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Molecular Clouds in the Galactic Nucleus

Published online by Cambridge University Press:  04 August 2017

R. J. Cohen  and
W. R. F. Dent
R. J. Cohen
Affiliation:
University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire, SK11 9DL England
W. R. F. Dent
Affiliation:
University of Manchester, Nuffield Radio Astronomy Laboratories, Jodrell Bank, Macclesfield, Cheshire, SK11 9DL England

Extract

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The galactic nucleus contains the largest concentration of dense molecular clouds in the Galaxy. A new survey of the region has been carried out recently at Jodrell Bank in the 1667 and 1665 MHz lines of OH (Cohen 1981). The OH lines appear primarily in absorption against the galactic continuum background. The survey reveals many new clouds within the previously known nuclear concentration, and also a more extensive outer distribution of clouds extending to projected distances of ±1 kpc from the centre. The outer part of the distribution is tilted with respect to the galactic plane, reaching z-distances of −200 pc at positive longitudes and +200 pc at negative longitudes. The same tilt or warp has been seen in the high-velocity HI “nuclear disk”.

Type
I. Kinematics of Gas and the Underlying Mass Distribution
Information
Symposium - International Astronomical Union , Volume 100: Internal Kinematics and Dynamics of Galaxies , 1983 , pp. 47 - 48
Copyright
Copyright © Reidel 1983 

References

Burton, W.B. and Liszt, H.S., 1978. Astrophys. J., 225, pp 815–842.Google Scholar
Cohen, R.J., 1981. QMC Conference on “Submillimetre Wave Astronomy”, eds. Beckman, J. and Phillips, J., Cambridge University Press, in press.Google Scholar
Cohen, R.J. and Few, R.W., 1976. Mon. Not. R. astr. Soc., 176, pp. 495–523.Google Scholar
Liszt, H.S. and Burton, W.B., 1980. Astrophys. J., 236, pp. 779–797.CrossRefGoogle Scholar
Peters, W.L., 1975. Astrophys. J., 195, pp. 617–629.Google Scholar