{
  "id": "0902.0571",
  "version": "v1",
  "published": "2009-02-03T18:23:30.000Z",
  "updated": "2009-02-03T18:23:30.000Z",
  "title": "The Chemical Evolution of Globular Clusters I. Reactive Elements and Non-Metals",
  "authors": [
    "Andrea Marcolini",
    "Brad K. Gibson",
    "Amanda I. Karakas",
    "Patricia Sanchez-Blazquez"
  ],
  "comment": "Accepted for publication in MNRAS",
  "doi": "10.1111/j.1365-2966.2009.14591.x",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We propose a new chemical evolution model aimed at explaining the chemical properties of globular clusters (GC) stars. Our model depends upon the existence of (i) a peculiar pre-enrichment phase in the GC's parent galaxy associated with very low-metallicity Type II supernovae (SNeII), and (ii) localized inhomogeneous enrichment from a single Type Ia supernova (SNeIa) and intermediate-mass (4 7Msun) asymptotic giant branch (AGB) field stars. GC formation is then assumed to take place within this chemically-peculiar region. Thus, in our model the first low-mass GC stars to form are those with peculiar abundances (i.e., O-depleted and Na-enhanced) while ``normal'' stars (i.e., O-rich and Na depleted) are formed in a second stage when self-pollution from SNeII occurs and the peculiar pollution from the previous phase is dispersed. In this study, we focus on three different GCs: NGC6752, NGC6205 (M13) and NGC2808. We demonstrate that, within this framework, a model can be constructed which is consistent with (i) the elemental abundance anti-correlations, (ii) isotopic abundance patterns, and (iii) the extreme [O/Fe] values observed in NGC2808 and M13, without violating the global constraints of approximately unimodal [Fe/H] and C+N+O.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-02-03T18:23:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "globular clusters",
      "chemical evolution",
      "reactive elements",
      "first low-mass gc stars",
      "non-metals"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Wiley-Blackwell",
      "journal": "Monthly Notices of the Royal Astronomical Society",
      "year": 2009,
      "month": "May",
      "volume": 395,
      "number": 2,
      "pages": 719
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 812468,
      "adsabs": "2009MNRAS.395..719M"
    }
  }
}