2003A&A...406L..47P


C.D.S. - SIMBAD4 rel 1.7 - 2020.09.19CEST05:00:59

2003A&A...406L..47P - Astronomy and Astrophysics, volume 406, L47-50 (2003/8-1)

Far-infrared detection of 17OH towards Sagittarius B2.

POLEHAMPTON E.T., BROWN J.M., SWINYARD B.M. and BALUTEAU J.-P.

Abstract (from CDS):

The frequencies and line strengths of the 2Π3/2 J=5/2-3/2 rotational transition of 17OH have been calculated from an analysis of its far-infrared laser magnetic resonance spectrum. These results have been used to make the first detection of a pure rotational transition of 17OH in the ISM. Two resolved components of this transition appear in absorption towards the giant molecular cloud Sagittarius B2, which was observed at a spectral resolution of 33km/s with the Fabry-Perot mode of the ISO Long Wavelength Spectrometer. The corresponding transition of 18OH was also observed and its line shape was modelled using HI measurements. The 18O/17O ratio of 3.5 was then used to compare this with the observed 17OH line shape.

Abstract Copyright:

Journal keyword(s): infrared: ISM - molecular data - ISM: molecules - line: identification - ISM: individual objects: Sagittarius B2

VizieR on-line data: <Available at CDS (J/A+A/406/L47): freq17oh.dat>

Simbad objects: 2

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Number of rows : 2

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 B2 MoC 17 47 20.4 -28 23 07           ~ 1931 1
2 NAME Sgr B2 Main Rad 17 47 20.5 -28 23 06           ~ 334 1

    Equat.    Gal    SGal    Ecl

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2020.09.19-05:00:59

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