Two small bubbles around LMC blue supergiants

Kerstin Weis, Dominik J. Bomans, You-Hua Chu, Michael D. Joner, R. Chris Smith

Research output: Contribution to journalConference articlepeer-review

Abstract

Fast stellar winds of massive stars sweep up ambient medium to form bubbles. Bubbles around unevolved massive stars consist of interstellar material, while bubbles around evolved massive stars may contain processed stellar material. In the field of the Supergiant Shell LMC 2 in the Large Magellanic Cloud (LMC), we found two small bubbles around the blue supergiants Sk-69 271 and Sk-69 279. Sk-69 271 is a B2 supergiant and its bubble could be externally ionized by UV flux from the HII complex N160, as only the half shell facing N160 is ionized. These two stars are among the brightest blue stars within the field we examined. Follow-up abundance observations are needed to determine whether the bubbles are circumstellar or interstellar in origin.

Original languageEnglish (US)
Pages (from-to)237-240
Number of pages4
JournalRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
Volume3
StatePublished - Dec 1 1995
Event5th Mexico-Texas Conference on Astrophysics: Gaseous Nebulae and Star Formation - Tequesquitengo, Mor, Mexico
Duration: Apr 3 1995Apr 5 1995

Keywords

  • H II regions
  • ISM: bubbles
  • Stars: early type
  • Stars: mass-loss

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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