Nebular emission lines in IRAS 17347-3139

Details Nebular emission lines in IRAS 17347-3139 Nebular emission lines in IRAS 17347-3139

2006-08-14

arxiv.org/abs/astro-ph/0608290v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures, Proc. IAU Symp. 234, Planetary Nebulae in Our Galaxy and Beyond (3-7 Apr 2006), eds. M.J. Barlow & R.H. Me

Scientific paper

10.1017/S1743921306003620

We report the detection of nebular emission lines in the optical and mid-infrared spectra of IRAS 17347-3139, a heavily obscured OH/IR star which may be rapidly evolving from the AGB to the PN stage. The presence of emission lines is interpreted as a clear indication that the ionization of its circumstellar envelope has already started. This source belongs to the rare class of objects known as `OHPNe' displaying both OH maser and radio continuum emission. However, unlike the rest of stars in this class, prominent C-rich dust features are detected in its mid-infrared spectrum, which makes the analysis of this star particularly interesting.

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