The Far‐Infrared Spectrum of the Sagittarius B2 Region: Extended Molecular Absorption, Photodissociation, and Photoionization | Zendy

J. R. Goicoechea | Zendy; Nemesio Rodríguez-Fernández | Zendy; J. Cernicharo | Zendy

Open Access

The Far‐Infrared Spectrum of the Sagittarius B2 Region: Extended Molecular Absorption, Photodissociation, and Photoionization

Author(s) -

J. R. Goicoechea,

Nemesio Rodríguez-Fernández,

J. Cernicharo

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/379704

Subject(s) - opacity , physics , photoionization , ionization , far infrared , infrared , photodissociation , molecular cloud , emission spectrum , absorption spectroscopy , spectral line , absorption (acoustics) , astrophysics , atomic physics , ion , chemistry , optics , photochemistry , astronomy , stars , quantum mechanics

We present large scale 9'x 27'(25 pc x 70 pc) far-IR observations around Sgr B2 using the Long-wavelength spectrometer (LWS) on board the Infrared Space Observatory (ISO). The spectra are dominated by the strong continuum emission of dust, the widespread molecular absorption of light hydrides (OH, CH and H2O) and the fine structure lines of [NII], [NIII], [OIII], [CII] and [OI]. The molecular richness in the outer layers of Sgr B2 is probed by the ISO-LWS Fabry-Perot (35 km s^-1) detections towards Sgr B2(M), where more that 70 lines from 15 molecular and atomic species are observed at high signal to noise ratio.Peer reviewe

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