Distribution and kinematics of H I gas in the Virgo cluster galaxies NGC 4318 and VCC 566

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Dwarf Galaxies, Elliptical Galaxies, Gas Dynamics, H I Regions, Interstellar Gas, Virgo Galactic Cluster, Galactic Mass, Irregular Galaxies, Radial Velocity, Radio Telescopes

Scientific paper

A region of the Virgo cluster centered on the elliptical galaxy NGC 4318 was mapped in the 21-cm H I line at Westerbork with a resolution of 13arcsec×95arcsec, and with the 4arcmin×22arcmin beam of the Nançay radiotelescope. The authors found no H I associated with NGC 4318, which appears to be a small gas-poor elliptical. All H I detected at Westerbork is concentrated in the nearby gas-rich dwarf galaxy VCC 566 and no sign of interaction is apparent between the elliptical and the dwarf galaxy.

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