TP-AGB. The only way out of this condition of persisting uncertainty is to perform a reliable calibration of the TP-AGB phase as a function of the star's initial mass (hence age) over a wide range of metallicity, from very low to super-solar values. In this context, I will review recent advancements and ongoing efforts towards a physically-sound TP-AGB calibration that, moving beyond the classical use of the MC clusters, combines increasingly refined TP-AGB stellar models with exceptionally high-quality data for resolved TP-AGB stars in nearby galaxies. Preliminary results indicate that a sort of \"TP-AGB island\" emerges in the age-metallicity plane, where the contribution of these stars is especially developed, embracing preferentially solar- and MC-like metallicities, and intermediate ages (~ few Gyr).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-11-12T10:29:47.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cosmic matter cycle",
      "tp-agb stars",
      "refined tp-agb stellar models",
      "pulsing asymptotic giant branch",
      "tp-agb phase"
    ],
    "tags": [
      "conference paper",
      "review article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015ASPC..497..229M"
    }
  }
}