The distribution of [O II] emission-line widths of Las Campanas Redshift Survey galaxies

Michael Blanton, Huan Lin

    Research output: Contribution to journalArticle

    Abstract

    We present a simple funct.onal form for the joint distribution of R-band luminosity and [O II] λ3727 emission-line equivalent widths of galaxies and show that this form is a good fit to the galaxies in the Las Campanas Redshift Survey. We find a relationship between [O II] equivalent width W and R-band luminosity LR of the approximate form (W) ≈ (10 Å)(LR/LR, *) -1/2, where LR, * is the characteristic luminosity in the Schechter function. Because this joint distributicn yields information about the relationship between stellar mass in a galaxy and its recent star formation rate, it can be useful for testing theories of galaxy formation. Furthermore, understanding this joint distribution locally will make it easier to interpret the evolution of [O II] emission-line widths to higher redshifts.

    Original languageEnglish (US)
    JournalAstrophysical Journal
    Volume543
    Issue number2 PART 2
    StatePublished - Nov 10 2000

    Fingerprint

    luminosity
    galaxies
    galactic evolution
    star formation rate
    stellar mass
    distribution
    rate

    Keywords

    • Galaxies: Fundamental parameters
    • Galaxies: Luminosity function, mass function
    • Galaxies: Statistics

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    The distribution of [O II] emission-line widths of Las Campanas Redshift Survey galaxies. / Blanton, Michael; Lin, Huan.

    In: Astrophysical Journal, Vol. 543, No. 2 PART 2, 10.11.2000.

    Research output: Contribution to journalArticle

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