Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.188..445w&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 188, Aug. 1979, p. 445-462.
Astronomy and Astrophysics
Astronomy
41
Absorption Spectra, Formaldehyde, Galactic Nuclei, Milky Way Galaxy, Astronomical Maps, Continuous Spectra, Galactic Structure, Molecular Spectra, Radio Astronomy
Scientific paper
A 6-cm H2CO survey between 358.6 and 2.8 deg galactic longitude and from -0.2 to +0.1 deg galactic latitude has been made with the Parkes 64-m radio telescope (beamwidth 4.4 arcmin). Radial velocities between -260 and +360 km/s were covered with a velocity resolution of 2.4 km/s. H2CO absorption and line/continuum radio data are presented in the form of velocity-longitude contour maps. These maps indicate continuous features associated with extended cloud complexes (some even on the far side of the Galactic Center) which have been previously detected in H I or molecular-line surveys. In addition, there appears to be a continuous feature with positive velocities that are low near Sgr A, reach +100 km/s near 1 deg galactic longitude, and approach zero beyond 2.5 deg longitude. However, its interpretation in terms of gas outflow from a rotating galactic nucleus presents difficulties.
Gardner Frank F.
Whiteoak John B.
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