Temperature and density structure of the collapsing core of G10.6-0.4

Details Temperature and density structure of the collapsing core of G10.6-0.4 Temperature and density structure of the collapsing core of G10.6-0.4

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...318..712k&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 318, July 15, 1987, p. 712-728.

Astronomy and Astrophysics

Astrophysics

64

Astronomical Spectroscopy, Density Distribution, Gravitational Collapse, Molecular Clouds, Temperature Distribution, Ammonia, Astronomical Maps, H Ii Regions, Line Spectra, Red Shift, Star Formation

Scientific paper

The authors report on high-resolution 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 observations have suggested that the molecular gas around this source is gravitationally collapsing onto the central star or stars. The new data improve the identifications of the dynamical features. Maps of the NH3 rotational temperature and column density across the collapsing region show a hot, centrally condensed molecular core 0.1 pc in diameter with n(H2) = 4×106cm-3. The H II region embedded in the condensed core is heating the surrounding gas. The data indicate that a rotational motion is superposed on the infall velocity of the cloud. The velocity gradients are consistent with Keplerian rotation. The rotational velocity at 0.05 pc is about the same as the infall velocity at this radius indicating that the infalling gas may be spiraling in sharply toward the H II region.

Affiliated with

Also associated with

No associations

Rating

Temperature and density structure of the collapsing core of G10.6-0.4 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 Temperature and density structure of the collapsing core of G10.6-0.4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature and density structure of the collapsing core of G10.6-0.4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-789760