Light-emitting gas in radio galaxies

Details Light-emitting gas in radio galaxies Light-emitting gas in radio galaxies

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989s%26w....28..292m&link_type=abstract

Sterne und Weltraum (ISSN 0039-1263), vol. 28, May 1989, p. 292-294. In German.

Physics

Galactic Radiation, Interstellar Gas, Radio Galaxies, Elliptical Galaxies, Filaments, H Alpha Line, Photographic Plates, Synchrotron Radiation, Virgo Galactic Cluster

Scientific paper

Images of light-emitting gaseous structures in giant elliptical galaxies, obtained using a Fabry-Perot interferometer setup with CCD detector at the primary focus of the 3.5-m telescope at Calar Alto, are presented and discussed. Consideration is given to M 87, the central galaxy of the Virgo cluster, which exhibits synchrotron emission from an optical jet as well as gaseous-filament structures emitting strongly in the 658.4-nm forbidden line of N II and a hot X-ray-emitting halo. The filaments are attributed to thermal instabilities in the bow shock produced by the motion of M 87 through the hot gas of the Virgo cluster. Also described are similar filamentary structures in NGC 1275, the central galaxy of the Perseus cluster.

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