Odin observations of H2O in the Galactic Centre

Aa. Sandqvist; P. Bergman; J. H. Black; R. Booth; V. Buat; C. L. Curry; P. Encrenaz; E. Falgarone; P. Feldman; M. Fich; H. G. Floren; U. Frisk; M. Gerin; E. M. Gregersen; J. Harju; T. Hasegawa; A. Hjalmarson; L. E. B. Johansson; S. Kwok; B. Larsson; N. F. H. Tothill

doi:10.1051/0004-6361:20030341

Odin observations of H2O in the Galactic Centre

Aa. Sandqvist, P. Bergman, J. H. Black, R. Booth, V. Buat, C. L. Curry, P. Encrenaz, E. Falgarone, P. Feldman, M. Fich, H. G. Floren, U. Frisk, M. Gerin, E. M. Gregersen, J. Harju, T. Hasegawa, A. Hjalmarson, L. E. B. Johansson, S. Kwok, B. LarssonN. F. H. Tothill

School of Science

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

The Odin satellite has been used to detect emission and absorption in the 557-GHz H 216O line in the Galactic Centre towards the SgrA* Circumnuclear Disk (CND), and the SgrA +20 km s -1 and +50 km s -1 molecular clouds. Strong broad H 2O emission lines have been detected in all three objects. Narrow H 2O absorption lines are present at all three positions and originate along the lines of sight in the 3-kpc Spiral Arm, the -30 km s -1 Spiral Arm and the Local Sgr Spiral Arm. Broad H 2O absorption lines near -130 km s -1 are also observed, originating in the Expanding Molecular Ring. A new molecular feature (the "High Positive Velocity Gas" - HPVG) has been identified in the positive velocity range of $\\approx$+120 to +220 km s -1, seen definitely in absorption against the stronger dust continuum emission from the +20 km s -1 and +50 km s -1 clouds and possibly in emission towards the position of SgrA* CND. The 548-GHz H 218O isotope line towards the CND is not detected at the 0.02 K (rms) level. (Note: Some of the scientific symbols can not be represented correctly in the abstract. Please read with caution and refer to the original publication.)

Original language	English
Pages (from-to)	L63-L67
Number of pages	5
Journal	Astronomy and Astrophysics
Volume	402
Issue number	3
DOIs	https://doi.org/10.1051/0004-6361:20030341
Publication status	Published - 2003

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Sandqvist, A., Bergman, P., Black, J. H., Booth, R., Buat, V., Curry, C. L., Encrenaz, P., Falgarone, E., Feldman, P., Fich, M., Floren, H. G., Frisk, U., Gerin, M., Gregersen, E. M., Harju, J., Hasegawa, T., Hjalmarson, A., Johansson, L. E. B., Kwok, S., ... Tothill, N. F. H. (2003). Odin observations of H2O in the Galactic Centre. Astronomy and Astrophysics, 402(3), L63-L67. https://doi.org/10.1051/0004-6361:20030341

@article{6ef07db5f82f4e79b58fb9889b07686b,

title = "Odin observations of H2O in the Galactic Centre",

abstract = "The Odin satellite has been used to detect emission and absorption in the 557-GHz H 216O line in the Galactic Centre towards the SgrA* Circumnuclear Disk (CND), and the SgrA +20 km s -1 and +50 km s -1 molecular clouds. Strong broad H 2O emission lines have been detected in all three objects. Narrow H 2O absorption lines are present at all three positions and originate along the lines of sight in the 3-kpc Spiral Arm, the -30 km s -1 Spiral Arm and the Local Sgr Spiral Arm. Broad H 2O absorption lines near -130 km s -1 are also observed, originating in the Expanding Molecular Ring. A new molecular feature (the {"}High Positive Velocity Gas{"} - HPVG) has been identified in the positive velocity range of $\\approx$+120 to +220 km s -1, seen definitely in absorption against the stronger dust continuum emission from the +20 km s -1 and +50 km s -1 clouds and possibly in emission towards the position of SgrA* CND. The 548-GHz H 218O isotope line towards the CND is not detected at the 0.02 K (rms) level. (Note: Some of the scientific symbols can not be represented correctly in the abstract. Please read with caution and refer to the original publication.)",

author = "Aa. Sandqvist and P. Bergman and Black, {J. H.} and R. Booth and V. Buat and Curry, {C. L.} and P. Encrenaz and E. Falgarone and P. Feldman and M. Fich and Floren, {H. G.} and U. Frisk and M. Gerin and Gregersen, {E. M.} and J. Harju and T. Hasegawa and A. Hjalmarson and Johansson, {L. E. B.} and S. Kwok and B. Larsson and Tothill, {N. F. H.}",

year = "2003",

doi = "10.1051/0004-6361:20030341",

language = "English",

volume = "402",

pages = "L63--L67",

journal = "Astronomy and Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "3",

}

Sandqvist, A, Bergman, P, Black, JH, Booth, R, Buat, V, Curry, CL, Encrenaz, P, Falgarone, E, Feldman, P, Fich, M, Floren, HG, Frisk, U, Gerin, M, Gregersen, EM, Harju, J, Hasegawa, T, Hjalmarson, A, Johansson, LEB, Kwok, S, Larsson, B & Tothill, NFH 2003, 'Odin observations of H2O in the Galactic Centre', Astronomy and Astrophysics, vol. 402, no. 3, pp. L63-L67. https://doi.org/10.1051/0004-6361:20030341

TY - JOUR

T1 - Odin observations of H2O in the Galactic Centre

AU - Sandqvist, Aa.

AU - Bergman, P.

AU - Black, J. H.

AU - Booth, R.

AU - Buat, V.

AU - Curry, C. L.

AU - Encrenaz, P.

AU - Falgarone, E.

AU - Feldman, P.

AU - Fich, M.

AU - Floren, H. G.

AU - Frisk, U.

AU - Gerin, M.

AU - Gregersen, E. M.

AU - Harju, J.

AU - Hasegawa, T.

AU - Hjalmarson, A.

AU - Johansson, L. E. B.

AU - Kwok, S.

AU - Larsson, B.

AU - Tothill, N. F. H.

PY - 2003

Y1 - 2003

N2 - The Odin satellite has been used to detect emission and absorption in the 557-GHz H 216O line in the Galactic Centre towards the SgrA* Circumnuclear Disk (CND), and the SgrA +20 km s -1 and +50 km s -1 molecular clouds. Strong broad H 2O emission lines have been detected in all three objects. Narrow H 2O absorption lines are present at all three positions and originate along the lines of sight in the 3-kpc Spiral Arm, the -30 km s -1 Spiral Arm and the Local Sgr Spiral Arm. Broad H 2O absorption lines near -130 km s -1 are also observed, originating in the Expanding Molecular Ring. A new molecular feature (the "High Positive Velocity Gas" - HPVG) has been identified in the positive velocity range of $\\approx$+120 to +220 km s -1, seen definitely in absorption against the stronger dust continuum emission from the +20 km s -1 and +50 km s -1 clouds and possibly in emission towards the position of SgrA* CND. The 548-GHz H 218O isotope line towards the CND is not detected at the 0.02 K (rms) level. (Note: Some of the scientific symbols can not be represented correctly in the abstract. Please read with caution and refer to the original publication.)

AB - The Odin satellite has been used to detect emission and absorption in the 557-GHz H 216O line in the Galactic Centre towards the SgrA* Circumnuclear Disk (CND), and the SgrA +20 km s -1 and +50 km s -1 molecular clouds. Strong broad H 2O emission lines have been detected in all three objects. Narrow H 2O absorption lines are present at all three positions and originate along the lines of sight in the 3-kpc Spiral Arm, the -30 km s -1 Spiral Arm and the Local Sgr Spiral Arm. Broad H 2O absorption lines near -130 km s -1 are also observed, originating in the Expanding Molecular Ring. A new molecular feature (the "High Positive Velocity Gas" - HPVG) has been identified in the positive velocity range of $\\approx$+120 to +220 km s -1, seen definitely in absorption against the stronger dust continuum emission from the +20 km s -1 and +50 km s -1 clouds and possibly in emission towards the position of SgrA* CND. The 548-GHz H 218O isotope line towards the CND is not detected at the 0.02 K (rms) level. (Note: Some of the scientific symbols can not be represented correctly in the abstract. Please read with caution and refer to the original publication.)

UR - http://handle.uws.edu.au:8081/1959.7/548885

U2 - 10.1051/0004-6361:20030341

DO - 10.1051/0004-6361:20030341

M3 - Article

SN - 0004-6361

VL - 402

SP - L63-L67

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 3

ER -

Odin observations of H2O in the Galactic Centre

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