Optical Spectroscopy of IRAS 02091+6333

Details Optical Spectroscopy of IRAS 02091+6333 Optical Spectroscopy of IRAS 02091+6333

2003-09-10

arxiv.org/abs/astro-ph/0309282v1

Astron.Astrophys.409:953-958,2003

Astronomy and Astrophysics

Astrophysics

5 pages, Latex, 3 tables, 4 figures, Astron. & Astrophys. - in press

Scientific paper

10.1051/0004-6361:20031202

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.

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