Neutral hydrogen in the vicinity of galactic radio sources. II - Model of the interaction of H II regions with an interstellar medium

Details Neutral hydrogen in the vicinity of galactic radio sources. II - Model of the interaction of H II regions with an interstellar medium Neutral hydrogen in the vicinity of galactic radio sources. II - Model of the interaction of H II regions with an interstellar medium

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.107..289g&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 107, no. 2, Dec. 1984, p. 289-302.

Astronomy and Astrophysics

Astronomy

3

Galactic Radio Waves, H Ii Regions, Interstellar Matter, Neutral Gases, Radio Sources (Astronomy), Centimeter Waves, Mass Spectra, Stellar Mass, Stellar Winds

Scientific paper

In the preceding paper by Venger et al. (1984) the results of observations of neutral gas in the vicinity of some galactic Hil regions were considered; and it was demonstrated that 17 of the regions observed are surrounded by expanding Hi envelopes. This paper describes a model of interaction between the H II regions and the surrounding interstellar medium constructed on the basis of the said results. It is assumed that the main dynamic factor in the envelope formation mechanism is the total stellar wind from the stars which ionze the Hii regions. The employment of the observations of the line at). = 21 cm, of the radio continuum and JR dust continuum made it possible to determine the differential mass spectra of the stars exciting the Hii zones and calculate some characteristics of the stellar population. The mass spectrum index of the objects considered turned out to be much higher than that for the mass spectra of background stars and scattered clusters of stars

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