SIMBAD references

1996A&A...312..553V - Astronomy and Astrophysics, volume 312, 553-559 (1996/8-2)

HD 133656: a new high-latitude supergiant.

VAN WINCKEL H., OUDMAIJER R.D. and TRAMS N.R.

Abstract (from CDS):

In the course of our study of post-Asymptotic Giant Branch objects, we discovered that the seventh magnitude A supergiant HD 133656 has an infrared excess emission due to cool circumstellar dust, and that its photospheric abundance pattern is population II like. We present a detailed abundance study of the object, and discuss its nature in terms of post-AGB evolution: its galactic latitude, cold IR-excess, luminosity, abundances and photometric behaviour indicate HD 133656 to be a descendant of the F-type high-latitude supergiants. The deficiencies of the s-process elements are more difficult to understand in a post-AGB evolutinary scenario.

Abstract Copyright:

Journal keyword(s): stars: circumstellar matter - stars: evolution - stars: individual: HD 133656 - stars: mass loss - stars: AGB and post-AGB

Simbad objects: 11

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