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\input ibvso.sty
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\begin{document}

\IBVShead{5799}{11 October 2007}

\IBVStitle{Observations of variables}

\IBVSabs{New observations of, and new information on known variable stars.}

\begintext

The last but one issue of the volume publishes new observations, and
results on known variable stars. Figures and data files are available
electronically.

Previous reports can be found in \IBVSlink{http://www.konkoly.hu/cgi-bin/IBVS?5699} IBVS No. 5699.

\bigskip
\bigskip

The Editors

\bigskip
\bigskip


\IBVSOobs{7 November 2006}
{
Bl\"attler, E. - BBSAG, Switzerland, blaettler-wald@bluewin.ch \\ %email
Diethelm, R. - BBSAG, Switzerland, rdiethelm@gmx.ch \\ %email
}{1}

Bl\"attler has performed CCD observations in the V and R bands on the following 
stars with a SBIG ST-7 camera attached to his 0.15-m Starfire refractor in Wald,
Switzerland, during 8 nights between JD 2453858 and JD 2453910.

\IBVSOobj{
GSC 1518-913 = NSVS 10695152 = ASAS 162446+2139.1}
{
A total of 166 measurements in both colours were obtained, using GSC 1518-635 
(10.50 mag) as comparison and GSC 1518-649 (10.75 mag) as check star. A linear 
regression of the 8 times of minimum with the ROTSE1 data yields the following 
results: Type: EW; JD (min I, hel) = 2453900.5264 + 0.321156 $\times$ E; 
\\$\Delta R$(prim.) = 0.18 mag; $\Delta R$(sec) = 0.15 mag. The $V-R$ colour curve shows 
no variation exceeding the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f1.ps}
\IBVSfigKey{5799-f1.ps}{GSC 1518-649}{finding chart}
phased light curve, \IBVSefigure{5799-f2.ps}
\IBVSfigKey{5799-f2.ps}{GSC 1518-649}{light curve}
phased colour curve, \IBVSefigure{5799-f3.ps}
\IBVSfigKey{5799-f3.ps}{GSC 1518-649}{colour curve}
data file \IBVSedata{5799-t1.txt}
\IBVSdataKey{5799-t1.txt}{GSC 1518-649}{photometry}
}{1}

\IBVSOobj{
GSC 2587-1888 = NSVS 7913634}
{
A total of 169 measurements in both colours were obtained, using GSC 2587-918 
(11.02 mag) as comparison and GSC 2587-610 (11.03 mag) as check star. A linear 
regression of the 8 times of minimum with the ROTSE1 data yields the following 
results: Type: EW; JD(min I, hel) = 2453877.4694 + 0.310726 $\times$ E; \\
$\Delta R$(prim.) = 0.17 mag; $\Delta R$(sec) = 0.17 mag. The $V-R$ colour curve shows 
no variation exceeding the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f4.ps}
\IBVSfigKey{5799-f4.ps}{GSC 2587-1888}{finding chart}
phased light curve, \IBVSefigure{5799-f5.ps}
\IBVSfigKey{5799-f5.ps}{GSC 2587-1888}{light curve}
phased colour curve, \IBVSefigure{5799-f6.ps}
\IBVSfigKey{5799-f6.ps}{GSC 2587-1888}{colour curve}
data file \IBVSedata{5799-t2.txt}
\IBVSdataKey{5799-t2.txt}{GSC 2587-1888}{photometry}
}{2}

\IBVSOobj{
GSC 2587-289 = NSVS 7912995}
{
A total of 214 measurements in both colours were obtained, using SAO 65316 
(10.39~mag) as comparison and SAO 65330 (10.06~mag) as check star. A linear 
regression of the 10 times of minimum with the ROTSE1 data yields the following 
results: Type: EW; JD(min I, hel) = 2453898.3997 + 0.337043 $\times$ E; \\
$\Delta R$(prim.) = 0.41 mag; $\Delta R$(sec) = 0.36 mag. The $V-R$ colour curve shows 
no variation exceeding the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f7.ps}
\IBVSfigKey{5799-f7.ps}{GSC 2587-289}{finding chart}
phased light curve, \IBVSefigure{5799-f8.ps}
\IBVSfigKey{5799-f8.ps}{GSC 2587-289}{light curve}
phased colour curve, \IBVSefigure{5799-f9.ps}
\IBVSfigKey{5799-f9.ps}{GSC 2587-289}{colour curve}
data file \IBVSedata{5799-t3.txt}
\IBVSdataKey{5799-t3.txt}{GSC 2587-289}{photometry}
}{3}

\IBVSOobj{
GSC 963-246 = NSVS 10670664 = NSVS 10732160 = ASAS 162745+1103.6}
{
A total of 195 measurements in both colours were obtained, using GSC 963-370 
(10.41 mag) as comparison and GSC 963-108 (11.32 mag) as check star. A linear 
regression of the 9 times of minimum with the ROTSE1 data yields the following 
results: Type: EW; JD(min I, hel) = 2453906.4880 + 0.385493 $\times$ E; \\
$\Delta R$(prim.) = 0.33 mag; $\Delta R$(sec) = 0.30 mag. The $V-R$ colour curve shows 
no variation exceeding the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f10.ps}
\IBVSfigKey{5799-f10.ps}{GSC 963-246}{finding chart}
phased light curve, \IBVSefigure{5799-f11.ps}
\IBVSfigKey{5799-f11.ps}{GSC 963-246}{light curve}
phased colour curve, \IBVSefigure{5799-f12.ps}
\IBVSfigKey{5799-f12.ps}{GSC 963-246}{colour curve}
data file \IBVSedata{5799-t4.txt}
\IBVSdataKey{5799-t4.txt}{GSC 963-246}{photometry}
}{4}

\IBVSOobs{8 November 2006}
{
Zboril, M. - Astronomical Institute, Tatransk\'{a} Lomnica, 059 60, Slovakia, zboril@astro.sk \\ %email
}{2}

\GCVSobj{FY Boo}
\SIMBADobj{FY Boo}

\IBVSOobj{
FY Boo}
{
FY Boo was observed in V and R colors with the 0.5m telescope / SBIG ST10 CCD 
camera of the Star\'{a} Lesn\'{a} observatory, on May 3rd 2006. The comparison 
and check stars were GSC 1999-854 and GSC 1999-388, respectively.
}
{
light curve, \IBVSefigure{5799-f13.ps}
\IBVSfigKey{5799-f13.ps}{FY Boo}{light curve}
light curve, \IBVSefigure{5799-f14.ps}
\IBVSfigKey{5799-f14.ps}{FY Boo}{light curve}
data file \IBVSedata{5799-t5.txt}
\IBVSdataKey{5799-t5.txt}{FY Boo}{photometry}
data file \IBVSedata{5799-t6.txt}
\IBVSdataKey{5799-t6.txt}{V523 Cas}{photometry}
}{5}

\IBVSecomment{GCVS:}
\GCVSobj{V523 Cas} 
\IBVSecomment{SIMBAD:}
\SIMBADobj{V523 Cas}

\IBVSOobj{
V523 Cas}
{
V523 Cas was observed in V and R colors with the 0.5m telescope / SBIG ST10 CCD 
camera of the Star\'{a} Lesn\'{a} observatory, on September 5th 2006. The 
comparison and check stars were GSC 3257-1068 and USNO-A2.0 1350-00691230, 
respectively.}
{
phased light curve, \IBVSefigure{5799-f15.ps}
\IBVSfigKey{5799-f15.ps}{V523 Cas}{light curve}
phased light curve, \IBVSefigure{5799-f16.ps}
\IBVSfigKey{5799-f16.ps}{V523 Cas}{light curve}
data file \IBVSedata{5799-t7.txt}
\IBVSdataKey{5799-t7.txt}{V523 Cas}{photometry}
data file \IBVSedata{5799-t8.txt}
\IBVSdataKey{5799-t8.txt}{V523 Cas}{photometry}
}{6}

\vfill\eject

\IBVSOobs{31 January 2007}
{
Bedient, J. - Honolulu, Hawaii, jbedient@gmail.com \\ %email
}{3}

\IBVSecomment{SIMBAD:}
\SIMBADobj{V2362 Cyg}

\IBVSOobj{
V2362 Cyg}
{
The field of V2362 Cyg was checked on 237 RH series plates in the 
Harvard College Observatory Plate Archive. The star was not detected on these 
plates, dating from 20 April 1928 to 5 August 1962. The mean limiting magnitude 
of these blue plates was 13.22. The comparison sequence used was that published 
by Frigo et al. (2006).}
{
finding chart, \IBVSefigure{5799-f17.ps}
\IBVSfigKey{5799-f17.ps}{V2362 Cyg}{finding chart}
light curve, \IBVSefigure{5799-f18.ps}
\IBVSfigKey{5799-f18.ps}{V2362 Cyg}{light curve}
data file \IBVSedata{5799-t9.txt}
\IBVSdataKey{5799-t9.txt}{V2362 Cyg}{photometry}
}{7}


\IBVSOobs{9 March 2007}
{
Bl\"attler, E. - BBSAG, Switzerland, blaettler-wald@bluewin.ch \\ %email
Diethelm, R. - BBSAG, Switzerland, rdiethelm@gmx.ch \\ %email
}{4}

Bl\"attler has performed CCD observations in the V and R bands on four 
EW stars with a SBIG ST-7 camera attached to his 0.15-m Starfire refractor 
in Wald, Switzerland. The observations were made during 6 nights between 
JD 2454066 and JD 2454114.


\IBVSOobj{GSC 107-596 Ori = NSVS 12310076 = ASAS 050837+051218}
{
A total of 221 measurements in both colours were obtained, using 
GSC 107-1120 (10.85  mag) as comparison and GSC107-165 (10.69 mag) as 
check star. A linear regression of the 16 times of minima with the ROTSE1 
data yields the following results: Type: EW; 
JD(min I, hel) = 2454066.4302 + 0.2663496 $\times$ E; \\
$\Delta R$(prim.) = 0.60 mag; 
$\Delta R$(sec) = 0.54 mag. The $V-R$ colour curve shows no variation exceeding 
the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f19.ps}
\IBVSfigKey{5799-f19.ps}{GSC 107-596}{finding chart}
light curve, \IBVSefigure{5799-f20.ps}
\IBVSfigKey{5799-f20.ps}{GSC 107-596}{light curve}
colour curve, \IBVSefigure{5799-f21.ps}
\IBVSfigKey{5799-f21.ps}{GSC 107-596}{colour curve}
data file \IBVSedata{5799-t10.txt}
\IBVSdataKey{5799-t10.txt}{GSC 107-596}{photometry}
}{8}

\IBVSOobj{GSC 1283-53 Ori = NSVS 9553026 = ASAS 051305+155812}
{
A total of 236 measurements in both colours were obtained, using SAO 94388 
(9.18  mag) as comparison and GSC 1283-239 (11.01 mag) as check star. 
A linear regression of the 12 times of minima with the ROTSE1 data yields 
the following results: Type: EW; 
JD(min I, hel) = 2454066.5778 + 0.383004 $\times$ E; \\
$\Delta R$(prim.) = 0.42 mag; 
$\Delta R$(sec) = 0.39 mag. The $V-R$ colour curve shows no variation exceeding 
the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f22.ps}
\IBVSfigKey{5799-f22.ps}{GSC 1283-53}{finding chart}
phased light curve, \IBVSefigure{5799-f23.ps}
\IBVSfigKey{5799-f23.ps}{GSC 1283-53}{light curve}
phased colour curve, \IBVSefigure{5799-f24.ps}
\IBVSfigKey{5799-f24.ps}{GSC 1283-53}{colour curve}
data file \IBVSedata{5799-t11.txt}
\IBVSdataKey{5799-t11.txt}{GSC 1283-53}{photometry}
}{9}

\vfill\eject

\IBVSOobj{GSC 702-1892 Ori = Brh V43 = NSVS 9512770 = ASAS 051245+101512}
{
A total of 221 measurements in both colours were obtained, using 
GSC 702-2174 (11.03 mag) as comparison and GSC 702-2730 (12.42 mag) as check 
star. A linear regression of the 16 times of minima with the ROTSE1 data 
and the minimum reported by Nelson (2004) yields the following results: 
Type: EW; \\
JD(min I, hel) = 2454083.5159 + 0.276945 $\times$ E; 
$\Delta R$(prim.) = 0.67 mag; \\
$\Delta R$(sec) = 0.64 mag. The $V-R$ colour curve 
shows no variation exceeding the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f25.ps}
\IBVSfigKey{5799-f25.ps}{GSC 702-1892}{finding chart}
phased light curve, \IBVSefigure{5799-f26.ps}
\IBVSfigKey{5799-f26.ps}{GSC 702-1892}{light curve}
phased colour curve, \IBVSefigure{5799-f27.ps}
\IBVSfigKey{5799-f27.ps}{GSC 702-1892}{colour curve}
data file \IBVSedata{5799-t12.txt}
\IBVSdataKey{5799-t12.txt}{GSC 702-1892}{photometry}
}{10}

\IBVSOobj{GSC 706-845 Ori = NSVS 9508259 = ASAS 050830+113148}
{
A total of 227 measurements in both colours were obtained, using GSC 706-30 
(10.77 mag) as comparison and GSC 706-238 (11.13 mag) as check star. 
A linear regression of the 12 times of minimum with the ROTSE1 data yields 
the following results: Type: EW; 
JD(min I, hel) = 2454090.4610 + 0.342271 $\times$ E; \\
$\Delta R$(prim.) = 0.27 mag; 
$\Delta R$(sec) = 0.24 mag. The $V-R$ colour curve shows no variation exceeding 
the accuracy of the photometry.
}
{
finding chart, \IBVSefigure{5799-f28.ps}
\IBVSfigKey{5799-f28.ps}{GSC 706-845}{finding chart}
phased light curve, \IBVSefigure{5799-f29.ps}
\IBVSfigKey{5799-f29.ps}{GSC 706-845}{light curve}
phased colour curve, \IBVSefigure{5799-f30.ps}
\IBVSfigKey{5799-f30.ps}{GSC 706-845}{colour curve}
data file \IBVSedata{5799-t13.txt}
\IBVSdataKey{5799-t13.txt}{GSC 706-845}{photometry}
}{11}

\IBVSOobs{13 July 2007}
{
Arranz Heras, T., Observatorio ``Las Pegueras'', Navas de Oro, Segovia, Spain \\
S\'anchez-Bajo, F., Departamento de F\'{\i}sica Aplicada, Escuela de Ingenier\'{\i}as Industriales, Universidad de Extremadura, Avda de Elvas s/n, 06071 Badajoz, Spain, fsanbajo@unex.es \\ %email
}{5}

\IBVSOobj{TX Cnc}
{
785 measurements in the Johnson V filter have been obtained by Arranz Heras 
using a 0.35 m Schmidt-Cassegrain telescope and a Starlight MX916 CCD
camera, during 8 nights between JD 2454144 and JD 2454163. Comparison star
was \hbox{GSC~1395-1090} (V = 9.78). A parabolic fit using 5 new minima timings
along with other 70 obtained from the bibliography provide the following
ephemeris: \\
HJD(Min I) = 2434426.4859(28) + 0.38288048(24) E + 3.20(39) $\times 10^{-11}$ E$^2$
}
{
phased light curve, \IBVSefigure{5799-f31.ps}
\IBVSfigKey{5799-f31.ps}{TX Cnc}{light curve}
O-C diagram, \IBVSefigure{5799-f32.ps}
\IBVSfigKey{5799-f32.ps}{TX Cnc}{O-C diagram}
photometry data file \IBVSedata{5799-t14.txt}
\IBVSdataKey{5799-t14.txt}{TX Cnc}{photometry}
minima data file \IBVSedata{5799-t15.txt}
\IBVSdataKey{5799-t15.txt}{TX Cnc}{Minima times}
O-C data file \IBVSedata{5799-t16.txt}
\IBVSdataKey{5799-t16.txt}{TX Cnc}{Data for the O-C diagram}
}{12}

%Corrected: 3.20(39) --> 3.20(39) \times 10^{-11}
%Date Thu Sep  6 12:13:46 MEST 2007

\references

Frigo, A. et al., 2006, IBVS, No. 5711

Nelson, R.H., 2004, IBVS, No. 5493

\end{document}
