Optical spectroscopy of IRAS 02091+6333

We present a detailed spectroscopic investigation, spanning four winters, of the asymptotic giant branch (AGB) star IRAS 02091+6333. Zijlstra & Weinberger (2002) found a giant wall of dust around this star and modelled this unique phenomenon. However their work suffered from the quality of the o...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2003-10, Vol.409 (3), p.953-957
Main Authors: Kimeswenger, S., Bacher, A., Emprechtinger, M., Grömer, G. E., Kapferer, W., Kausch, W., Kitzbichler, M. G., Lechner, M. F. M., Lederle, C., Uytterhoeven, K., Zijlstra, A. A.
Format: Article
Language:English
Subjects:
stars: AGB and post-AGB
stars: individual: IRAS 02091+6333 = GSC 04041-01743
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Summary:We present a detailed spectroscopic investigation, spanning four winters, of the asymptotic giant branch (AGB) star IRAS 02091+6333. Zijlstra & Weinberger (2002) found a giant wall of dust around this star and modelled this unique phenomenon. However their work suffered from the quality of the optical investigations of the central object. Our spectroscopic investigation allowed us to define the spectral type and the interstellar foreground extinction more precisely. Accurate multi band photometry was carried out. This provides us with the possibility to derive the physical parameters of the system. The measurements presented here suggest a weak irregular photometric variability of the target, while there is no evidence of a spectroscopic variability over the last four years.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361:20031202