Broadband 21-cm H I emission from Stephan's Quintet

Details Broadband 21-cm H I emission from Stephan's Quintet Broadband 21-cm H I emission from Stephan's Quintet

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....89l...3s&link_type=abstract

Astronomy and Astrophysics, vol. 89, no. 1-2, Sept. 1980, p. L3-L5.

Astronomy and Astrophysics

Astronomy

6

Centimeter Waves, Galactic Clusters, Galactic Radiation, H Lines, Hydrogen Clouds, Radio Sources (Astronomy), Angular Resolution, Broadband, Emission Spectra, Neutral Gases, Red Shift

Scientific paper

Recent observations of broadband H I emission over the range of redshifts 5600-6800 km/sec at the position of NGC 7318a/b in Stephan's Quintet of galaxies are discussed. It is argued that this emission, at a level of 8 mJy, coupled with an observed narrowband offset H I cloud and other observations of broadband emission, provides further evidence for a high degree of interaction among the galaxies NGC 7318a, 7318b and 7319. The interaction is supposed to have created a large cloud of neutral hydrogen with a 1000 km/sec range in redshift of extent approximately 100 kpc and mass approximately 5 x 10 to the 10th solar masses enveloping the galaxies.

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