The 2002 outburst of V838 Mon: As cool as it gets

S. Starrfield, R. M. Wagner, P. H. Hauschildt, H. E. Bond, A. Evans, M. T. Rushton, U. Munari, A. Henden, Z. G. Levay, N. Panagia, W. B. Sparks, R. L.M. Corradi

Research output: Contribution to journalConference articlepeer-review


V838 Mon was a previously unknown variable star that was discovered in outburst early in 2002. It exhibited 3 peaks in its outburst and rapidly evolved to become an L supergiant. The early spectra showed s-process elements and later infrared spectra showed VO, AlO, and other molecules implying that the ejected material was oxygen rich. A light echo was discovered in late February 2002 and observations with the ACS on HST have provided spectacular images and a geometric measurement of the distance. We briefly describe a worldwide campaign to study this variable in outburst and return to quiescence.

Original languageEnglish (US)
Pages (from-to)359-366
Number of pages8
JournalEuropean Space Agency, (Special Publication) ESA SP
Issue number560 I
StatePublished - 2005
Event13th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - Hamburg, Germany
Duration: Jul 5 2004Jul 9 2004

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science


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