AAS 201st Meeting, January, 2003
Session 11. Seyfert Galaxies and AGNs
Poster, Monday, January 6, 2003, 9:20am-6:30pm, Exhibit Hall AB

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[11.14U] A Multicolor Photometric Study of Three Type I Seyfert Galaxies

S.L. McGregor (St. Michaels College and SARA), K.S. Rumstay (Valdosta State University and SARA)

We present CCD observations of three Type I Seyfert galaxies (Akn 120, Mrk 509, and Akn 564) obtained with the SARA 0.9-m telescope during the period May 2001 to September 2002. Variations of a few tenths of a magnitude were observed for all three objects; each exhibits a correlation between brightness (V) and color (V-R). The galaxy Akn 564 exhibits an anomalous color pattern. It consistently appears brightest in the R band and slightly fainter in I and V; the flux in the B filter is significantly depressed. This may result from anomalous internal reddening; alternatively, published magnitudes for comparison stars in the Akn 564 field may be in error. Revised magnitudes for comparison stars in all three fields were derived from analysis of residuals in the photometric solutions of the images.

This work is supported by National Science Foundation grant AST-0097616 and by faculty development and research grants from Valdosta State University.

The author(s) of this abstract have provided an email address for comments about the abstract: krumstay@valdosta.edu

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Bulletin of the American Astronomical Society, 34, #4
© 2002. The American Astronomical Soceity.