\documentstyle[twoside, epsf]{article}

\input ibvs2.sty

\begin{document}

\IBVShead{5586}{3 January 2005}

\IBVStitle{New Elements for 80 Eclipsing Binaries V.}

\IBVSauth{Otero, Sebasti\'an A.$^{1,2}$; Wils, Patrick$^3$; Dubovsky, Pavol A.$^4$}

\IBVSinst{Grupo Wezen 1 88, Buenos Aires, Argentina; e-mail: varsao@fullzero.com.ar}
\IBVSinst{Centro de Estudios Astron\'omicos (CEA), Mar del Plata, Argentina}
\IBVSinst{Vereniging Voor Sterrenkunde, Belgium; e-mail: patrick.wils@cronos.be}
\IBVSinst{Slovak Association of Amateur Astronomers, Podbiel, Slovakia; e-mail: vkco@orava.sk}

\IBVStyp{ EA EB EW }

\IBVSkey{variable stars, eclipsing binary, periods}

\IBVSabs{This research presents new elements for 80 eclipsing binaries}
\IBVSabs{found with the help of the ASAS-3, Hipparcos and NSVS databases. }


\begintext

The ASAS-3 (Pojmanski, 2002), NSVS (Wozniak et al., 2004) and Hipparcos (Perryman et al., 1997) databases have been used to find new elements for a fifth set of 80 eclipsing binaries. 
NSVS, ASAS-3 and Hipparcos data have been combined to improve the period determinations. Unfiltered NSVS ROTSE1 magnitudes were shifted to match the V magnitude of the stars. In all cases the amplitude of the eclipses were the same for all datasets so the combination was successful. When neither ASAS nor Hipparcos observations exist, the original ROTSE1 magnitudes have been given.
Saturated data in ASAS-3 and flagged observations in the Hipparcos Epoch Photometry and the NSVS dataset were also discarded.
Hipparcos observations have been transformed to V using a table by the author published electronically in IBVS No. 5482 (Otero, 2003).
The candidate stars were selected from the Hipparcos Variability Annex and the NSV catalogue (Kukarkin and Kholopov, 1982) and its supplement (NSVS) (Kazarovets et al., 1998). Stars classified as eclipsing binaries and those showing mean Hp magnitudes close to the maximum Hp values in the Hipparcos Variability Annex were identified and their ASAS-3 and/or NSVS data subsequently obtained. Stars classified as possible eclipsing systems (of all types) and those with a spectral type between O and G that had no given classification within the NSV catalogues were also checked.
The method of bisected chords was used to determine times of minima. The accuracy depends on the quantity and quality of the observations. Elements were found with AVE (Barber\'a, 1999) and a Microsoft Excel period search utility.
Table 1 shows the list of variables. The first column gives the variable star designation according to the GCVS. The following columns give another identifier; the brightness range of the variable (V= ASAS-3 or Hipparcos V magnitudes; *= ROTSE1 magnitudes), with the magnitude of secondary eclipse between brackets; the epoch of minimum light derived from the complete dataset; the period; the variability class and the spectral type with a note to the spectral type source.


\begin{table}
\centerline{Table 1. New elements for 80 eclipsing binary stars.}
\small
\begin{center}
\begin{tabular}{ccc@{$-$}ccccc}
\hline
\multicolumn{2}{c}{Star Name} & \multicolumn{2}{c}{Magnitude range} & Epoch & Period & Type & Spectral type\\
 Variable &   Other ID & \multicolumn{2}{c}{} &  (HJD2440000+) & (days) &&\\
\hline
BX Psc   * &	HIP 001435    &	7.53  &	7.60 (7.55)   & 8984.837   &	3.86051    &	EB:   &    A5 (24)\\
CX CVn   * &	HIP 068384    & 9.34  &	9.60 (9.53:)  & 8455.639   &	6.563204   &	EA&\\
DD Oct   * &	HIP 098832    & 9.68  &	10.10 (9.86)  & 7999.344   &	2.83071    &	EA    &    F2V (1)\\
DT Cam   * &	HIP 024390    & 8.13  &	 8.80:(<8.6)  & 8501.355   &	14.1325     &	EA    &    A2 (24)\\
LX Mus   * &	HIP 066683    & 8.76  &	 9.09 (8.99)  & 8770.665   &	11.75056    &	EA    &    F5V (1)\\
NSV 00049  &	GSC 3258 0448 &	12.00 &	12.44(12.41)* &	11324.849  &	0.332004   &	EW&\\
NSV 00381  &	GSC 4021 1459 &	12.57 &	13.0 (12.75)* &	11415.814  &	0.67708    &	EB&\\
NSV 00583* &	GSC 2298 0114 &	14.1  &	<15.2 (14.5)* &	11338.067  &	2.0582     &	EA&\\
NSV 00587  &	GSC 4314 1709 &	11.80 &	12.55:(11.9)* &	11343.082  &	4.922      &	EA&\\
NSV 01009* &	GSC 4048 0934 &	10.26 &	10.56(10.52)* &	11601.625  &	4.1278     &	EA    & O7(V) (18)\\
NSV 01085  &	GSC 2860 1725 &	12.2  &	 13.4  (12.4)*&	11342.857  &	7.2778     &	EA&\\
NSV 01180  &	GSC 2354 1811 &	11.89 &	12.17(12.03)* &	11479.080  &   77.53       &	EA&\\
NSV 01447* &	GSC 2366 3002 &	11.22 &	11.87(11.87)* &	11397.995  &	0.373042   &	EW&\\
NSV 01916  &	GSC 8959 0532 &	12.87 &	13.21(13.19)* &	11509.098  &	0.52878    &	EW&\\
NSV 02432  &	GSC 2910 0265 &	11.84 &	12.19(12.16)* &	11598.723  &	4.2650     &	EA&\\
NSV 02591  &	GSC 2413 0376 &	12.55 &	13.2:(13.10)* &	11548.612  &	0.71003    &	EW&\\
NSV 02621* &	GSC 2923 1243 &	13.0  &	13.5 (13.25)* &	11531.634  &	1.1833     &	EB:&\\
NSV 02951  &	GSC 3376 0052 &	13.97 &	15.0 (14.35)* &	11517.640  &	2.0338     &	EA&\\
NSV 03008  &	GSC 2422 0224 &	13.78 &	15.2 (13.8:)* &	11519.672  &	4.3976     &	EA&\\
NSV 03186  &	HD  262834    &	10.22 &	10.57(10.55)  &	13070.563  &	1.446303   &	EA    &    F8 (33)\\
NSV 03844  &	GSC 5412 0417 &	12.9  &	<14.4(not obs)&	12623.834  &	3.10835    &	EA&\\
NSV 04029  &	GSC 4380 1811 &	13.75 &	<14.3 (14.27)*&	11520.823  &	1.66439    &	EA&\\
NSV 04050  &	GSC 6009 3746 &	11.66 &	12.14(11.72)  &	11899.769  &	1.80488    &	EA&\\
NSV 04069  &	GSC 1941 0409 &	11.90 &	12.33(12.27)  &	11598.746  &	0.717775   &	EB&\\
NSV 04083  &	GSC 5436 2588 &	12.70 &	14.1(12.75:)  &	12388.485  &	2.51875    &	EA&\\
NSV 04207* &	GSC 1399 0798 &	12.5  &	12.9  (12.9)  &	11560.714  &	0.363675:  &	EW:&\\
NSV 04546  &	GSC 8941 0668 &	12.3  &	13.15(12.35:) &	12954.874  &	11.8884     &	EA&\\
NSV 04572* &	GSC 8589 0265 &	12.45 &	13.45(12.79)  &	12929.846  &	2.78678    &	EA&\\
NSV 05233  &	GSC 9233 0346 &	13.20 &	13.55:(13.45) &	12055.505  &	0.969605   &	EA&\\
NSV 05644  &	GSC 4400 0006 &	11.86 &	12.10 (11.9)* &	11620.769  &	0.84034    &	EA    &    F2 (14)\\
NSV 05756* &	GSC 9240 0124 &	13.00 &	13.75:(13.7:) &	13087.755  &	2.19461    &	EA&\\
NSV 06722  &	GSC 9269 2564 &	12.35 &	14.0:(12.4:)  &	12867.455  &	5.05085    &	EA&\\   
NSV 06842  &	AC  4282175   &	12.62 &	14.4:(12.72)  &	12635.842  &	1.83777    &	EA&\\
NSV 07446* &	GSC 4638 0951 &	12.10 &	12.52(12.52)* &	11420.948  &	0.48885    &	EW&\\
NSV 08493  &	GSC 0408 0226 &	11.80&	12.27(12.21)  &	11325.797  &	0.386182   &	EW&\\
NSV 10858  &	GSC 9080 1805 &	13.15&	<15.0(13.25:) &	12206.573  &	1.85188    &	EA&\\
NSV 11075* &	HD  171379    & 9.64 &	9.89:(9.89:)  &	12124.556  &   23.1868     &	EA    &    Fm del Del (2)\\
NSV 11335* &	AC  3914867   &	12.40&	13.36 (12.6)  &	12082.640  &	2.65996    &	EA&\\
NSV 11359  &	GSC 8377 0837 &	11.78&	12.28(11.88)  &	11962.854  &	1.3675     &	EA&\\
NSV 11822  &	GSC 3550 1770 &	12.64&	13.2 (12.73)* &	11483.590  &	0.90333    &	EA &\\
NSV 12263* &	GSC 1061 1409 &	11.76&	12.45:(12.40) &	11486.657  &	0.962992   &	EA&\\
NSV 12945* &	GSC 2683 3724 &	11.70&	12.15 (12.1)  &	11415.730  &	18.88       &	EB/GS:&\\
NSV 13506  &	GSC 3172 0169 &	12.32&	13.1 (12.7:)* &	11282.436  &	0.66927    &	EA&\\
NSV 13635  &	HD  235475    & 9.96 &	10.42(10.40)* &	11288.827  &	0.85785    &	EW    &    F8 (33)\\
NSV 13637* &	GSC 3173 1826 & 9.65 &	 10.14 (9.8)* &	11518.644  &	1.27268    &	EA    &    A2 (24)\\
NSV 13638  &	GSC 1662 1759 &	12.44&	12.85(12.70)  &	13185.827  &	0.427417   &	EB&\\
NSV 13695  &	GSC 4252 0433 &	11.95&	12.33(12.30)* &	11448.669  &	0.298755   &	EW:&\\
NSV 14062* &	GSC 3614 0351 &	12.44&	13.05(13.05:)*&	11423.743  &	1.9881     &	EA&\\
NSV 14110* &	GSC 3986 0860 &	10.53&	10.85:(10.8:)*&	11542.684  &	4.6722     &	EA    &    B0III (36)\\
NSV 14241  &	GSC 9337 1951 &	12.50&	13.21(13.08)  &	12134.686  &	0.337259   &	EW&\\
NSV 14327* &	GSC 3621 0146 &	12.52&	13.4 (12.75)* &	11505.640  &	1.34795    &	EA&\\
NSV 14332  &	GSC 3625 1048 &	13.06&	13.6:(13.5:)* &	11305.062  &	1.7679     &	EA&\\
NSV 14500  &	GSC 3636 0729 &	12.25&	12.81(12.78)* &	11483.638  &	4.279      &	EA&\\
NSV 15024  &	GSC 4018 2473 &	12.59&	13.20(12.80)  &	11421.720  &	11.038      &	EA&\\
NSV 16225  &	HIP 032218    & 8.91 &	 9.15 (9.05)  &	12997.720  &	4.14357    &	EA/RS:&    G3/5V (5)\\
NSV 16352* &	HD  290556    & 9.52 &	9.66 (9.64:)  &	11962.558  &	3.21472    &	EA    &    A2 (9)\\
\hline
\end{tabular}
\end{center}
\end{table}

\pagebreak

\begin{table}
\centerline{Table 1. New elements for 80 eclipsing binary stars.}
\small
\begin{center}
\begin{tabular}{ccc@{$-$}ccccc}
\hline
\multicolumn{2}{c}{Star Name} & \multicolumn{2}{c}{Magnitude range} & Epoch & Period & Type & Spectral type\\
 Variable &   Other ID & \multicolumn{2}{c}{} &  (HJD2440000+) & (days) &&\\
\hline
NSV 17227* &	HIP 033225    & 8.11 &	 8.18 (8.14)  & 8574.663   &	0.697461   &	EB/KW:&    K0 (24)\\
NSV 17353* &	GSC 9178 1586 &	13.14&	13.9:(13.85:) &	12752.573  &	1.57097    &	EA&\\
NSV 17646* &	HIP 038466    & 8.91 &	 8.98 (8.97)  &	12950.772  &	3.38771    &	EA &      B5V (2)\\
NSV 17878  &	GSC 2977 1179 &	12.65&	13.20(12.83)* &	11611.870  &	0.64453    &	EB&\\
NSV 18149* &	HIP 045171    &	7.90 &	 7.98 (7.98)  & 8594.965   &	1.115657   &	EA/KE &    A1/2III/IV (5)\\
NSV 18470* &	HD  092406    & 9.08 &	 9.37 (9.23)  &	12786.540  &    32.186      &	EA    &    Bp shell (1)\\
NSV 18601  &	HIP 054156    & 8.94 &	 9.03 (8.98)  & 8220.840   &	1.081354   &	EB    &    F2V (5)\\
NSV 19345* &	HIP 059869    & 9.55 &	10.1: (9.9:)  & 7945.451   &	11.30489    &	EA    &    G3V (2) \\
NSV 20276* &	HIP 074355    & 8.02 &	 8.14(8.13:)  & 8953.470   &	5.47798    &	EA    &    A2V (27)\\
NSV 20546* &	HD  145614    & 9.54 &	 9.72 (9.71)  &	12722.863  &	3.7297     &	EA    &    B9III (2)\\
NSV 20599  &	HIP 080022    & 8.19 &	 8.30 (8.24)  &	13170.830  &	3.19288    &	EB    &    F6/7V (2)\\
NSV 24021* &	HIP 087511    & 9.51 &	 9.77 (9.75)  & 8744.790   &	4.39435    &	EA    &    F2/3V (5)\\
NSV 24229  &	GSC 6842 1237 & 9.60 &	 9.93 (9.92)  &	12840.577  & 0.617262   &	EW:   &    B2Vne (17)\\
NSV 25285* &                  &	13.6 &	14.3: (14.2:)*&	11495.658  & 0.33999    &	EW&\\
NSV 25486* &	GSC 2713 2372 &	10.89&	11.9:(11.35:)*&	11490.400  &	112.4:       &	EB/GS&\\
NSV 25517  &	HIP 104743    &	7.94 &	 8.11 (7.97)  & 7977.020   &	11.42365    &	EA    &    F0V (5)\\
NSV 25632  &	GSC 3978 0622 &	10.00&	10.29(10.25)* &	11428.659  &	1.29827    &	EA    &    B1:V (8)\\
NSV 25859  &	GSC 3211 1072 &	12.49&	13.0:(13.0:)* &	11383.798  &	3.1875     &	EA&\\
OW Hya   * &	HIP 047427    &	6.31 &	6.66(not obs) &  8791.310  &	14.39303    &	EA    &    A0Vn (24)\\
V0340 Hya* &	HIP 061836    & 8.23 &	 8.50 (8.36)  & 7948.452   &	3.64741    &	EA    &    A0V (3)\\
V0343 Sge* &	HIP 097670    &	7.27 &	 7.37 (7.30)  & 8168.050   &	6.01426    &	EA    &    B8n (48)\\
V0726 Sco  &	HD  155534    &	10.34&	10.48(10.46)  &	12481.543  &	1.20179    &	EA/KE &    A0V (3)\\
V1129 Tau* &	HIP 017873    &	7.62 &	 7.84 (7.84)  & 8650.300   &	4.86058    &	EA/RS:&    G0V (50)\\
V2148 Cyg* &	HIP 104483    &	6.59 &	6.74 (6.7:)   & 8717.250   &	10.237      &	EA   &     B4IVp (47)\\
\hline
\end{tabular}
\end{center}
\end{table}



Notes on individual stars:\\
~\\
BX Psc    = Might be EA. Wrong period in the HIP catalogue (5.1825 d.).\\
CX CVn    = Period might be half the value given. Wrong period in the HIP catalogue is 1.64096 d. Visual binary. A=9.5; B=13.2 Hp. Sep. 1\farcs29 (Perryman et al., 1997).\\
DD Oct    = Wide visual binary. A=9.8; B=13.0 V. Sep. 21\farcs4 (Dommanget and Nys, 2002).\\
DT Cam    = Lack of observations at minima.\\
LX Mus    = Eccentric system.\\
NSV 00583 = O'Connell effect. Max. II ROTSE1= 14.2.\\
NSV 01009 = Eccentric system. Visual binary. Sep. 1\farcs5 (Worley and Douglass, 1997). \\
NSV 01447 = Primary eclipse might be the secondary.\\
NSV 02621 = Might be EA.\\
NSV 04207 = Scatter.\\
NSV 04572 = Eccentric system.\\
NSV 05756 = Faint for ASAS. Period might be half the value given. Primary eclipse might be the secondary.\\
NSV 07446 = Primary eclipse might be the secondary.\\
NSV 11075 = Slightly eccentric. Primary eclipse might be the secondary.\\
NSV 11335 = USNO-A2.0 0450-35737102.\\
NSV 12263 = Classified as L: in the NSV catalogue (Kukarkin and Kholopov, 1982).\\
NSV 12945 = Wils and Greaves (2004) give it as a DCEP with a period of 9.5 d.\\
NSV 13637 = Wide visual binary. B= GSC 3173 1682, 11.5 V. Sep. 21\farcs0 (Fabricius et al., 2002).\\
NSV 14062 = Primary eclipse might be the secondary.\\
NSV 14110 = Eccentric system. \\
NSV 14327 = Spectrum M3 in Kholopov et al. (2004) is wrong. There is no red star in the area. 2MASS colors are for an F5 star. \\
NSV 16352 = Period might be half the value given.\\
NSV 17227 = Slight O'Connell effect.\\
NSV 17353 = Period might be half the value given.\\
NSV 17646 = Koen and Eyer (2002) give period = 1.69397 d. \\
NSV 18149 = Highly distorted EA. Period 0.557808 d. in the HIP catalogue with no variability type given.\\
NSV 18470 = Peculiar lightcurve. Emission line star. Spectrum also given as A1Iab (Stephenson and Sanduleak, 1971), B1.5V (Reed, 1998) and (B5V)p shell (Buscombe, 1998). Batten et al. (1989) give a spectroscopic period of 27.595 d.\\
NSV 19345 = Slightly eccentric. No data at minima.\\
NSV 20276 = Period might be half the value given. Visual binary. A=8.4; B=9.6 Hp. Sep. 0\farcs12 (Perryman et al., 1997). \\
NSV 20546 = Slightly eccentric.\\
NSV 24021 = Slightly eccentric. Spectrum G5 in Ochsenbein (1980).\\
NSV 25285 = USNO-A2.0 1275-14063446.\\
NSV 25486 = Few cycles recorded for a reliable period determination. Classified as INS: in the NSV Supplement (Kazarovets et al., 1998).\\
NSV 25859 = Period might be half the value given.\\
OW Hya    = Visual binary. A=6.4; B=8.8 Hp. Sep. 0\farcs36 (Perryman et al., 1997) Period might be twice the value given.\\
V0340 Hya = Eccentric system. Wrong period in the HIP catalogue (3.8175 d.).\\
V0343 Sge = Eccentric system.\\
V1129 Tau = Mean magnitude changes. 0.1 magnitude difference between ASAS-3 and Hipparcos data. Amplitude of the eclipses is 0.1 mag. Period might be half the value given. Koen and Eyer give period = 1.9852 d. Possible T Tauri star according to Li and Hu (1998).\\
V2148 Cyg = Be star. Period might be wrong. Wrong period in the HIP catalogue (8.018~d.).\\


\IBVSetable{5586-t2.tex}
\IBVSecomment{The table with light curve links}


\IBVSfig{10cm}{5586-f1.eps}{Light curve of LX Mus showing ASAS-3 and Hipparcos observations.}
\IBVSfigKey{5586-f1.eps}{LX Mus}{light curve}

\IBVSfig{10cm}{5586-f2.eps}{Light curve of NSV 4572 showing ASAS-3 observations.}
\IBVSfigKey{5586-f2.eps}{NSV 4572}{light curve}

\IBVSfig{10cm}{5586-f3.eps}{Light curve of NSV 18470 showing ASAS-3 observations.}
\IBVSfigKey{5586-f3.eps}{NSV 18470}{light curve}

\IBVSfig{10cm}{5586-f4.eps}{Light curve of NSV 20599 showing ASAS-3 and Hipparcos observations.}
\IBVSfigKey{5586-f4.eps}{NSV 20599}{light curve}

\IBVSfig{10cm}{5586-f5.eps}{Light curve of V340 Hya showing ASAS-3 and Hipparcos observations.}
\IBVSfigKey{5586-f5.eps}{V340 Hya}{light curve}

\newpage

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\endreferences


\bigskip

%From: IBVS 5630
\IBVSerratum{5586}

The following information had been omitted from IBVS 5586:

Sources of spectral type (Table 1.): (1) Houk and 
Cowley, 1975. (2) Houk, 1978. (3) Houk, 1982. (5) Houk and Swift, 1999. (8) 
Kennedy, 1983. (9) Nesterov et al., 1995. (14) Kholopov et al., 2003. (17) 
Buscombe, 1998. (18) Buscombe, 1999. (24) Ochsenbein, 1980. (27) Grenier et 
al., 1999. (33) Cannon and Pickering, 1993. (36) Jaschek et al., 1964. (47) 
Jaschek, 1978. (48) Duflot et al., 1995. (50) Li and Hu, 1998.

\bigskip

%From: IBVS 5644
\IBVSerratum{5586}

The EA/RS: star NSV 16225 published as HIP 32218 is actually HIP 23385 = HD~32218.

\bigskip

%From: IBVS 5724
\IBVSerratum{5586}

Sebastian Otero reported the following error:

\begin{table}[h!]
\begin{tabular}{c l l l}
\hline
IBVS No. & item & printed & correct \\
\hline

5586 & filter (NSV 15024) & 13.20(12.80) & 13.20(12.80)* \\

\hline
\end{tabular}
\end{table}

\bigskip

%From: IBVS 5725
\IBVSerrata{5586}

Geert Hoogeveen reported the following errors:

\begin{table}[h!]
\begin{tabular}{c l l l}
\hline
IBVS No. & item & printed & correct \\
\hline
5586 & identifier (NSV 20599) & HIP 80022 & HIP 80222 \\

5586 & identifier (NSV 1916) & GSC 8959-0532 & GSC 1859-0532 \\
\hline
\end{tabular}
\end{table}

\end{document}
