{
  "id": "1811.10579",
  "version": "v1",
  "published": "2018-11-26T18:35:53.000Z",
  "updated": "2018-11-26T18:35:53.000Z",
  "title": "The Mass-to-light Ratios and the Star Formation Histories of Disk Galaxies",
  "authors": [
    "J. Schombert",
    "S. McGaugh",
    "F. Lelli"
  ],
  "comment": "17 pages, 12 figures, accepted by MNRAS",
  "categories": [
    "astro-ph.GA"
  ],
  "abstract": "We combine new data from the main sequence (M_* versus SFR) of star-forming galaxies and galaxy colors (from GALEX to Spitzer) with a flexible stellar population scheme to deduce the mass-to-light ratio (\\Upsilon_*) of star-forming galaxies from the SPARC and S^4G samples. We find that the main sequence for galaxies, particular the low-mass end, combined with the locus of galaxy colors, constrains the possible star formation histories of disk and dwarf galaxies to a similar shape found by Speagle et al. (2014). Combining the deduced star formation history with stellar population models in the literature produces reliable \\Upsilon_* values as a function of galaxy color with an uncertainty of only 0.05 dex. We provide prescriptions to deduce \\Upsilon_* for optical and near-IR bandpasses, with near-IR bandpasses having the least uncertainty (\\Upsilon_* from 0.40 to 0.55). We also provide the community with a webtool, with flexible stellar population parameters, to generate their own \\Upsilon_* values over the wavelength range for most galaxy surveys.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-11-26T18:35:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "star formation history",
      "mass-to-light ratio",
      "disk galaxies",
      "galaxy color",
      "near-ir bandpasses"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}