2003A&A...402L..63S


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST22:01:30

2003A&A...402L..63S - Astronomy and Astrophysics, volume 402, L63-67 (2003/5-2)

Odin observations of H2O in the Galactic Centre.

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., LARSSON B., LECACHEUX A., LILJESTROEM T., LINDQVIST M., LISEAU R., MATTILA K., MITCHELL G.F., NORDH L., OLBERG M., OLOFSSON A.O.H., OLOFSSON G., PAGANI L., PLUME R., RISTORCELLI I., VON SCHEELE F., SERRA G., TOTHILL N.F.H., VOLK K., WILSON C.D. and WINNBERG A.

Abstract (from CDS):

The Odin satellite has been used to detect emission and absorption in the 557-GHz H216O line in the Galactic Centre towards the Sgr A* Circumnuclear Disk (CND), and the Sgr A +20km/s and +50km/s molecular clouds. Strong broad H2O emission lines have been detected in all three objects. Narrow H2O absorption lines are present at all three positions and originate along the lines of sight in the 3-kpc Spiral Arm, the -30km/s Spiral Arm and the Local Sgr Spiral Arm. Broad H2O absorption lines near -130km/s 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 ≃+120 to +220km/s, seen definitely in absorption against the stronger dust continuum emission from the +20km/s and +50km/s clouds and possibly in emission towards the position of Sgr A* CND. The 548-GHz H218O isotope line towards the CND is not detected at the 0.02K (rms) level.

Abstract Copyright:

Journal keyword(s): Galaxy: center - ISM: individual objects: Sgr A - ISM: molecules - ISM: clouds

Simbad objects: 7

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Number of rows : 7

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 916 0
2 NAME Sgr A West HII 17 45 39.4 -29 00 24           ~ 351 0
3 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 3446 3
4 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11533 0
5 NAME Sgr A East Rad 17 45 41 -29 00.8           ~ 444 2
6 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1909 1
7 NAME Sgr Arm PoG 19 00 -30.0           ~ 523 1

    Equat.    Gal    SGal    Ecl

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2020.07.04-22:01:30

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