J/PAZh/21/652 Optical variability in NGC 7469 (Lyuty+, 1995)
Rapid optical variability in NGC 7469: UBV photometry.
Lyuty V.M., Doroshenko V.T., Metlov V.G., Irsmambetova T.R.
<Pis'ma Astron. Zh. 21, 652 (1995)>
=1995PAZh...21..652L 1995PAZh...21..652L
=1995AstL...21..581L 1995AstL...21..581L
ADC_Keywords: Galaxies, Seyfert; Photometry, UBV
Abstract:
The results of three-color UBV observations of rapid variability in
the nucleus of the Seyfert galaxy NGC 7469 carried out in 1990-1994
are presented. The observations have been carried out during 15
different nights using the 60- and 125-cm telescopes with time
resolution of 6-8min (50 hours monitoring) with the aperture of 27.5".
The mean errors of one measurement are 1.8, 1.2 and 1.4% for
U, B and V.
The data set length during one night is from 2 up to 5h. The
different nights show the variations at different level: from weak,
when the standard deviation during the night exceeds the error of one
measurement only by 10-20%, up to strong ones, when the standard
deviation exceeds the error of the measurement by factor two.
Object:
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RA (2000) DE Designation
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23 03 15.6 +08 52 29 NGC 7469
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File Summary:
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File name Lrecl Records Explanations
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ReadMe 80 . This file
table.dat 34 395 UBV photometry of NGC 7469
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Byte-by-byte Description of files: table.dat
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Bytes Format Units Label Explanations
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1-12 F12.4 d HJD [2448157/2449607] Julian date
15-20 F6.3 mag Umag U magnitude
22-27 F6.3 mag Bmag B magnitude
29-34 F6.3 mag Vmag V magnitude
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(End) Veta Avedisova [INASAN] 01-Feb-1999