A Sub-Arcsecond, Optical-Continuum Jet in PICTOR A

Details A Sub-Arcsecond, Optical-Continuum Jet in PICTOR A A Sub-Arcsecond, Optical-Continuum Jet in PICTOR A

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aas...180.0202s&link_type=abstract

American Astronomical Society, 180th AAS Meeting, #02.02; Bulletin of the American Astronomical Society, Vol. 24, p.727

Astronomy and Astrophysics

Astronomy

3

Scientific paper

Pictor A is the closest FRII, Broad-Line radio galaxy (z=0.035). Images taken with the WFPC on the HST in the redshifted bands of [OIII], 5007 + 4959 and the redshifted continuum region near 5200 Angstroms, show the narrow-emission-line region in [OIII] is roughly symmetrical with respect to the nucleus while the line-free continuum is elongated in a jet towards the W side of the nucleus. The jet is approximately 0.05 x 0.22 arc seconds (22 x 110 parsec h(-1) ) in size and points towards the stronger, W radio lobe of the galaxy. This feature is discernible even without deconvolution of the HST images. As yet, there are no high-resolution radio maps of the central component of this Southern Hemisphere object, thus it cannot be identified as optical-synchrotron emission, but its orientation with respect to the large-scale radio structure strongly suggests this possibility.

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