An optical (emission-line) jet in M87

Details An optical (emission-line) jet in M87 An optical (emission-line) jet in M87

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...240l...8j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 240, no. 2, Dec. 1990, p. L8-L10.

Astronomy and Astrophysics

Astrophysics

11

Astronomical Spectroscopy, Elliptical Galaxies, Emission Spectra, Radio Jets (Astronomy), Active Galactic Nuclei, Cooling Flows (Astrophysics), H Alpha Line, Radial Velocity

Scientific paper

Narrow-band H-alpha and spectroscopic observations of the central region on M87 (NGC 4486) have been obtained, and a highly elongated kinematically active 'jet-like' feature emanating radially from the nucleus is identified. This feature, inclined about 25 deg north of the well known optical synchrotron jet has a clear velocity gradient along its length with an amplitude of about 320 km/s. Curiously, it is also exactly aligned with an elongated forbidden O III (5007 A) emission line region located in the nucleus, unlike other Seyfert type galaxies where the forbidden O III feature appears to be always aligned with the radio emission.

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