The Optical Structure of IIZW40

Details The Optical Structure of IIZW40 The Optical Structure of IIZW40

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..535b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 198, P. 535, 1982

Astronomy and Astrophysics

Astronomy

50

Scientific paper

New data are presented on the morphology and ionization structure and kinematics of II Zw 40, a "detached extragalactic H II region". They show a core-halo structure with the ionizing stars embedded in a small nucleus and a halo composed of small optically thick filaments. Direct plates show two tails protruding from this halo. This optical structure is interpreted as an interaction between two extremely small galaxies. This encounter would then be the cause of the present burst of star formation.

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