The host galaxies of fast-Ejecta core-collapse supernovae

Patrick L. Kelly, Alexei V. Filippenko, Maryam Modjaz, Daniel Kocevski

    Research output: Contribution to journalArticle

    Abstract

    Spectra of broad-lined Type Ic supernovae (SNe Ic-BL), the only kind of SN observed at the locations of long-duration gamma-ray bursts (LGRBs), exhibit wide features indicative of high ejecta velocities (0.1c). We study the host galaxies of a sample of 245 low-redshift (z < 0.2) core-collapse SNe, including 17 SNe Ic-BL, discovered by galaxy-untargeted searches, and 15 optically luminous and dust-obscured z < 1.2 LGRBs. We show that, in comparison with Sloan Digital Sky Survey galaxies having similar stellar masses, the hosts of low-redshift SNe Ic-BL and z < 1.2 LGRBs have high stellar mass and star formation rate densities. Core-collapse SNe having typical ejecta velocities, in contrast, show no preference for such galaxies. Moreover, we find that the hosts of SNe Ic-BL, unlike those of SNe Ib/Ic and SNe II, exhibit high gas velocity dispersions for their stellar masses. The patterns likely reflect variations among star-forming environments and suggest that LGRBs can be used as probes of conditions in high-redshift galaxies. They may be caused by efficient formation of massive binary progenitor systems in densely star-forming regions, or, less probably, a higher fraction of stars created with the initial masses required for an SN Ic-BL or LGRB. Finally, we show that the preference of SNe Ic-BL and LGRBs for galaxies with high stellar mass and star formation rate densities cannot be attributed to a preference for low metal abundances but must reflect the influence of a separate environmental factor.

    Original languageEnglish (US)
    Article number23
    JournalAstrophysical Journal
    Volume789
    Issue number1
    DOIs
    StatePublished - Jul 1 2014

    Fingerprint

    ejecta
    gamma ray bursts
    supernovae
    galaxies
    stellar mass
    star formation rate
    stars
    environmental factor
    probe
    dust
    metal
    gas
    probes
    gases
    metals
    rate

    Keywords

    • Galaxies: abundances
    • Galaxies: star formation
    • Gamma-ray burst: general
    • Supernovae: general

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

    Cite this

    Kelly, P. L., Filippenko, A. V., Modjaz, M., & Kocevski, D. (2014). The host galaxies of fast-Ejecta core-collapse supernovae. Astrophysical Journal, 789(1), [23]. https://doi.org/10.1088/0004-637X/789/1/23

    The host galaxies of fast-Ejecta core-collapse supernovae. / Kelly, Patrick L.; Filippenko, Alexei V.; Modjaz, Maryam; Kocevski, Daniel.

    In: Astrophysical Journal, Vol. 789, No. 1, 23, 01.07.2014.

    Research output: Contribution to journalArticle

    Kelly, PL, Filippenko, AV, Modjaz, M & Kocevski, D 2014, 'The host galaxies of fast-Ejecta core-collapse supernovae', Astrophysical Journal, vol. 789, no. 1, 23. https://doi.org/10.1088/0004-637X/789/1/23
    Kelly, Patrick L. ; Filippenko, Alexei V. ; Modjaz, Maryam ; Kocevski, Daniel. / The host galaxies of fast-Ejecta core-collapse supernovae. In: Astrophysical Journal. 2014 ; Vol. 789, No. 1.
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