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Astron. Astrophys. 315, L293-L296 (1996)

LWS observations of the bright rimmed globule IC1396N*

P. Saraceno1, C. Ceccarelli1,2, P. Clegg3, C. Correia3, A. Di Giorgio4, T. Giannini1, M. Griffin3, D. Lorenzetti5, S. Molinari1,4, Nguyen-Q-Rieu6, B. Nisini1, A. Radicchi1, L. Spinoglio1, E. Tommasi1, G.J. White3, P.A.R. Ade3, P. Andr'e7, C. Armand4, M.J. Barlow8, M. Burgdorf4, E. Caux9, P. Cerulli1, J. Fischer10, I. Furniss8, B. Glencross8, C. Gry4, K.J. King15, T. Lim4, R. Liseau1,11, N. Minchin3, D. Naylor12, D. Texier4, R. Orfei1, F. Palla13, S. Sidher4, H.A. Smith14, B. Swinyard15, N. Trams4, and S. Unger15

1 CNR-Istituto di Fisica dello Spazio Interplanetario, CP 27, I-00044 Frascati, Italy
2 Laboratoire d'Astrophysique de l'Observatoire de Grenoble, rue de la Piscine, BP 53, F-38041 Grenoble, France
3 Physics Department, Queen Mary & Westfield College, University of London, Mile End Road, London E1 4NS, UK
4 The LWS Instrument-Dedicated Team, ISO Science Operations Centre, Villafranca, Spain
5 Osservatorio Astronomico di Roma, I-00040 Monte Porzio, Italy
6 Observatoire de Paris, 61 avenue de l'Observatoire, F-75014 Paris, France
7 C.E.A., Service d'Astrophysique C.E. Saclay, F-91191 Gif-sur-Ivette Cedex, France
8 Dept. Physics and Astronomy, University College London, Gower Street, London, UK
9 CESR/CNRS-UPS, BP 4346, F-31029 Toulouse Cedex, France
10 Naval Research Laboratory, Remote Sensing Division, 4555 Overlook Ave., SW, Washington D.C., USA
11 Stockholm Observatory, Saltsjöbaden, Sweden
12 Dept. of Physics, University of Lethbridge, Lethbridge, Alberta t1k 3m4, Canada
13 Osservatorio Astrofisico di Arcetri, Largo E.Fermi 5, I-50125 Firenze, Italy
14 Laboratory for Astrophysics, National Air and Space Museum, Smithsonian Institution, Washington D.C., USA
15 Space Science Department, Rutherford Appleton Lab, Chilton, Oxon OX11 OQX, UK

Received 1 August 1996 / Accepted 13 August 1996

Abstract. We present the first far-infrared spectrum of the IRAS source associated with IC1396N, located in the HII region IC1396 together with submillimeter and millimeter photometry. A rich spectrum of CO, OH, and H2O lines are detected in the ISO-LWS spectrum, indicative of a warm, dense region, probably shock excited, around the source. Among the fine structure lines, [OIII] and [NIII] are also detected and can be explained by the presence of the O6 star HD206267 approximately 16 pc away.

The far infrared and submillimeter spectral energy distribution is fitted with a model assuming spherical grey-bodies with a radial power law of density and temperature. An accurate measure of the bolometric luminosity and an estimate of the total envelope mass are obtained.

Key words: stars: formation - ISM: jets and outflows - ISM: individual objects: IC1396N - infrared: ISM:lines

* Based on observations with: ISO, an ESA project funded by ESA Member States and with the participation of ISAS and NASA; JCMT, operated by the Royal Observatories on behalf of the UK PPARC, the Canadian NRC and the Netherlands ZWO.

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