Observations of the low-luminosity broad-line radio galaxy 1717 + 49

Details Observations of the low-luminosity broad-line radio galaxy 1717 + 49 Observations of the low-luminosity broad-line radio galaxy 1717 + 49

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....91..751p&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 91, April 1986, p. 751-754.

Astronomy and Astrophysics

Astronomy

17

Astronomical Spectroscopy, Elliptical Galaxies, Radio Galaxies, Astronomical Maps, Centimeter Waves, Emission Spectra, Galactic Nuclei, Infrared Astronomy

Scientific paper

The elliptical galaxy 1717 + 49 (= A1718 + 49A = Arp 102B = VV 10= K508) contains an active nucleus characterized by a compact radio source, nonstellar visual-infrared emission, variable optical polarization, and strong broad emission lines. The luminosity of the active source is ˜l043 erg/s in the visual-infrared. The emission at 6 cm includes a structure whose position angle is nearly coincident with the mean position angle of the optical polarization. in terms of its visual-infrared and radio core characteristics, the object is similar to 3C 390.3, except that its luminosity is a factor of ˜20 lower. However, there is no evidence from our work or from previously published radio observations for the extended radio lobes which might be expected in an object like this. it is conceivable that the radio lobes are projected onto the core source. Scattering in the broad-line region or synchrotron radiation are both plausible explanations for the optical polarization.

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