Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...309..403m&link_type=abstract
Astronomy and Astrophysics, v.309, p.403-412
Astronomy and Astrophysics
Astrophysics
19
Galaxies: Individual: Ngc 3310, Galaxies: Kinematics And Dynamics, Galaxies: Peculiar, Galaxies: Starburst, Galaxies: Structure
Scientific paper
The peculiar Sbc-type starburst galaxy NGC 3310 (= Arp 217) was observed with the Taurus imaging spectrometer in the Hα emission line and imaged directly in the B, V, R and I bands with a Schmidt telescope and a wide-field CCD camera. High-resolution maps of the distribution and velocity field of the ionised gas were constructed from the Taurus data, fully covering the inner ~1.4' of radius and the entire velocity range of the gas. The deep CCD images clearly show a complex system of faint, extended shells or arc-like structures at large radii (~1' to 3') around the galaxy. The Hα velocity data agree well with published spectroscopy and with recent Hi results. The existence of two near-nuclear areas of clearly non-Gaussian emission line profiles, reported recently from long-slit Hα work, is confirmed and the areas are more precisely delineated. These features are due to gas streaming along the strong spiral shocks in the inner regions.
Driel Wim van
Mulder P. S.
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