Yildiz, U. A., van Dishoeck, E. F., Kristensen, L. E., Visser, R., Jorgensen, J. K., Herczeg, G. J., van Kempen, T. A., Hogerheijde, M. R., Doty, S. D., Benz, A. O., Bruderer, S., Wampfler, S. F., Deul, E., Bachiller, R., Baudry, A., Benedettini, M., Bergin, E., Bjerkeli, P., Blake, G. A., Bontemps, S., Braine, J., Caselli, P., Cernicharo, J., Codella, C., Daniel, F., di Giorgio, A. M., Dominik, C., Encrenaz, P., Fich, M., Fuente, A., Giannini, T., Goicoechea, J. R., de Graauw, Th., Helmich, F., Herpin, F., Jacq, T., Johnstone, D., Larsson, B., Lis, D., Liseau, R., Liu, F. -C., Marseille, M., McCoey, C., Melnick, G., Neufeld, D., Nisini, B., Olberg, M., Parise, B., Pearson, J. C., Plume, R., Risacher, C., Santiago-Garcia, J., Saraceno, P., Shipman, R., Tafalla, M., Tielens, A. G. G. M., van der Tak, F., Wyrowski, F., Dieleman, P., Jellema, W., Ossenkopf, V., Schieder, R. and Stutzki, J. (2010). Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region. Astron. Astrophys., 521. LES ULIS CEDEX A: EDP SCIENCES S A. ISSN 0004-6361

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Abstract

Herschel/HIFI observations of high-J lines (up to J(u) = 10) of (CO)-C-12, (CO)-C-13 and (CO)-O-18 are presented toward three deeply embedded low-mass protostars, NGC 1333 IRAS 2A, IRAS 4A, and IRAS 4B, obtained as part of the Water In Star-forming regions with Herschel (WISH) key program. The spectrally-resolved HIFI data are complemented by ground-based observations of lower-J CO and isotopologue lines. The (CO)-C-12 10-9 profiles are dominated by broad (FWHM 25-30 km s(-1)) emission. Radiative transfer models are used to constrain the temperature of this shocked gas to 100-200 K. Several CO and (CO)-C-13 line profiles also reveal a medium-broad component (FWHM5-10 km s(-1)), seen prominently in H2O lines. Column densities for both components are presented, providing a reference for determining abundances of other molecules in the same gas. The narrow (CO)-O-18 9-8 lines probe the warmer part of the quiescent envelope. Their intensities require a jump in the CO abundance at an evaporation temperature around 25 K, thus providing new direct evidence for a CO ice evaporation zone around low-mass protostars.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Yildiz, U. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Dishoeck, E. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kristensen, L. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Visser, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jorgensen, J. K.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herczeg, G. J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Kempen, T. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hogerheijde, M. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Doty, S. D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benz, A. O.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bruderer, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wampfler, S. F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Deul, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bachiller, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Baudry, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Benedettini, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bergin, E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bjerkeli, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Blake, G. A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Bontemps, S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Braine, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caselli, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cernicharo, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Codella, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Daniel, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
di Giorgio, A. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dominik, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Encrenaz, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fich, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fuente, A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giannini, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Goicoechea, J. R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
de Graauw, Th.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Helmich, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Herpin, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jacq, T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Johnstone, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Larsson, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lis, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liseau, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, F. -C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Marseille, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
McCoey, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Melnick, G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Neufeld, D.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nisini, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Olberg, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parise, B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pearson, J. C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Plume, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Risacher, C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Santiago-Garcia, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Saraceno, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shipman, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tafalla, M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tielens, A. G. G. M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van der Tak, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wyrowski, F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dieleman, P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jellema, W.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ossenkopf, V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schieder, R.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Stutzki, J.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-495115
DOI: 10.1051/0004-6361/201015119
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
NGC-1333 IRAS-4; DENSE CORES; PROTOSTARS; ENVELOPES; ABUNDANCE; H2CO; EVOLUTION; WATER; DUST; HIFIMultiple languages
Astronomy & AstrophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/49511

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