Bibcode
Gonzalez-Serrano, J. I.; Perez-Fournon, I.; Colina, L.
Referencia bibliográfica
(COSPAR and IAU, Symposium on the Physics of Compact Objects, Sofia, Bulgaria, July 13-18, 1987) Advances in Space Research (ISSN 0273-1177), vol. 8, no. 2-3, 1988, p. 635-637.
Fecha de publicación:
1988
Número de citas
0
Número de citas referidas
0
Descripción
CCD photometry of the jet in the Thuan-Gunn r and g filters obtained
under good seeing conditions is presented. Elliptical models of the
underlying stellar emission were subtracted from the reduced and
calibrated images. The high signal to noise ratio and good spatial
resolution make it possible to determine very accurately the
morphological properties of the jet. These observations reveal a number
of new features: the outermost knot (H) can be resolved into several
components, and the spectral index of the knots between the r and g
bands is in general steeper than that in the radio and shows a trend to
become steeper with distance from the nucleus. The implications of these
results for current radiation jet models will be briefly discussed.