Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...261..393b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 261, no. 2, p. 393-404.
Astronomy and Astrophysics
Astronomy
38
Active Galactic Nuclei, Elliptical Galaxies, Faint Objects, Peculiar Galaxies, Radio Jets (Astronomy), Astronomical Photometry, Astronomical Polarimetry, Particle Acceleration, Spectral Bands, Synchrotron Radiation, Virgo Galactic Cluster
Scientific paper
UV and optical images of the central region and jet of the nearby elliptical galaxy M87 have been obtained with about 0.1 arcsec resolution in several spectral bands with the Faint Object Camera (FOC) on the HST, including polarization images. Deconvolution enhances the contrast of the complex structure and filamentary patterns in the jet already evident in the aberrated images. Morphologically there is close similarity between the FOC images of the extended jet and the best 2-cm radio maps obtained at similar resolution, and the magnetic field vectors from the UV and radio polarimetric data also correspond well. We observe structure in the inner jet within a few tenths arcsec of the nucleus which also has been well studied at radio wavelengths. Our UV and optical photometry of regions along the jet shows little variation in spectral index from the value 1.0 between markedly different regions and no trend to a steepening spectrum with distance along the jet.
Albrecht Roland
Barbieri Carlo
Baxter D.
Blades Chris J.
Boksenberg Alec
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