{
  "id": "1111.6373",
  "version": "v1",
  "published": "2011-11-28T08:47:12.000Z",
  "updated": "2011-11-28T08:47:12.000Z",
  "title": "The importance of nebular emission for SED modeling of distant star-forming galaxies",
  "authors": [
    "Daniel Schaerer",
    "Stephane de Barros"
  ],
  "comment": "To appear in IAU Symp. 284, The Spectral Energy Distribution of Galaxies, Preston (UK), September 2011, eds. R. J. Tuffs and C. C. Popescu",
  "categories": [
    "astro-ph.CO",
    "astro-ph.GA"
  ],
  "abstract": "We highlight and discuss the importance of accounting for nebular emission in the SEDs of high redshift galaxies, as lines and continuum emission can contribute significantly or subtly to broad-band photometry. Physical parameters such as the galaxy age, mass, star-formation rate, dust attenuation and others inferred from SED fits can be affected to different extent by the treatment of nebular emission. We analyse a large sample of Lyman break galaxies from z~3-6, and show some main results illustrating e.g. the importance of nebular emission for determinations of the mass-SFR relation, attenuation and age. We suggest that a fairly large scatter in such relations could be intrinsic. We find that the majority of objects (~60-70%) is better fit with SEDs accounting for nebular emission; the remaining galaxies are found to show relatively weak or no emission lines. Our modeling, and supporting empirical evidence, suggests the existence of two categories of galaxies, \"starbursts\" and \"post-starbursts\" (lower SFR and older galaxies) among the LBG population, and relatively short star-formation timescales.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-11-28T08:47:12.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "nebular emission",
      "distant star-forming galaxies",
      "importance",
      "sed modeling",
      "high redshift galaxies"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1017/S1743921312008630"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 963457,
      "adsabs": "2012IAUS..284...20S"
    }
  }
}