Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...228..341f&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 228, no. 2, Feb. 1990, p. 341-343.
Astronomy and Astrophysics
Astronomy
1
Astronomical Photometry, Bl Lacertae Objects, Radio Sources (Astronomy), Spectrophotometry, Visual Photometry, Black Body Radiation, Infrared Photometry, Spectral Energy Distribution
Scientific paper
Optical spectrophotometry and infrared photometry of the counterpart of PKS 1301 - 19 proposed by Peterson et al. (1973), currently classified as a BL Lacertae object, are presented. The spectral flux distribution is close to that of a black body, differing markedly from that expected for a BL Lac object. New measurements of the position of the optical object, compared with the Molonglo position of the radio-source indicate that the Peterson et al. candidate is a very unlikey optical counterpart of the radio-source. The optical field of PKS 1301 - 19 is empty down to a V magnitude of about 23.
Falomo Renato
Treves Aldo
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