H I observations of high-luminosity elliptical galaxies

Astronomy and Astrophysics – Astronomy

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Elliptical Galaxies, Galactic Evolution, Hydrogen Clouds, Line Spectra, Luminosity, Radio Astronomy, Centimeter Waves, Mass To Light Ratios, Spectral Line Width, Spiral Galaxies

Scientific paper

Sensitive H I line observations were made with wide velocity coverage of a sample of high-luminosity early-type galaxies which included two edge-on S0 galaxies (NGC 4762 and 5866), one tidally interacting pair (NGC 4105 and 4106), and five high-luminosity ellipticals (NGC 2974, 3904, 3962, 4472, and 5322). H I was detected from only one object, the close pair NGC 4105/6; and previously claimed detections of H I in three ellipticals (NGC 2974, 3904, and 3962) were not confirmed. Low limits were set on the H I content of the luminous ellipticals NGC 4472 and 5322.

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