{
  "id": "astro-ph/9509065",
  "version": "v1",
  "published": "1995-09-12T16:52:23.000Z",
  "updated": "1995-09-12T16:52:23.000Z",
  "title": "The Case Against Bimodal Star Formation in Elliptical Galaxies",
  "authors": [
    "Brad K. Gibson"
  ],
  "comment": "11 pages of uuencoded compressed PostScript. Accepted for publication in MNRAS",
  "journal": "Mon.Not.Roy.Astron.Soc. 278 (1996) 829",
  "categories": [
    "astro-ph"
  ],
  "abstract": "We consider the present-day photometric and chemical properties of elliptical galaxies, adopting the bimodal star formation scenario of Elbaz, Arnaud & Vangioni-Flam (1995). These models utilise an initial mass function (IMF) biased heavily toward massive stars during the early phases of galactic evolution, leading to early Type II supernovae-driven galactic winds. A subsequent lengthy, milder, star formation phase with a normal IMF ensues, responsible supposedly for the stellar population observed today. Based upon chemical evolution arguments alone, this scenario has been invoked to explain the observed metal mass, and their abundance ratios, in the intracluster medium of galaxy clusters. Building upon the recent compilations of metallicity-dependent isochrones for simple stellar populations, we have constructed a coupled photometric and chemical evolution package for composite stellar populations in order to quantify the effects of such a model upon the photo-chemical properties of the resultant elliptical galaxies. We demonstrate that these predicted properties are incompatible with those observed at the current epoch.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1995-09-12T16:52:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "elliptical galaxies",
      "bimodal star formation scenario",
      "composite stellar populations",
      "chemical evolution",
      "simple stellar populations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1093/mnras/278.3.829"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 399359
    }
  }
}