Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26as...93..391k&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 93, no. 3, June 1992, p. 391-397.
Astronomy and Astrophysics
Astronomy
6
Bl Lacertae Objects, Infrared Astronomy, Light Curve, Near Infrared Radiation, Quasars, Stellar Spectrophotometry, Visual Observation, Stellar Luminosity, Variable Stars
Scientific paper
Near infrared monitoring taken with the 1.5 m Carlos Sanchez Telescope in Tenerife of the decline of 3C279 during its 1988 outburst is presented. These data are combined with visible monitoring and data from the literature to examine the behavior of the light curve from B to K. A maximum in the infrared light curve was observed in June 1989 which was comparable at maximum to that seen in 1988. The 1988-89 outburst thus resembles closely that of 1936. Only weak evidence is seen of a correlation between (B - V) and m(V). Stronger correlations are observed between the measured infrared color indices and between the infrared brightness and color. The infrared continuum reddens as 3C279 fades, in agreement with behavior of the optical continuum of other Optically Violent Variables.
de Diego Jose A.
Kidger Marc
Lario Pedro Garcia
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