Uniqueness and evolutionary status of MWC349A

Vladimir Strelnitski, Kamber Schwarz, John Bieging, Josh T. Fuchs, Gary Walker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

MWC349A, which had remained an ordinary member of the MWC catalog for a few decades, is now known as: (1) the brightest stellar source of radio continuum; (2) the only known high-gain natural maser in hydrogen recombination lines; and (3) the only strictly proven natural high-gain laser (in IR hydrogen recombination lines). These phenomena seem to occur in the circumstellar disk seen almost edge-on. They help us understand the structure and kinematics of the disk. The evolutionary status of MWC 349A is still debated: a young HAeBe star with a preplanetary disk or an old B[e] star or even a protoplanetary nebula? We discuss new observational data obtained at the Maria Mitchell Observatory and elsewhere which may cast light on this issue.

Original languageEnglish (US)
Title of host publicationActive OB stars
Subtitle of host publicationstructure, evolution, mass loss, and critical limits
PublisherCambridge University Press
Pages632-633
Number of pages2
EditionS272
ISBN (Print)9780521198400
DOIs
StatePublished - Jul 2010

Publication series

NameProceedings of the International Astronomical Union
NumberS272
Volume6
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

    Fingerprint

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

Cite this

Strelnitski, V., Schwarz, K., Bieging, J., Fuchs, J. T., & Walker, G. (2010). Uniqueness and evolutionary status of MWC349A. In Active OB stars: structure, evolution, mass loss, and critical limits (S272 ed., pp. 632-633). (Proceedings of the International Astronomical Union; Vol. 6, No. S272). Cambridge University Press. https://doi.org/10.1017/S1743921311011653