Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....51..289b&link_type=abstract
Astronomy and Astrophysics, vol. 51, no. 2, Sept. 1976, p. 289-302.
Astronomy and Astrophysics
Astronomy
40
Absorption Spectra, Galactic Nuclei, Hydrogen Clouds, Hydroxyl Emission, Radio Astronomy, Astronomical Maps, Astronomical Spectroscopy, Brightness Temperature, Density Distribution, Spatial Distribution, Velocity Distribution
Scientific paper
Spectroscopic aperture synthesis maps of the two galactic center sources Sgr A and Sgr B2 were made in the 1667 MHz line of OH. Two dense molecular clouds with radial velocities of 25 and 45 km/sec are observed in the direction of Sgr A. Each cloud shows a linear change of position with velocity consistent with solid-body rotation with periods of a few million years. If the clouds are gravitationally self-bound, their mean hydrogen number densities must exceed 60,000 and 20,000 per cu cm, respectively, corresponding to masses of a few million solar masses. The distribution of OH in a 60-km/sec feature toward Sgr B2 indicates a possible deficiency of ground state OH relative to CO in the molecular core.
No associations
LandOfFree
Aperture synthesis of 1667 MHz OH absorption in the direction of the galactic center does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aperture synthesis of 1667 MHz OH absorption in the direction of the galactic center, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture synthesis of 1667 MHz OH absorption in the direction of the galactic center will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1412699