Johnstone, D., Fich, M., McCoey, C., van Kempen, T. A., Fuente, A., Kristensen, L. E., Cernicharo, J., Caselli, P., Visser, R., Plume, R., Herczeg, G. J., van Dishoeck, E. F., Wampfler, S., Bachiller, R., Baudry, A., Benedettini, M., Bergin, E., Benz, A. O., Bjerkeli, P., Blake, G., Bontemps, S., Braine, J., Bruderer, S., Codella, C., Daniel, F., di Giorgio, A. M., Dominik, C., Doty, S. D., Encrenaz, P., Giannini, T., Goicoechea, J. R., de Graauw, Th., Helmich, F., Herpin, F., Hogerheijde, M. R., Jacq, T., Jorgensen, J. K., Larsson, B., Lis, D., Liseau, R., Marseille, M., Melnick, G., Neufeld, D., Nisini, B., Olberg, M., Parise, B., Pearson, J., Risacher, C., Santiago-Garcia, J., Saraceno, P., Shipman, R., Tafalla, M., van der Tak, F., Wyrowski, F., Yildiz, U. A., Caux, E., Honingh, N., Jellema, W., Schieder, R., Teyssier, D. and Whyborn, N. (2010). Herschel/HIFI spectroscopy of the intermediate mass protostar NGC7129 FIRS 2. Astron. Astrophys., 521. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 0004-6361

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Abstract

Herschel/HIFI observations of water from the intermediate mass protostar NGC 7129 FIRS 2 provide a powerful diagnostic of the physical conditions in this star formation environment. Six spectral settings, covering four (H2O)-O-16 and two (H2O)-O-18 lines, were observed and all but one (H2O)-O-18 line were detected. The four (H2O)-O-16 lines discussed here share a similar morphology: a narrower, approximate to 6kms(-1), component centered slightly redward of the systemic velocity of NGC7129 FIRS 2 and a much broader, approximate to 25 km s(-1) component centered blueward and likely associated with powerful outflows. The narrower components are consistent with emission from water arising in the envelope around the intermediate mass protostar, and the abundance of H2O is constrained to approximate to 10(-7) for the outer envelope. Additionally, the presence of a narrow self-absorption component for the lowest energy lines is likely due to self-absorption from colder water in the outer envelope. The broader component, where the H2O/CO relative abundance is found to be approximate to 0.2, appears to be tracing the same energetic region that produces strong CO emission at high J.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Johnstone, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fich, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McCoey, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Kempen, T. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fuente, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kristensen, L. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cernicharo, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caselli, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Visser, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Plume, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herczeg, G. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Dishoeck, E. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wampfler, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bachiller, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baudry, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benedettini, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bergin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benz, A. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bjerkeli, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blake, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bontemps, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braine, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruderer, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Codella, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Daniel, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
di Giorgio, A. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dominik, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Doty, S. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Encrenaz, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giannini, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goicoechea, J. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Graauw, Th.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Helmich, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herpin, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hogerheijde, M. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jacq, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jorgensen, J. K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Larsson, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lis, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liseau, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marseille, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Melnick, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neufeld, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nisini, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olberg, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parise, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pearson, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Risacher, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santiago-Garcia, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saraceno, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shipman, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tafalla, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van der Tak, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wyrowski, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yildiz, U. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caux, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Honingh, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jellema, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schieder, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Teyssier, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Whyborn, N.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-494887
DOI: 10.1051/0004-6361/201015122
Journal or Publication Title: Astron. Astrophys.
Volume: 521
Date: 2010
Publisher: EDP SCIENCES S A
Place of Publication: LES ULIS CEDEX A
ISSN: 0004-6361
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
STAR-FORMING REGIONS; YOUNG STELLAR OBJECTS; PACS SPECTROSCOPY; HH 46; WATER; HIFI; EXCITATION; EVOLUTIONMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/49488

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