Observed structure of the accretion flow around G10. 6-0. 4

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/165949· OSTI ID:5339416

Keto, E R; Ho, P T.P.; Haschick, A D

VLA observations of the molecular gas surrounding the ultracompact H II region G10.6-0.4 in the (J, K) = (1, 1) and (J, K) = (3, 3) inversion lines of NH3 are discussed. In the plane of rotation, the present velocities are found to be well fitted by a model with radial and tangential velocities describing rotation and infall motions which are both increasing with decreasing radial distance. Along the axis of rotation, the flow approximates spherically symmetric, accelerating collapse onto the central source. The total kinetic energy in the rotational and infall motions is shown to be comparable to the gravitational energy within the orbit estimated from the inferred mass. 14 references.

• Research Organization: Harvard Univ., Cambridge, MA (USA); Haystack Observatory, Westford, MA (USA)
• OSTI ID: 5339416
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 324; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102 -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMMONIA
COSMIC GASES
COSMIC RADIO SOURCES
FLUIDS
GASES
GRAVITATIONAL COLLAPSE
H2 REGIONS
HYDRIDES
HYDROGEN COMPOUNDS
INTERSTELLAR SPACE
MOLECULES
NEBULAE
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
SPACE
STAR EVOLUTION