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

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

Jun 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...322l..33b&link_type=abstract

Astronomy and Astrophysics, v.322, p.L33-L36

Astronomy and Astrophysics

Astrophysics

42

Ism: Abundances, (Ism:) Dust, Extinction, (Ism:) H Ii Regions, Ism: Individual Objects: Sgr B2, Infrared: Ism: Continuum, Infrared: Ism: Lines And Bands

Scientific paper

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 10^19^cm^-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.

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