Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21915404r&link_type=abstract
American Astronomical Society, AAS Meeting #219, #154.04
Astronomy and Astrophysics
Astronomy
Scientific paper
We present multi-wavelength continuum light curves spanning the period 2001 to 2011 for eleven active galaxies. Our sample includes nine Seyfert galaxies (in order of right ascension Mrk 335, Akn 120, Mrk 79, Mrk 704, NGC 4151, NGC 5548, Mrk 817, Mrk 509, and Akn 564) and two radio galaxies (3C-120 and 3C-390.3). These objects were observed in the B, V, R, and I Johnson/Cousins bands with the 0.9-m telescope operated by the Southeastern Association for Research in Astronomy (SARA) at the Kitt Peak National Observatory. Since May 2010 some have also been observed with the 0.6-m telescope at Cerro Tololo Inter-American Observatory.
These objects exhibit a wide range of variability. Akn 564 has remained constant in luminosity to within ±0.1 mag during the past decade; in contrast 3C-390.3 doubled in brightness between 2002 and 2005, then dimmed. All show a correlation between luminosity (V magnitude) and color (V-R), though with significant scatter.
This work was funded by the National Science Foundation Research Experiences
for Undergraduates (REU) program through grant NSF AST-1004872.
Roberts Caroline Anna
Rumstay Kenneth S.
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