WeBo 1: A young barium star surrounded by a ringlike planetary nebula

Howard E. Bond, Don L. Pollacco, Ronald F. Webbink

Research output: Contribution to journalArticle

45 Citations (Scopus)

Abstract

WeBo 1 (PN G135.6+01.0), a previously unrecognized planetary nebula with a remarkable thin-ring morphology, was discovered serendipitously on Digitized Sky Survey images. The central star is found to be a late-type giant with overabundances of carbon and s-process elements. The giant is chromospherically active and photometrically variable, with a probable period of 4.7 days; this suggests that the star is spotted, and that 4.7 days is its rotation period. We propose a scenario in which one component of a binary system became an asymptotic giant branch (AGB) star with a dense stellar wind enriched in C and s-process elements; a portion of the wind was accreted by the companion, contaminating its atmosphere and spinning up its rotation. The AGB star has now become a hot subdwarf, leaving the optical companion as a freshly contaminated barium star inside an ionized planetary nebula.

Original languageEnglish (US)
Pages (from-to)260-264
Number of pages5
JournalAstronomical Journal
Volume125
Issue number1 1765
DOIs
StatePublished - Jan 1 2003

Fingerprint

planetary nebulae
barium
asymptotic giant branch stars
stars
stellar winds
metal spinning
atmosphere
carbon
atmospheres
rings
young

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Bond, Howard E. ; Pollacco, Don L. ; Webbink, Ronald F. / WeBo 1 : A young barium star surrounded by a ringlike planetary nebula. In: Astronomical Journal. 2003 ; Vol. 125, No. 1 1765. pp. 260-264.
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WeBo 1 : A young barium star surrounded by a ringlike planetary nebula. / Bond, Howard E.; Pollacco, Don L.; Webbink, Ronald F.

In: Astronomical Journal, Vol. 125, No. 1 1765, 01.01.2003, p. 260-264.

Research output: Contribution to journalArticle

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