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\input ibvs2.sty
\input ibvse.sty

\begin{document}

\IBVShead{5462}{13 October 2003}

\IBVStitletl{Photoelectric Minimum Times of Some Eclipsing}{ Binary Stars}

\IBVSauth{AK, H.; F{\.I}L{\.I}Z, N.}

\IBVSinsto{Ankara University Observatory, Faculty of Science, 06100, Tando\u{g}an, Ankara, Turkey \\
\indent e-mails: ak@astro1.science.ankara.edu.tr, nur.filiz@mynet.com}

\SIMBADobj{V436 Per}
\SIMBADobj{TT Aur}
\SIMBADobj{V459 Aur}
\SIMBADobj{CI CVn}
\SIMBADobj{YY CrB}
\SIMBADobj{V994 Her}
\SIMBADobj{V478 Cyg}
\SIMBADobj{V401 Lac}
\SIMBADobj{CO Lac}
\SIMBADobj{V821 Cas}


\IBVStyp{  Binaries: eclipsing  }
\IBVSkey{Minimum Times}

\IBVSabs{We present 15 minimum times of 8 eclipsing binaries observed in the}
\IBVSabs{years from 2001 to 2003 and in 1998 only for V436 Per.}

\begintext


\IBVSEobs{40-cm Cassegrain telescope of the T\"{U}B\.{I}TAK\IBVSfm\ National
Observatory and 30-cm Maksutov telescope of the Ankara University
Observatory.}

\IBVSEdet{OPTEC SSP-5A photometer containing a side-on R1414 Hamamatsu
photomultiplier.}


\IBVSEred{Reduction of the observations were made in the usual way (Hardie,
1962).}

\IBVSfoot{T\"{U}B{\.I}TAK : The Scientific and Technical Research Council
of Turkey}

\IBVSEmethod{Kwee \& van Woerden (1956).}


{\small
\IBVSEstars{
V436 Per & EA/D     & 01 51 59 & +55 08 50 & HD 12303       & 43562.859    & 25.935872 & 2 \\
TT Aur   & EB/DM    & 05 09 42 & +39 35 11 & HD 32989       & 48599.2964   & 1.332735  & 3 \\
V459 Aur & EB       & 06 35 38 & +32 34 36 & HIP 31104      & 48500.827    & 1.062637  & 1 \\
CI CVn   & EB       & 13 13 33 & +47 47 53 & SAO 44619      & 48500.518    & 0.815877  & 1 \\
YY CrB   & EW       & 15 50 32 & +37 50 08 & HIP 77624      & 51674.3541   & 0.37656417& 4 \\
V994 Her & EA       & 18 27 46 & +24 41 51 & HIP 91568      & 48501.1239   & 2.08309   & 1 \\
V478 Cyg & EA/DM    & 20 19 39 & +38 20 09 & HD 228807      & 44777.4779   & 2.880795  & 5 \\
V401 Lac & EA       & 22 08 21 & +49 13 16 & HIP 109818     & 48501.790    & 1.9501    & 1 \\
CO Lac   & EA       & 22 46 30 & +56 49 31 & GSC 03992 02252& 27534.0728   & 1.5422075 & 6 \\
V821 Cas & EA       & 23 58 49 & +53 40 20 & HD 224814      & 48500.4459   & 1.76975   & 1 \\
}
}


\IBVSEsource{
1.: Perryman et al. (1997);
2.: Harmanec et al. (1997);
3.: Simon (1999);\\
4.: Demircan et al. (2003);
5.: Sezer et al. (1983);
6.: Semeniuk (1967).
}


\IBVSEmin{
V436 Per & 51058.3491  & 0.0001 &  I  & $UBV$  &   0.0231  &   HA    \\
TT Aur   & 52212.3446  & 0.0001 &  I  & $UBV$  &   0.0036  & NF, HA  \\
         & 52541.5319  & 0.0001 &  I  & $UBV$  &   0.0054  & HA, EA  \\
         & 52569.5185  & 0.0001 &  I  & $UBV$  &   0.0046  & AB, GS  \\
V459 Aur & 52583.4813  & 0.0003 &  I  & $UBV$  &   0.0029  & NF, AB  \\
CI CVn   & 52373.4751  & 0.0001 &  I  & $UBV$  &  $-$0.0111  & HA, NF  \\
         & 52737.3553  & 0.0002 &  I  & $UBV$  &  $-$0.0120  & HA, NF  \\
         & 52765.5042  & 0.0002 &  II & $UBV$  &  $-$0.0108  & NF, AB  \\
YY CrB   & 52786.3493  & 0.0002 &  I  & $UBV$  &   0.0017  & HA, SS  \\
         & 52793.5031  & 0.0002 &  I  & $UBV$  &   0.0008  & NF, SS  \\
         & 52814.3996  & 0.0003 &  II & $UBV$  &  $-$0.0020  & NF, EA  \\
V994 Her & 52451.4363  & 0.0004 &  I  & $UBV$  &  $-$0.0572  & NF, HA  \\
V478 Cyg & 52145.4006  & 0.0008 &  II & $UBV$  &   0.2895  & HA, NF  \\
         & 52155.4588  & 0.0008 &  I  & $UBV$  &   0.2649  & HA, NF  \\
V401 Lac & 52891.5075  & 0.0003 &  I  & $UBV$  &   0.0424  & EA, NF  \\
         & 52898.4022  & 0.0007 &  II & $UBV$  &   0.1117  & EA, HA  \\
CO Lac   & 51107.4978  & 0.0005 &  II & $UBV$  &   0.0123  &   HA    \\
         & 51108.2418  & 0.0004 &  I  & $UBV$  &  $-$0.0149  &   HA    \\
V821 Cas & 52597.4220  & 0.0001 &  I  & $UBV$  &   0.0048  & NF, HA  \\
}


\IBVSEremexp{Observers: HA: Hasan AK, NF: Nurten F{\.I}L{\.I}Z, EA: Erkan ATAMAN, \\
AB: Ak{\i}n BALKI\c{S}, GS: Gonca SALMAN, SS: Semih SEZG{\.I}N }


\IBVSEack{The authors would like to thank the {\it T\"{U}B{\.I}TAK National
Observatory (TUG)} for the observing time. And also special thanks to observers for their help.}


\references


Demircan, O., Erdem, A., \"{O}zdemir, S., \c{C}i\c{c}ek, C., Bulut, \.{I}., Soydugan, F., Soydugan, E., Bak{\i}\c{s}, V., Kaba\c{s}, A., Bulut, A., 
T\"{u}ys\"{u}z, M., Zejda, M., Budding, E., 2003, {\it IBVS}, No. 5364

Hardie, R., 1962, {\it Astr.\ Tech.: Stars and Stellar Systems}, Vol.\ II, Univ.\ of Chicago Press, Chicago

Harmanec, P., Hadrava, P., Yang, S., Holmgren, D., North, P., Kubsky, P., Kubat, J., Paretti, E.,  1997, {\it A\&A}, {\bf 319}, 867

Kwee, K. K. and van Woerden, H., 1956, {\it Bull. Astr. Neth.}, {\bf 12} ,327

Perryman, M. A. C, H\o g, E., Kovalevsky J., Lindegren L., Turon C. 1997,
ESA SP-1200, The Hipparcos and Tycho Catalogues

Semeniuk, I., 1967, {\it Acta Astron.}, {\it 17}, 223

Sezer, C., G\"{u}d\"{u}r, N., G\"{u}lmen, \"{O}., \c{S}engonca, H., 1983, {\it A\&AS}, {\bf 53}, 363

Simon, V., 1999, {\it A\&AS}, {\bf 134}, 1


\endreferences

\end{document}

