1400 + 162 - an extended radio source identified with a BL Lacertae object in a group of galaxies

Details 1400 + 162 - an extended radio source identified with a BL Lacertae object in a group of galaxies 1400 + 162 - an extended radio source identified with a BL Lacertae object in a group of galaxies

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...215..408b&link_type=abstract

Astrophysical Journal, Part 1, vol. 215, July 15, 1977, p. 408, 409, 411-416.

Astronomy and Astrophysics

Astronomy

46

Galactic Clusters, Radio Sources (Astronomy), Red Shift, Spectral Energy Distribution, Astronomical Photometry, Emission Spectra, Infrared Radiation, Light Emission, Polarization Characteristics, Radio Emission

Scientific paper

This paper presents optical, infrared, and radio observations of the radio source 1400 + 162, which has been identified with a neutral stellar object. This source is classified as a BL Lacertae object based on the absence of broad emission features, its high degree of optical polarization, and its steep optical continuum. A weak narrow emission line is identified as the 3727-A feature of forbidden O II at z = 0.244, in agreement with the redshift of the nearest and brightest galaxy in a small adjacent group. The radio source 1400 + 162 differs from the sources associated with the majority of BL Lacertae objects in that, even at high frequencies, a significant fraction of its emission arises in extended components. The implications of the properties of 1400 + 162 for the interpretation of the physical conditions in BL Lacertae objects are briefly discussed.

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