Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...315..122g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 315, April 1, 1987, p. 122-141.
Astronomy and Astrophysics
Astrophysics
133
Galactic Structure, Interstellar Matter, Milky Way Galaxy, Molecular Clouds, Angular Distribution, Carbon Monoxide, Line Spectra, Millimeter Waves, Spatial Distribution
Scientific paper
The authors report results from the first large-scale survey in the CO (J = 1→0) line of the Vela-Carina-Centaurus region of the southern Milky Way. The observations, made with the Columbia University 1.2 m telescope at Cerro Tololo, were spaced every beamwidth (0°.125) in the range 270° ≤ l ≤ 300° and -1° ≤ b ≤ 1°, with latitude extensions to cover all Carina arm (l > 280°) emission beyond |b| = 1°. The Carina arm is the dominant feature in the data. Its abrupt tangent at l ≈ 280° and characteristic loop in the (l, v)-diagram are unmistakable evidence for CO spiral structure. Comparison of the CO and H I data shows close agreement in a segment of the arm lying outside the solar circle (R0 = 10 kpc); within R0 the arm is more difficult to trace in H I than in CO.
Bronfman Leonard
Cohen R. S.
Grabelsky David Andrew
May Jorge
Thaddeus Patrick
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