Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..151c&link_type=abstract
In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 151-152 (SEE N93-26706 10-90)
Astronomy and Astrophysics
Astronomy
Gas Dynamics, H Ii Regions, Ionized Gases, Massive Stars, Star Formation, Starburst Galaxies, Astronomical Spectroscopy, Hydrogen, Star Clusters
Scientific paper
Giant extragalactic H2 regions (GEHR) are centers of active star formation, ionized by populous clusters of OB stars. These objects are characterized by their low electron density, linear dimensions of order of 10(exp 2) - 10(exp 3) pc, varied morphology, and inhomogeneous distribution of the gas. They are ideal laboratories to study the processes of interaction between the gas and the stars, that could then be extended to the study of H2 and starburst galaxies. An observational program on a selected group of giant H2 regions with the use of one- and two-dimensional spectroscopy is being conducted. Our aim is two-fold: to understand the internal structure of the regions and to study the kinematics and dynamics of the ionized gas. A short report of our ongoing research is presented.
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