The observed structure of the accretion flow around G10.6-0.4

Details The observed structure of the accretion flow around G10.6-0.4 The observed structure of the accretion flow around G10.6-0.4

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324..920k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 15, 1988, p. 920-930.

Astronomy and Astrophysics

Astrophysics

69

Gravitational Collapse, Interstellar Gas, Molecular Clouds, Molecular Gases, Nebulae, Stellar Evolution, Ammonia, Gas Temperature, Line Of Sight, Optical Thickness

Scientific paper

The authors report on very high resolution (0arcsec.3) aperture synthesis observations of the molecular gas surrounding the ultracompact H II region G 10.6-0.4 in the (J, K) = (1, 1) and (J, K) = (3, 3) inversion lines of NH3. Previous lower angular resolution observations suggest that the molecular gas is gravitationally collapsing onto the H II region. Maps made with a spatial resolution of better than 0.014 pc resolve the accretion flow of the molecular gas onto the central H II region and show that the flow field is characterized by differential rotation and accelerating infall. The kinetic energy in the rotational and infall velocities at each measured orbit is comparable to the gravitational energy.

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