Optical jets in elliptic galaxies, N galaxies, and BL Lacertae type objects

Details Optical jets in elliptic galaxies, N galaxies, and BL Lacertae type objects Optical jets in elliptic galaxies, N galaxies, and BL Lacertae type objects

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981esasp.162...29w&link_type=abstract

In ESA Opt. Jets in Galaxies p 29-35 (SEE N81-27993 18-88)

Astronomy and Astrophysics

Astronomy

6

Bl Lacertae Objects, Electronography, Elliptical Galaxies, Light Emission, Plasma Jets, Astronomical Photometry, Galactic Structure, Isophotes, Radio Galaxies

Scientific paper

Electronographic studies of optical jets were carried out using U color, V color and V' color (620 nm) photography with exposures of the order of 20 min. Isophotes were obtained by image processing using various computer programs. The condensation flash of the M87 galaxy jet was measured in U color. A filamentary radial and rectilinear jet was observed in the PKS 0521-36 object. A known perturbation NW of the 3C120 galaxy is found to originate west of the nucleus and shows continuous emission. This is the first observation of a jet changing direction. It is concluded that electronography is well adapted to jet studies, with 1 to 30 million pixels-having been obtained.

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