The optical variability and spectrum of PKS 2155-304

Details The optical variability and spectrum of PKS 2155-304 The optical variability and spectrum of PKS 2155-304

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...272...26m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 272, Sept. 1, 1983, p. 26-28. Research supported by Georgia State Universit

Astronomy and Astrophysics

Astrophysics

29

Astronomical Photometry, Astronomical Spectroscopy, Bl Lacertae Objects, Optical Properties, Long Term Effects, Oxygen Spectra, Quasars, Variability

Scientific paper

Photometry of the BL Lacertae object PKS 2155-304 has demonstrated that small-amplitude color variations accompany long-term trends in the optical variations of this object. These variations are similar to those found for the optically violent variable quasar 3C 446. These variations have been compared and found to agree well with a recent model suggested by Marscher. Spectroscopy of PKS 2155-304 has failed to confirm the identification of the forbidden O III features and the redshift reported by Charles, Thorstensen, and Bowyer.

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