On the progenitor of V838 Monocerotis

R. Tylenda*, N. Soker, R. Szczerba

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


We summarize and analyze the available observational data on the progenitor and the environment of V838 Mon, From the available photometric data for the progenitor of V838 Mon we exclude the possibility that the object before eruption was an evolved red giant star (AGB or RGB star). We find that most likely it was a main sequence or pre-main sequence star of ∼5-10 M . From the light echo structure and evolution we conclude that the reflecting dust is of interstellar nature rather than blown by V838 Mon in the past. We discuss the IRAS and CO data for interstellar medium observed near the position of V838 Mon. Several interstellar molecular regions have radial velocities similar to that of V838 Mon, so dust seen in the light echo might be related to one of them.

Original languageEnglish
Pages (from-to)1099-1109
Number of pages11
JournalAstronomy and Astrophysics
Issue number3
StatePublished - Oct 2005
Externally publishedYes


  • ISM: reflection nebulae
  • ISM: structure
  • Stars: binaries: close
  • Stars: circumstellar matter
  • Stars: early-type
  • Stars: individual: V838 Mon

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