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. Larsson

N. 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 \$\textbackslash{}\textbackslash{}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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