Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333

L. E. Kristensen; R. Visser; E. F. Van Dishoeck; U. A. Yildiz; S. D. Doty; G. J. Herczeg; F. C. Liu; B. Parise; Jes Kristian Jørgensen; T. A. Van Kempen; Christian Brinch; Susanne Franziska Wampfler; S. Bruderer; A. O. Benz; M. R. Hogerheijde; E. Deul; R. Bachiller; A. Baudry; M. Benedettini; E. A. Bergin; Per Bjerkeli; G. A. Blake; S. Bontemps; J. Braine; P. Caselli; J. Cernicharo; C. Codella; F. Daniel; Th De Graauw; A. M. Di Giorgio; C. Dominik; P. Encrenaz; M. Fich; A. Fuente; T. Giannini; J. R. Goicoechea; F. Helmich; F. Herpin; T. Jacq; D. Johnstone; M. J. Kaufman; B. Larsson; D. Lis; R. Liseau; M. Marseille; C. McCoey; G. Melnick; D. Neufeld; B. Nisini; M. Olberg; 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; D. Beintema; A. De Jonge; P. Dieleman; V. Ossenkopf; P. Roelfsema; J. Stutzki; N. Whyborn

doi:10.1051/0004-6361/201015100

Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333

L. E. Kristensen, R. Visser, E. F. Van Dishoeck, U. A. Yildiz, S. D. Doty, G. J. Herczeg, F. C. Liu, B. Parise, Jes Kristian Jørgensen, T. A. Van Kempen, Christian Brinch, Susanne Franziska Wampfler, S. Bruderer, A. O. Benz, M. R. Hogerheijde, E. Deul, R. Bachiller, A. Baudry, M. Benedettini, E. A. BerginPer Bjerkeli, G. A. Blake, S. Bontemps, J. Braine, P. Caselli, J. Cernicharo, C. Codella, F. Daniel, Th De Graauw, A. M. Di Giorgio, C. Dominik, P. Encrenaz, M. Fich, A. Fuente, T. Giannini, J. R. Goicoechea, F. Helmich, F. Herpin, T. Jacq, D. Johnstone, M. J. Kaufman, B. Larsson, D. Lis, R. Liseau, M. Marseille, C. McCoey, G. Melnick, D. Neufeld, B. Nisini, M. Olberg, 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, D. Beintema, A. De Jonge, P. Dieleman, V. Ossenkopf, P. Roelfsema, J. Stutzki, N. Whyborn

67 Citationer (Scopus)

Abstract

"Water In Star-forming regions with Herschel" (WISH) is a key programme dedicated to studying the role of water and related species during the star-formation process and constraining the physical and chemical properties of young stellar objects. The Heterodyne Instrument for the Far-Infrared (HIFI) on the Herschel Space Observatory observed three deeply embedded protostars in the low-mass star-forming region NGC 1333 in several H₂¹⁶O, H₂¹⁸O, and CO transitions. Line profiles are resolved for five H₂¹⁶O transitions in each source, revealing them to be surprisingly complex. The line profiles are decomposed into broad (>20 km s^-1), medium-broad (∼5-10 km s^-1), and narrow (<5 km s^-1) components. The H₂¹⁸O emission is only detected in broad 1₁₀-1₀₁ lines (>20 km s ^-1), indicating that its physical origin is the same as for the broad H₂¹⁶O component. In one of the sources, IRAS4A, an inverse P Cygni profile is observed, a clear sign of infall in the envelope. From the line profiles alone, it is clear that the bulk of emission arises from shocks, both on small (1000 AU) and large scales along the outflow cavity walls (∼10 000 AU). The H₂O line profiles are compared to CO line profiles to constrain the H₂O abundance as a function of velocity within these shocked regions. The H₂O/CO abundance ratios are measured to be in the range of ∼0.1-1, corresponding to H₂O abundances of ∼10^-5-10^-4 with respect to H ₂. Approximately 5-10% of the gas is hot enough for all oxygen to be driven into water in warm post-shock gas, mostly at high velocities.

Originalsprog	Engelsk
Artikelnummer	L30
Tidsskrift	Astronomy & Astrophysics
Vol/bind	521
Antal sider	6
ISSN	0004-6361
DOI	https://doi.org/10.1051/0004-6361/201015100
Status	Udgivet - okt. 2010

Emneord

Astrochemistry
ISM: individual objects: NGC 1333
ISM: jets and outflows
ISM: molecules
stars: formation

Adgang til dokumentet

10.1051/0004-6361/201015100

Andre filer og links

Link to publication in Scopus

Citationsformater

Kristensen, L. E., Visser, R., Van Dishoeck, E. F., Yildiz, U. A., Doty, S. D., Herczeg, G. J., Liu, F. C., Parise, B., Jørgensen, J. K., Van Kempen, T. A., Brinch, C., Wampfler, S. F., Bruderer, S., Benz, A. O., Hogerheijde, M. R., Deul, E., Bachiller, R., Baudry, A., Benedettini, M., ... Whyborn, N. (2010). Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333. Astronomy & Astrophysics, 521, [L30]. https://doi.org/10.1051/0004-6361/201015100

Kristensen, LE, Visser, R, Van Dishoeck, EF, Yildiz, UA, Doty, SD, Herczeg, GJ, Liu, FC, Parise, B, Jørgensen, JK, Van Kempen, TA, Brinch, C, Wampfler, SF, Bruderer, S, Benz, AO, Hogerheijde, MR, Deul, E, Bachiller, R, Baudry, A, Benedettini, M, Bergin, EA, Bjerkeli, P, Blake, GA, Bontemps, S, Braine, J, Caselli, P, Cernicharo, J, Codella, C, Daniel, F, De Graauw, T, Di Giorgio, AM, Dominik, C, Encrenaz, P, Fich, M, Fuente, A, Giannini, T, Goicoechea, JR, Helmich, F, Herpin, F, Jacq, T, Johnstone, D, Kaufman, MJ, Larsson, B, Lis, D, Liseau, R, Marseille, M, McCoey, C, Melnick, G, Neufeld, D, Nisini, B, Olberg, M, Pearson, JC, Plume, R, Risacher, C, Santiago-García, J, Saraceno, P, Shipman, R, Tafalla, M, Tielens, AGGM, Van Der Tak, F, Wyrowski, F, Beintema, D, De Jonge, A, Dieleman, P, Ossenkopf, V, Roelfsema, P, Stutzki, J & Whyborn, N 2010, 'Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333', Astronomy & Astrophysics, bind 521, L30. https://doi.org/10.1051/0004-6361/201015100

@article{022c05fa115d451a8384b7cb2017d6d0,

title = "Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333",

abstract = "{"}Water In Star-forming regions with Herschel{"} (WISH) is a key programme dedicated to studying the role of water and related species during the star-formation process and constraining the physical and chemical properties of young stellar objects. The Heterodyne Instrument for the Far-Infrared (HIFI) on the Herschel Space Observatory observed three deeply embedded protostars in the low-mass star-forming region NGC 1333 in several H216O, H218O, and CO transitions. Line profiles are resolved for five H216O transitions in each source, revealing them to be surprisingly complex. The line profiles are decomposed into broad (>20 km s-1), medium-broad (∼5-10 km s-1), and narrow (<5 km s-1) components. The H218O emission is only detected in broad 110-101 lines (>20 km s -1), indicating that its physical origin is the same as for the broad H216O component. In one of the sources, IRAS4A, an inverse P Cygni profile is observed, a clear sign of infall in the envelope. From the line profiles alone, it is clear that the bulk of emission arises from shocks, both on small (1000 AU) and large scales along the outflow cavity walls (∼10 000 AU). The H2O line profiles are compared to CO line profiles to constrain the H2O abundance as a function of velocity within these shocked regions. The H2O/CO abundance ratios are measured to be in the range of ∼0.1-1, corresponding to H2O abundances of ∼10-5-10-4 with respect to H 2. Approximately 5-10% of the gas is hot enough for all oxygen to be driven into water in warm post-shock gas, mostly at high velocities.",

keywords = "Astrochemistry, ISM: individual objects: NGC 1333, ISM: jets and outflows, ISM: molecules, stars: formation",

author = "Kristensen, {L. E.} and R. Visser and {Van Dishoeck}, {E. F.} and Yildiz, {U. A.} and Doty, {S. D.} and Herczeg, {G. J.} and Liu, {F. C.} and B. Parise and J{\o}rgensen, {Jes Kristian} and {Van Kempen}, {T. A.} and Christian Brinch and Wampfler, {Susanne Franziska} and S. Bruderer and Benz, {A. O.} and Hogerheijde, {M. R.} and E. Deul and R. Bachiller and A. Baudry and M. Benedettini and Bergin, {E. A.} and Per Bjerkeli and Blake, {G. A.} and S. Bontemps and J. Braine and P. Caselli and J. Cernicharo and C. Codella and F. Daniel and {De Graauw}, Th 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 F. Helmich and F. Herpin and T. Jacq and D. Johnstone and Kaufman, {M. J.} and B. Larsson and D. Lis and R. Liseau and M. Marseille and C. McCoey and G. Melnick and D. Neufeld and B. Nisini and M. Olberg 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 D. Beintema and {De Jonge}, A. and P. Dieleman and V. Ossenkopf and P. Roelfsema and J. Stutzki and N. Whyborn",

year = "2010",

month = oct,

doi = "10.1051/0004-6361/201015100",

language = "English",

volume = "521",

journal = "Astronomy and Astrophysics Supplement Series",

issn = "0004-6361",

publisher = "E D P Sciences",

}

TY - JOUR

T1 - Water in low-mass star-forming regions with Herschel

T2 - HIFI spectroscopy of NGC 1333

AU - Kristensen, L. E.

AU - Visser, R.

AU - Van Dishoeck, E. F.

AU - Yildiz, U. A.

AU - Doty, S. D.

AU - Herczeg, G. J.

AU - Liu, F. C.

AU - Parise, B.

AU - Jørgensen, Jes Kristian

AU - Van Kempen, T. A.

AU - Brinch, Christian

AU - Wampfler, Susanne Franziska

AU - Bruderer, S.

AU - Benz, A. O.

AU - Hogerheijde, M. R.

AU - Deul, E.

AU - Bachiller, R.

AU - Baudry, A.

AU - Benedettini, M.

AU - Bergin, E. A.

AU - Bjerkeli, Per

AU - Blake, G. A.

AU - Bontemps, S.

AU - Braine, J.

AU - Caselli, P.

AU - Cernicharo, J.

AU - Codella, C.

AU - Daniel, F.

AU - De Graauw, Th

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 - Helmich, F.

AU - Herpin, F.

AU - Jacq, T.

AU - Johnstone, D.

AU - Kaufman, M. J.

AU - Larsson, B.

AU - Lis, D.

AU - Liseau, R.

AU - Marseille, M.

AU - McCoey, C.

AU - Melnick, G.

AU - Neufeld, D.

AU - Nisini, B.

AU - Olberg, M.

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 - Beintema, D.

AU - De Jonge, A.

AU - Dieleman, P.

AU - Ossenkopf, V.

AU - Roelfsema, P.

AU - Stutzki, J.

AU - Whyborn, N.

PY - 2010/10

Y1 - 2010/10

N2 - "Water In Star-forming regions with Herschel" (WISH) is a key programme dedicated to studying the role of water and related species during the star-formation process and constraining the physical and chemical properties of young stellar objects. The Heterodyne Instrument for the Far-Infrared (HIFI) on the Herschel Space Observatory observed three deeply embedded protostars in the low-mass star-forming region NGC 1333 in several H216O, H218O, and CO transitions. Line profiles are resolved for five H216O transitions in each source, revealing them to be surprisingly complex. The line profiles are decomposed into broad (>20 km s-1), medium-broad (∼5-10 km s-1), and narrow (<5 km s-1) components. The H218O emission is only detected in broad 110-101 lines (>20 km s -1), indicating that its physical origin is the same as for the broad H216O component. In one of the sources, IRAS4A, an inverse P Cygni profile is observed, a clear sign of infall in the envelope. From the line profiles alone, it is clear that the bulk of emission arises from shocks, both on small (1000 AU) and large scales along the outflow cavity walls (∼10 000 AU). The H2O line profiles are compared to CO line profiles to constrain the H2O abundance as a function of velocity within these shocked regions. The H2O/CO abundance ratios are measured to be in the range of ∼0.1-1, corresponding to H2O abundances of ∼10-5-10-4 with respect to H 2. Approximately 5-10% of the gas is hot enough for all oxygen to be driven into water in warm post-shock gas, mostly at high velocities.

AB - "Water In Star-forming regions with Herschel" (WISH) is a key programme dedicated to studying the role of water and related species during the star-formation process and constraining the physical and chemical properties of young stellar objects. The Heterodyne Instrument for the Far-Infrared (HIFI) on the Herschel Space Observatory observed three deeply embedded protostars in the low-mass star-forming region NGC 1333 in several H216O, H218O, and CO transitions. Line profiles are resolved for five H216O transitions in each source, revealing them to be surprisingly complex. The line profiles are decomposed into broad (>20 km s-1), medium-broad (∼5-10 km s-1), and narrow (<5 km s-1) components. The H218O emission is only detected in broad 110-101 lines (>20 km s -1), indicating that its physical origin is the same as for the broad H216O component. In one of the sources, IRAS4A, an inverse P Cygni profile is observed, a clear sign of infall in the envelope. From the line profiles alone, it is clear that the bulk of emission arises from shocks, both on small (1000 AU) and large scales along the outflow cavity walls (∼10 000 AU). The H2O line profiles are compared to CO line profiles to constrain the H2O abundance as a function of velocity within these shocked regions. The H2O/CO abundance ratios are measured to be in the range of ∼0.1-1, corresponding to H2O abundances of ∼10-5-10-4 with respect to H 2. Approximately 5-10% of the gas is hot enough for all oxygen to be driven into water in warm post-shock gas, mostly at high velocities.

KW - Astrochemistry

KW - ISM: individual objects: NGC 1333

KW - ISM: jets and outflows

KW - ISM: molecules

KW - stars: formation

UR - http://www.scopus.com/inward/record.url?scp=77957678857&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201015100

DO - 10.1051/0004-6361/201015100

M3 - Journal article

AN - SCOPUS:77957678857

SN - 0004-6361

VL - 521

JO - Astronomy and Astrophysics Supplement Series

JF - Astronomy and Astrophysics Supplement Series

M1 - L30

ER -

Water in low-mass star-forming regions with Herschel: HIFI spectroscopy of NGC 1333

Abstract

Emneord

Adgang til dokumentet

Andre filer og links

Fingeraftryk

Citationsformater