2002A&A...388L..44P


Query : 2002A&A...388L..44P

2002A&A...388L..44P - Astronomy and Astrophysics, volume 388, L44-47 (2002/6-3)

Detection of HD in emission towards Sagittarius B2.

POLEHAMPTON E.T., BALUTEAU J.-P., CECCARELLI C., SWINYARD B.M. and CAUX E.

Abstract (from CDS):

The giant molecular cloud Sagittarius B2, located near the Galactic Centre, has been observed in the far-infrared by the ISO Long Wavelength Spectrometer. Wavelengths in the range 47-196µm were covered with the high resolution Fabry-Perot spectrometer, giving a spectral resolution of 30-40km/s. The J=1->0 and J=2->1 rotational transitions of HD fall within this range at 112µm and 56µm. A probable detection was made of the ground state J=1->0 line in emission but the J=2->1 line was not detected above the noise. This allowed us to calculate an upper limit on the temperature in the emitting region of approximately 80 K and a value for the deuterium abundance in the Sgr B2 envelope of D/H=(0.2-11)x10–6.

Abstract Copyright:

Journal keyword(s): ISM: abundances - galaxy: centre - ISM: molecules - ISM: individual objects: Sagittarius B2

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 821 0
2 NAME Sgr A Region reg 17 45 12 -28 48.3           ~ 935 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13429 0
4 NAME Sgr B2 (North) Rad 17 47 20.2 -28 22 21           ~ 624 1
5 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 2147 1
6 NAME Sgr B2 Main Rad 17 47 20.5 -28 23 06           ~ 380 1
7 W 49n HII 19 10 13.2 +09 06 12           ~ 449 3
8 NAME Galactic Bulge reg ~ ~           ~ 4012 0

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2023.01.27-13:17:20

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