Observations of the photodissociated HI region that surrounds G213.880-11.837

Details Observations of the photodissociated HI region that surrounds G213.880-11.837 Observations of the photodissociated HI region that surrounds G213.880-11.837

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011rmxac..40..181r&link_type=abstract

XIII Latin American Regional IAU Meeting (Eds. W. J. Henney & S. Torres-Peimbert) Revista Mexicana de Astronomía y Astrofísica (

Other

Hii Regions, Radio Lines: Ism

Scientific paper

New observations of the HI 21 cm line toward the cometary HII region G213.880-11.837 are presented. These observations, carried out with an angular resolution of 15'', reveal that the neutral gas in this region is part of an expanding flow. The analysis of the kinematics of the HI gas suggests that the HI gas is undergoing a champagne flow: based on the difference between the radial velocities of the neutral gas in the tail ( 4km s^{-1}) compared to the velocities of the ambient molecular gas ( 11.5 km s^{-1}) and the asymmetry of the HI emission. Besides this photodissociated region, there is only one other reported following an HI champagne flow (G111.61+0.37).

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