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Astron. Astrophys. 331, L45-L48 (1998)

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Letter to the Editor

IRAS 06562-0337, the Iron-clad Nebula: a young star embedded in a molecular cloud

R. Bachiller 1, M. Pérez Gutiérrez 1 and P. García-Lario 2, 3

1 IGN Observatorio Astronómico Nacional, Apartado 1143, E-28800 Alcalá de Henares, Spain
2 Leiden Observatory, P.O. Box 9513, 2300 RA Leiden, The Netherlands
3 LAEFF, Estación de Villafranca del Castillo. Apartado 50727, E-28080 Madrid, Spain

Received 15 May 1997 / Accepted 19 June 1997

Abstract

We present millimeter and sub-millimeter observations of IRAS 06562-0337, the so-called Iron-clad Nebula. It had been suggested previously that this object could be an evolved star in the transitional phase between the AGB and a planetary nebula. However, our observations show that this IRAS source lies at the center of a dense massive molecular cloud which exhibits strong lines of CO, 13 CO, CS, and C I. The close association of the source with this molecular cloud, the proximity to other molecular complexes, the infrared spectral energy distribution, and the main characteristics of the previously observed optical spectra, imply that IRAS 06562-0337 is a young stellar object (or a small cluster) still associated to its parent molecular cloud. IRAS 06562 is placed at 7 [FORMULA] 3 kpc from the Sun, in the anticenter direction. Its location in the Galaxy, at about 15 kpc from the galactic center, makes the object particularly interesting for studies of galactic structure.

Key words: stars: emission-line, Be – stars: formation – ISM: clouds – ISM: planetary nebulae: IRAS 06562-0337 – radio lines: ISM

Send offprint requests to: R. Bachiller

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© European Southern Observatory (ESO) 1998

Online publication: March 3, 1998
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