A neutral hydrogen study of the spiral galaxy NGC 4736

Details A neutral hydrogen study of the spiral galaxy NGC 4736 A neutral hydrogen study of the spiral galaxy NGC 4736

May 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....57..373b&link_type=abstract

Astronomy and Astrophysics, vol. 57, no. 3, May 1977, p. 373-381. Research supported by the Nederlandse Organisatie voor Zuiver

Astronomy and Astrophysics

Astrophysics

81

Galactic Structure, Hydrogen Clouds, Interstellar Gas, Spatial Distribution, Spiral Galaxies, Astronomical Maps, Galactic Rotation, Velocity Distribution

Scientific paper

The Sab galaxy NGC 4736 has been synthesized in the 21-cm H I lines, with the 21-cm continuum map exhibiting disk emission at a level of about 3 K in brightness temperature and of about 5 kpc extent. Neutral hydrogen is found not only in the main optically bright section of the galaxy, but also coincident with a faint outer ring surrounding the galaxy. The H I velocities indicate that the gas in the outer ring partakes of basically the same kinematics as the gas in the main galaxy.

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