Molecular gas within 2 deg of the Galactic center. I - Survey of (C-13)O emission

Details Molecular gas within 2 deg of the Galactic center. I - Survey of (C-13)O emission Molecular gas within 2 deg of the Galactic center. I - Survey of (C-13)O emission

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...314..747h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 314, March 15, 1987, p. 747-765.

Astronomy and Astrophysics

Astrophysics

36

Carbon Monoxide, Galactic Nuclei, Interstellar Gas, Milky Way Galaxy, Molecular Clouds, Astronomical Coordinates, Astronomical Maps, Galactic Structure, Temperature Distribution

Scientific paper

The emission from the Galactic center at 2.72 mm from (C-13)O has been surveyed, and the results are reported. Data from 488 spectra taken in the region of l between -2.0 deg and +2.0 deg and b between -0.467 deg and +0.467 deg, and with a spectral resolution of 2.7 km/s over the V(LSR) range of -300 km/s to +300 km/s, are presented in eight l-v diagrams and in 123 maps in the plane of the sky. An averaged l-v diagram shows that virtually all of the (C-13)O emission falls within a roughly symmetrical parallelogram in l-v space; the center of symmetry is near l = +0.25 deg, V(LSR) = +30 km/s. A map of the integrated (C-13)O is presented which is very similar to maps of the far-IR continuum in which Sgr A, B2, C, and D are prominent. Maps of the emission at absolute value of V(LSR) above 100 km/s show that most of the high-velocity gas is tilted out of the Galactic plane by 7 deg; the nuclear disk appears to be inclined to the line of sight by about 85 deg.

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