Detection of CO in the elliptical galaxy NGC 4472

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Carbon Monoxide, Elliptical Galaxies, Interstellar Matter, Line Spectra, Velocity Distribution, Virgo Galactic Cluster

Scientific paper

A detection of CO (1-0) in the Virgo cluster galaxy NGC 4472 at a position 1arcmin south of the nucleus is reported. The corresponding H2 mass is 2.1×107M_sun;. The gas at this off central position has a velocity and velocity dispersion different from that of the stellar component, properties consistent with X-ray cooling flow expectations. Additional observations of NGC 4472 in the CO (2-1) line yield only an upper limit.

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