Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region

U. A. Yildiz; E. F. van Dishoeck; L. E. Kristensen; R. Visser; Jes Kristian Jørgensen; G. J. Herczeg; T. A. van Kempen; M. R. Hogerheijde; S. D. Doty; A. O. Benz; S. Bruderer; S. F. Wampfler; E. Deul; R. Bachiller; A. Baudry; M. Benedettini; E. Bergin; P. Bjerkeli; G. A. Blake; S. Bontemps; J. Braine; P. Caselli; J. Cernicharo; C. Codella; F. Daniel; A. M. di Giorgio; C. Dominik; P. Encrenaz; M. Fich; A. Fuente; T. Giannini; J. R. Goicoechea; Th. de Graauw; F. Helmich; F. Herpin; T. Jacq; D. Johnstone; B. Larsson; D. Lis; R. Liseau; F.-C. Liu; M. Marseille; C. McCoey; G. Melnick; D. Neufeld; B. Nisini; M. Olberg; B. Parise; J. C. Pearson; R. Plume; C. Risacher; J. Santiago-García; P. Saraceno; R. Shipman; M. Tafalla; A. G. G. M. Tielens; F. van der Tak; F. Wyrowski; P. Dieleman; W. Jellema; V. Ossenkopf; R. Schieder; J. Stutzki

doi:10.1051/0004-6361/201015119

Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region

U. A. Yildiz, E. F. van Dishoeck, L. E. Kristensen, R. Visser, Jes Kristian Jørgensen, G. J. Herczeg, T. A. van Kempen, M. R. Hogerheijde, S. D. Doty, A. O. Benz, S. Bruderer, S. F. Wampfler, E. Deul, R. Bachiller, A. Baudry, M. Benedettini, E. Bergin, P. Bjerkeli, G. A. Blake, S. BontempsJ. Braine, P. Caselli, J. Cernicharo, C. Codella, F. Daniel, A. M. di Giorgio, C. Dominik, P. Encrenaz, M. Fich, A. Fuente, T. Giannini, J. R. Goicoechea, Th. de Graauw, F. Helmich, F. Herpin, T. Jacq, D. Johnstone, B. Larsson, D. Lis, R. Liseau, F.-C. Liu, M. Marseille, C. McCoey, G. Melnick, D. Neufeld, B. Nisini, M. Olberg, B. Parise, J. C. Pearson, R. Plume, C. Risacher, J. Santiago-García, P. Saraceno, R. Shipman, M. Tafalla, A. G. G. M. Tielens, F. van der Tak, F. Wyrowski, P. Dieleman, W. Jellema, V. Ossenkopf, R. Schieder, J. Stutzki

31 Citationer (Scopus)

Abstract

Herschel/HIFI observations of high-J lines (up to J_u = 10) of ¹²CO, ¹³CO and C¹⁸O 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 ¹²CO10 ^-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 ¹³CO 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 C¹⁸O 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.

Originalsprog	Engelsk
Tidsskrift	Astronomy & Astrophysics
Vol/bind	521
Sider (fra-til)	L40
Antal sider	7
ISSN	0004-6361
DOI	https://doi.org/10.1051/0004-6361/201015119
Status	Udgivet - 1 okt. 2010

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10.1051/0004-6361/201015119

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Yildiz, U. A., van Dishoeck, E. F., Kristensen, L. E., Visser, R., Jørgensen, 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., ... Stutzki, J. (2010). Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region. Astronomy & Astrophysics, 521, L40. https://doi.org/10.1051/0004-6361/201015119

Yildiz, UA, van Dishoeck, EF, Kristensen, LE, Visser, R, Jørgensen, JK, Herczeg, GJ, van Kempen, TA, Hogerheijde, MR, Doty, SD, Benz, AO, Bruderer, S, Wampfler, SF, Deul, E, Bachiller, R, Baudry, A, Benedettini, M, Bergin, E, Bjerkeli, P, Blake, GA, Bontemps, S, Braine, J, Caselli, P, Cernicharo, J, Codella, C, Daniel, F, di Giorgio, AM, Dominik, C, Encrenaz, P, Fich, M, Fuente, A, Giannini, T, Goicoechea, JR, de Graauw, T, 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, JC, Plume, R, Risacher, C, Santiago-García, J, Saraceno, P, Shipman, R, Tafalla, M, Tielens, AGGM, van der Tak, F, Wyrowski, F, Dieleman, P, Jellema, W, Ossenkopf, V, Schieder, R & Stutzki, J 2010, 'Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region', Astronomy & Astrophysics, bind 521, s. L40. https://doi.org/10.1051/0004-6361/201015119

@article{4de53c7f6b4b46d2a73e1cf3427a52dc,

title = "Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region",

abstract = "Herschel/HIFI observations of high-J lines (up to Ju = 10) of 12CO, 13CO and C18O 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 12CO10 -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 13CO 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 C18O 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.",

author = "Yildiz, {U. A.} and {van Dishoeck}, {E. F.} and Kristensen, {L. E.} and R. Visser and J{\o}rgensen, {Jes Kristian} and Herczeg, {G. J.} and {van Kempen}, {T. A.} and Hogerheijde, {M. R.} and Doty, {S. D.} and Benz, {A. O.} and S. Bruderer and Wampfler, {S. F.} and E. Deul and R. Bachiller and A. Baudry and M. Benedettini and E. Bergin and P. Bjerkeli and Blake, {G. A.} and S. Bontemps and J. Braine and P. Caselli and J. Cernicharo and C. Codella and F. Daniel and {di Giorgio}, {A. M.} and C. Dominik and P. Encrenaz and M. Fich and A. Fuente and T. Giannini and Goicoechea, {J. R.} and {de Graauw}, Th. and F. Helmich and F. Herpin and T. Jacq and D. Johnstone and B. Larsson and D. Lis and R. Liseau and F.-C. Liu and M. Marseille and C. McCoey and G. Melnick and D. Neufeld and B. Nisini and M. Olberg and B. Parise and Pearson, {J. C.} and R. Plume and C. Risacher and J. Santiago-Garc{\'i}a and P. Saraceno and R. Shipman and M. Tafalla and Tielens, {A. G. G. M.} and {van der Tak}, F. and F. Wyrowski and P. Dieleman and W. Jellema and V. Ossenkopf and R. Schieder and J. Stutzki",

year = "2010",

month = oct,

day = "1",

doi = "10.1051/0004-6361/201015119",

language = "English",

volume = "521",

pages = "L40",

journal = "Astronomy and Astrophysics Supplement Series",

issn = "0004-6361",

publisher = "E D P Sciences",

}

TY - JOUR

T1 - Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region

AU - Yildiz, U. A.

AU - van Dishoeck, E. F.

AU - Kristensen, L. E.

AU - Visser, R.

AU - Jørgensen, Jes Kristian

AU - Herczeg, G. J.

AU - van Kempen, T. A.

AU - Hogerheijde, M. R.

AU - Doty, S. D.

AU - Benz, A. O.

AU - Bruderer, S.

AU - Wampfler, S. F.

AU - Deul, E.

AU - Bachiller, R.

AU - Baudry, A.

AU - Benedettini, M.

AU - Bergin, E.

AU - Bjerkeli, P.

AU - Blake, G. A.

AU - Bontemps, S.

AU - Braine, J.

AU - Caselli, P.

AU - Cernicharo, J.

AU - Codella, C.

AU - Daniel, F.

AU - di Giorgio, A. M.

AU - Dominik, C.

AU - Encrenaz, P.

AU - Fich, M.

AU - Fuente, A.

AU - Giannini, T.

AU - Goicoechea, J. R.

AU - de Graauw, Th.

AU - Helmich, F.

AU - Herpin, F.

AU - Jacq, T.

AU - Johnstone, D.

AU - Larsson, B.

AU - Lis, D.

AU - Liseau, R.

AU - Liu, F.-C.

AU - Marseille, M.

AU - McCoey, C.

AU - Melnick, G.

AU - Neufeld, D.

AU - Nisini, B.

AU - Olberg, M.

AU - Parise, B.

AU - Pearson, J. C.

AU - Plume, R.

AU - Risacher, C.

AU - Santiago-García, J.

AU - Saraceno, P.

AU - Shipman, R.

AU - Tafalla, M.

AU - Tielens, A. G. G. M.

AU - van der Tak, F.

AU - Wyrowski, F.

AU - Dieleman, P.

AU - Jellema, W.

AU - Ossenkopf, V.

AU - Schieder, R.

AU - Stutzki, J.

PY - 2010/10/1

Y1 - 2010/10/1

N2 - Herschel/HIFI observations of high-J lines (up to Ju = 10) of 12CO, 13CO and C18O 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 12CO10 -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 13CO 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 C18O 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.

AB - Herschel/HIFI observations of high-J lines (up to Ju = 10) of 12CO, 13CO and C18O 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 12CO10 -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 13CO 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 C18O 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.

U2 - 10.1051/0004-6361/201015119

DO - 10.1051/0004-6361/201015119

M3 - Journal article

SN - 0004-6361

VL - 521

SP - L40

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

ER -

Herschel/HIFI observations of high-J CO lines in the NGC 1333 low-mass star-forming region

Abstract

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