FIRST J142643.2+315214 IS A NEW VARIABLE
Maciejewski, G., Niedzielski, A.
September 2, 2002
The radio source FIRST J142643.2+315214
(Faint Images of the Radio Sky at Twenty-cm) was found to coincide with a star TYC
2553 316 1 (GSC 02553-00316) located in the constellation Bootes. It is a 9.92 photographic
magnitude star according to GSC Catalogue and a 10.344
magnitude according to TYCHO. This object was found to be
optically variable during a semi-automatic CCD sky survey program in the Piwnice
Observatory. Observations were obtained during 29 nights
between April 21 and August 20, 2002. 142 individual observations obtained in
total were averaged within 29 one-hour intervals before analysis. Period search
was performed with ANOVA method. Following results were obtained:
|
HJD of minimum
Period [d]
Amplitude [mag]
|
= 2452468.69 +/- 0.16
= 20.83 +/- 0.04
= 0.35 +/- 0.05
|
Phased with period 20.d83 light curve of FIRST J142643.2+315214
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More observations will be performed in the future to determine the type of variability.
The results were published in IBVS 5308 (compressed PostScript). The data are available upon request.
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