An Ionized Accretion Flow in the Ultracompact HII Region G10.6-0.4

Details An Ionized Accretion Flow in the Ultracompact HII Region G10.6-0.4 An Ionized Accretion Flow in the Ultracompact HII Region G10.6-0.4

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aspc..267...51k&link_type=abstract

Hot Star Workshop III: The Earliest Stages of Massive Star Birth. ASP Conference Proceedings, Vol. 267. Edited by Paul A. Crowth

Astronomy and Astrophysics

Astronomy

Scientific paper

Analysis of the H66alpha radio recombination line velocities in the ultracompact HII region G10.6-0.4 indicates inward motion of the ionized gas within the HII region. Comparison with the velocities of molecular lines from the surrounding neutral gas suggests that a molecular accretion flow passes through the ionization boundary of the HII region and continues inward as an ionized accretion flow. Interpreted in the context of a model for star formation in hot molecular cores (HMC) these observations indicate that G10.6-0.4 is at a stage of development just after the massive star or stars at the center of the accretion flow have first formed an ionized HII region within the hot molecular core.

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