Neutral hydrogen in NGC 1023 and IC 239

Details Neutral hydrogen in NGC 1023 and IC 239 Neutral hydrogen in NGC 1023 and IC 239

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.187..537a&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 187, May 1979, p. 537-551.

Astronomy and Astrophysics

Astronomy

4

Astronomical Maps, Hydrogen Clouds, Interstellar Gas, Neutral Gases, Spiral Galaxies, Astronomical Coordinates, Continuous Radiation, Radial Velocity, Spatial Distribution, Velocity Distribution

Scientific paper

The neutral hydrogen distributions in the lenticular SB0 galaxy NGC 1023 and the Scd galaxy IC 239 have been mapped with the Cambridge Half-Mile telescope. The hydrogen in NGC 1023 is observed out to the Holmberg radius and is found to rotate, but the H I distribution is asymmetrical. In the nearby galaxy IC 239, hydrogen is detected to more than twice the Holmberg radius. The H I distribution is warped and exhibits non-circular motions.

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