An H 167 alpha line map of the extended H II region S 252 /NGC 2175/

Details An H 167 alpha line map of the extended H II region S 252 /NGC 2175/ An H 167 alpha line map of the extended H II region S 252 /NGC 2175/

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....89..363d&link_type=abstract

Astronomy and Astrophysics, vol. 89, no. 3, Sept. 1980, p. 363-369. Consiglio Nazionale delle Ricerche

Astronomy and Astrophysics

Astronomy

8

Astronomical Maps, H Alpha Line, H Ii Regions, Nebulae, Radio Sources (Astronomy), Electron Energy, Gas Dynamics, Ionized Gases, Molecular Clouds

Scientific paper

The recombination line H 167α has been observed in 21 selected positions of the H:: region S252. The T*e and VLSR dependence on the position has been studied and related to the morphology of the region where the exciting star is at the center of the ionized gas and a molecular cloud is located on the west border. There is an increase of T*e from the west to the east side which can be only partially explained by a density model. The VLSR shows a decrease from the molecular cloud to the outer ionized gas. This trend qualitatively agrees with a champagne model of a gas flow from the surface of a molecular cloud.

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