Properties of the dust lane and ionized gas in M84

Details Properties of the dust lane and ionized gas in M84 Properties of the dust lane and ionized gas in M84

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149..442h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 2, Aug. 1985, p. 442-448. Research supported by the Danish Board for

Astronomy and Astrophysics

Astrophysics

35

Cosmic Dust, Elliptical Galaxies, Gas Ionization, Interstellar Gas, Ionized Gases, Virgo Galactic Cluster, Cooling, Coronas, Neutral Gases, Photoionization, X Rays

Scientific paper

The giant elliptical M84 in the Virgo cluster has been observed. By CCD technique a lane of dust and ionized gas crossing the center perpendicular to the radio axis is studied. IDS spectra of the ionized gas resemble those of low ionization nuclear emission-line regions known from several other galaxies. The lane may be the result of gas cooling out of the X-ray corona which fills up the galaxy, but the estimated rate is too low to account for the optical line emission, and the high velocity dispersion 350 km s-1 is larger than expected from shocks following rapid cooling. The observed kinematics of the ionized gas also disagree with models assuming the gas to move in anomalous, trapped orbits in a rotating triaxial potential.

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