Old and new observations of the M87 jet

Details Old and new observations of the M87 jet Old and new observations of the M87 jet

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981esasp.162..145t&link_type=abstract

In ESA Opt. Jets in Galaxies p 145-151 (SEE N81-27993 18-88)

Astronomy and Astrophysics

Astronomy

4

Jets, Radio Galaxies, Spectral Emission, Astronomical Photography, Astronomical Spectroscopy, Emission Spectra, H Alpha Line, H Beta Line, Oxygen

Scientific paper

Data on the electromagnetic spectrum of the jet are reviewed, and the importance of the Space Telescope for its study indicated. It is difficult to determine the stellar magnitude of the jet by any method because it is observed on the bright background of the galaxy. It is not certain if the jet is a pure sequence of knots or if the knots are following a luminous stream. A change in the polarization and the intensity of the jet in 22 years is noted. High and low resolution spectra of the jet are presented. The emission lines of the nucleus present clear, complex profiles in the high resolution spectra, but no evidence of emission is present on the spectrum of the jet (knots A and B). The jet in the red region of the spectrum is very faint, but it is comparable to the nucleus in the UV.

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