1997A&A...322L..33B


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.17CET23:34:32

1997A&A...322L..33B - Astronomy and Astrophysics, volume 322, L33-36 (1997/6-3)

Detection of [O I] 63µm in absorption toward Sgr B2.

BALUTEAU J.-P., COX P., CERNICHARO J., PEQUIGNOT D., CAUX E., LIM T., SWINYARD B., WHITE G., KESSLER M., PRUSTI T., BARLOW M., CLEGG P.E., EMERY R.J., FURNISS I., GLENCROSS W., GRY C., JOUBERT M., LISEAU R., NISINI B., SARACENO P., SERRA G., ARMAND C., BURGDORF M., DI GIORGIO A., MOLINARI S., PRICE M., TEXIER D., SIDHER S. and TRAMS N.

Abstract (from CDS):

A high signal-to-noise 52-90µm spectrum is presented for the central part of the Sagittarius B2 complex. The data were obtained with the Long Wavelength Spectrometer on board the Infrared Space Observatory (ISO). The [O I] 63µm line is detected in absorption even at the grating spectral resolution of 0.29µm. A lower limit for the column density of atomic oxygen of the order of 1019cm–2 is derived. This implies that more than 40% of the interstellar oxygen must be in atomic form along the line of sight toward the Sgr B2 molecular cloud.

Abstract Copyright:

Journal keyword(s): ISM: abundances - (ISM:) dust, extinction - (ISM:) H II regions - ISM: individual objects: Sgr B2 - Infrared: ISM: continuum - Infrared: ISM: lines and bands

Simbad objects: 4

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Number of rows : 4

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 (North) Rad 17 47 20.2 -28 22 21           ~ 504 1
2 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1879 1
3 NAME Sgr B2 Main Rad 17 47 20.5 -28 23 06           ~ 327 1
4 GRS G081.70 +00.50 SFR 20 39 01.6 +42 19 38           O4.5 936 0

    Equat.    Gal    SGal    Ecl

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2020.02.17-23:34:32

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