Carbon monoxide in the inner Galaxy
1977; IOP Publishing; Volume: 216; Linguagem: Inglês
10.1086/155478
ISSN1538-4357
Autores Tópico(s)Astrophysics and Cosmic Phenomena
Resumoview Abstract Citations (216) References (51) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Carbon monoxide in the inner Galaxy. Bania, T. M. Abstract A survey of the inner Galaxy in the 2.6-mm spectral line of (C-12)(O-16) is reported which was performed along the galactic equator over the longitude range from 10 to 352 deg with a longitude spacing of 0.2 deg. The observational techniques are discussed, the survey data are presented, and the major kinematic features seen in CO are identified. The large-scale distribution of CO in the inner Galaxy is analyzed, and an approximate relation is developed for the column density of molecular hydrogen as implied by the CO data. The survey indicates that: (1) the observed CO emission is more clumped in (longitude, velocity) space than 21-cm emission and probably originates in dark molecular clouds; (2) the large-scale CO features identified in the nuclear region contain large amounts of atomic hydrogen: (3) all large-scale CO kinematic features are also seen in H I; (4) the bulk of the CO is moving according to the observed H I rotation curve; (5) there is a dense concentration of CO in the galactic nucleus; and (6) the major CO emission features detected are the 3-kpc arm and the nuclear disk. Publication: The Astrophysical Journal Pub Date: September 1977 DOI: 10.1086/155478 Bibcode: 1977ApJ...216..381B Keywords: Carbon Monoxide; Galactic Structure; Interstellar Gas; Milky Way Galaxy; Spatial Distribution; Astronomical Maps; Emission Spectra; Galactic Nuclei; Hydrogen; Kinematics; Radio Sources (Astronomy); Astrophysics full text sources ADS | data products SIMBAD (3)
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