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A very faint core-collapse supernova in M85

Author

Listed:
  • A. Pastorello

    (Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast)

  • M. Della Valle

    (INAF Osservatorio Astronomico di Arcetri
    International Center for Relativistic Astrophysics Network
    § Kavli Institute for Theoretical Physics, University of California Santa Barbara, California 93106, USA)

  • S. J. Smartt

    (Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast)

  • L. Zampieri

    (INAF Osservatorio Astronomico di Padova)

  • S. Benetti

    (§ Kavli Institute for Theoretical Physics, University of California Santa Barbara, California 93106, USA
    INAF Osservatorio Astronomico di Padova)

  • E. Cappellaro

    (§ Kavli Institute for Theoretical Physics, University of California Santa Barbara, California 93106, USA
    INAF Osservatorio Astronomico di Padova)

  • P. A. Mazzali

    (Max-Planck-Institut für Astrophysik
    INAF Osservatorio Astronomico di Trieste)

  • F. Patat

    (European Southern Observatory)

  • S. Spiro

    (Astrophysics Research Centre, School of Mathematics and Physics, Queen’s University Belfast
    INAF Osservatorio Astronomico di Padova)

  • M. Turatto

    (§ Kavli Institute for Theoretical Physics, University of California Santa Barbara, California 93106, USA
    INAF Osservatorio Astronomico di Padova)

  • S. Valenti

    (European Southern Observatory
    Università di Ferrara)

Abstract

Arising from: S. R. Kulkarni et al. Nature 447, 458–460 (2007)10.1038/nature05822 An anomalous transient in the early Hubble-type (S0) galaxy Messier 85 (M85) in the Virgo cluster was discovered by Kulkarni et al.1 on 7 January 2006 that had very low luminosity (peak absolute R-band magnitude MR of about -12) that was constant over more than 80 days, red colour and narrow spectral lines, which seem inconsistent with those observed in any known class of transient events. Kulkarni et al.1 suggest an exotic stellar merger as the possible origin. An alternative explanation is that the transient in M85 was a type II-plateau supernova of extremely low luminosity, exploding in a lenticular galaxy with residual star-forming activity. This intriguing transient might be the faintest supernova that has ever been discovered.

Suggested Citation

  • A. Pastorello & M. Della Valle & S. J. Smartt & L. Zampieri & S. Benetti & E. Cappellaro & P. A. Mazzali & F. Patat & S. Spiro & M. Turatto & S. Valenti, 2007. "A very faint core-collapse supernova in M85," Nature, Nature, vol. 449(7164), pages 1-2, October.
    • Handle: RePEc:nat:nature:v:449:y:2007:i:7164:d:10.1038_nature06282
    DOI: 10.1038/nature06282
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