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\IBVShead{6075}{12 September 2013}

\IBVStitle{New times of minima for some eclipsing binary stars}

\IBVSauth{G\"{U}RSOYTRAK, H.; DEM\.{I}RCAN, Y.; G\"{O}KAY, G.; OKAN, A.; TERZ\.{I}O\u{G}LU, Z.; SARAL, G.; \c{S}EMUN\.{I}, M.; KILI\c{C} Y.; CER\.{I}T, S.; ALPSOY, M.; YOLKOLU, A.; \c{S}AH\.{I}N, \c{S}.; G\"{U}ROL, B.}

\IBVSinsto{Ankara University Observatory, Faculty of Science, Astronomy and Space Sciences Department 06100, Tando\u{g}an, Ankara, T\"{U}RK\.{I}YE; e-mail: hande.gursoytrak@science.ankara.edu.tr}

\IBVStyp{ Binaries: eclipsing }
\IBVSkey{CCD photometry}

\IBVSabs{We present several CCD minima observations of eclipsing binaries.}

\begintext

\IBVSEobs{16\arcs~Schmidt/Cassegrain telescope at Ankara University Observatory}

\IBVSEdet{Apogee ALTA U47+ back illuminated CCD camera, Peltier cooling, E2V CCD47-10 chip, 1024 $\times$ 1024 pixels.}

\IBVSEred{Reduction of the CCD frames was made with the IRAF\footnotemark\,
CCDRED and DAOPHOT packages.}

\footnotetext{IRAF is distributed by the National Optical Astronomical
Observatories, operated by the Association of the Universities for
Research in Astronomy, inc., under cooperative agreement with the
National Science Foundation}

\IBVSEmethod{The minima times were computed with several methods
in Minima25b (Nelson, 2006) (parabolic fit, tracing paper, bisectors
of chords, Kwee and van Woerden method (Kwee \& van Woerden, 1956),
Fourier fit and sliding integration technique). We calculated the mean minimum-time value from all the filters for a given 
star and tabulated this value in the Table.}

\IBVSEmins{LO And & 55825.5030 & 0.0001 & II & VRI & TO-YK-M\"{O} \\ 
 & 55880.2883 & 0.0002 & II & BVRI & AO-GG-MAk \\ 
V546 And & 55854.3219 & 0.0000 & I & BVRI & ZT \\ 
 & 55854.5136 & 0.0003 & II & BVRI & ZT \\ 
GK Boo & 56034.5133 & 0.0001 & I & BVRI & AO-Y\c{S}-DG \\ 
HH Boo & 56046.2957 & 0.0001 & II & BVI & YD \\ 
 & 56046.4537 & 0.0002 & I & BVI & YD \\ 
AK Cam & 55908.3271 & 0.0027 & II & VRI & AO-GG-SC \\ 
V474 Cam & 56034.3074 & 0.0000 & I & BVRI & AO-Y\c{S}-DG \\ 
EO CVn & 56021.3562 & 0.0004 & II & BVRI & ZT-AY \\ 
 & 56021.5340 & 0.0009 & I & BVRI & ZT-AY \\ 
EY CVn & 56010.5939 & 0.0017 & II & RI & SC-YK \\ 
V1046 Cas & 55836.4436 & 0.0001 & I & BVRI & YD-TO-AK \\ 
 & 55865.3677 & 0.0007 & II & BVRI & AY-MMK \\ 
 & 55866.3486 & 0.0008 & II & BVRI & AO-GG-Y\c{S} \\ 
EF Cep & 55821.5536 & 0.0003 & II & BVRI & CY-MA \\ 
 & 55829.4329 & 0.0004 & II & BVRI & YD-TO-AK \\ 
 & 56008.2389 & 0.0007 & II & BVRI & MBD-MNB \\ 
 & 56008.5420 & 0.0006 & I & BVRI & MBD-MNB \\ 
V796 Cep & 55874.5435 & 0.0002 & I & VRI & MBD-MSH-MA \\ 
 & 55897.5311 & 0.0006 & II & BVRI & GS-AY-M\"{O} \\ 
GSC 3996-0574 & 55873.4330 & 0.0008 & I & BVRI & GG \\ 
ASAS J013630+0150.3 & 55855.2944 & 0.0002 & I & BVRI & CY \\ 
 & 55855.4263 & 0.0002 & II & BVRI & CY \\ 
 & 55855.5618 & 0.0002 & I & BVRI & CY \\ 
TW CrB & 56055.4373 & 0.0005 & II & BVRI & AO-\c{S}\c{S}\c{S}-Y\c{S} \\ 
HI Dra & 55825.2723 & 0.0047 & I & BVRI & TO-YK-M\"{O} \\ 
TYC 3069-1654-1 & 56049.4065 & 0.0007 & II & BVRI & ZT-OY-CY \\ 
 & 56082.4960 & 0.0007 & II & BVRI & GG-MAk -EAy  \\ 
GV Leo & 56014.3221 & 0.0002 & II & BVRI & AO-GG \\ 
TYC 1426-857-1 & 55970.5213 & 0.0002 & II & BRI & GS \\ 
V2612 Oph & 56081.4971 & 0.0003 & II & BVRI & MNB-MBD \\ 
 & 56084.4990 & 0.0002 & II & BVRI & ZT-OY \\ 
V407 Peg & 55830.4822 & 0.0012 & I & BVRI & AY-CY \\ 
 & 55832.3924 & 0.0017 & I & BVRI & YK \\ 
 & 55833.3529 & 0.0006 & II & BVRI & MBD-AY \\ 
 & 55834.3034 & 0.0009 & I & BVRI & GS \\ 
GSC 2750-0854 & 55841.3555 & 0.0016 & II & BVRI & GS-SC \\ 
ASAS J225956+1418.2 & 55855.2643 & 0.0002 & II & BVRI & CY \\ 
V384 Ser & 56080.3651 & 0.0001 & I & BVRI & MSH \\ 
 & 56080.4991 & 0.0006 & II & BVRI & MSH \\ 
V1367 Tau & 55873.6325 & 0.0005 & II & VRI & GG \\ 
 & 55901.4483 & 0.0008 & II & BVRI & AO-Y\c{S}-GG \\ 
 & 55901.6194 & 0.0007 & I & VRI & AO-Y\c{S}-GG \\ 
V354 UMa & 56016.3144 & 0.0012 & II & BVRI & CY-KG-E\c{C} \\ 
 & 56016.4583 & 0.0008 & I & BVRI & CY-KG-E\c{C} \\ 
PS Vir & 56011.3540 & 0.0002 & II & BVRI & YD \\ 
 & 56011.5006 & 0.0003 & I & BVRI & YD \\ 
ASAS J205847+2731.9 & 55829.3192 & 0.0002 & I & BVRI & YD-TO-AK \\ 
}
\IBVSEremexp{Observers: AK: Altu\u{g} KARADA\u{G}, AO: Abdullah OKAN, AY: Arzu YOLKOLU, CY: Ceren YILDIRIM, DG: Damla G\"{U}M\"{U}\c{S}, EAy : Ezgi AYDO\u{G}DU, E\c{C}: Emine \c{C}\"{O}LKU\c{S}U, GG: G\"{o}khan G\"{O}KAY, GS: G\"{o}zde SARAL, KG: K\"{u}bra G\"{U}LL\"{U}, MA: Mehmet ALPSOY, MAk : Mihriban AKI, MBD: Mustafa Burak DO\u{G}RUEL, MMK: Metehan Metin KEKL\.{I}K, MNB: Mehmet Naim BA\u{G}IRAN, M\"{O}: Maksude \"{O}ZT\"{U}RK, MSH: Muhammed \c{S}EMUN\.{I}, OY: Onur Y\"{O}R\"{U}KO\u{G}LU, SC: Sonay CER\.{I}T, \c{S}\c{S}\c{S}: \c{S}akir \c{S}enol \c{S}AH\.{I}N, TO: Tahsin OZUN, YD: Yahya DEM\.{I}RCAN, YK: Y\"{u}cel KILI\c{C}, Y\c{S}: Yunus \c{S}ENDA\u{G}, ZT: Zahide TERZ\.{I}O\u{G}LU}

\IBVSEack{We are grateful to the Ankara University Observatory for the allocated telescope time
and for the use of other facilities.}


\references

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

Nelson, B., 2006, Minima v2.3, {\tt http://www.members.shaw.ca/bob.nelson/software1.htm }

\endreferences

\IBVSedata{6075-t2.txt}
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