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

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

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002apj...568..754k&link_type=abstract

The Astrophysical Journal, Volume 568, Issue 2, pp. 754-760.

Astronomy and Astrophysics

Astronomy

44

Accretion, Accretion Disks, Ism: H Ii Regions, Stars: Individual: Alphanumeric: G10.6-0.4

Scientific paper

Analysis of the H66α radio recombination line velocities in the ultracompact H II region G10.6-0.4 indicates inward motion of the ionized gas within the H II 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 H II region and continues inward as an ionized accretion flow. Interpreted in the context of a model for star formation in hot molecular cores, 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 H II region within the hot molecular core.

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