\documentstyle[twoside,epsf]{article}

\input ibvs2.sty
\begin{document}

\IBVShead{5644}{18 August 2005}

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

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

\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}

\IBVStyp{ EA EB EW }
\IBVStyp{ variable stars, eclipsing binary, periods }

\IBVSabs{This research presents new elements for 80 eclipsing binaries found}
\IBVSabs{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 seventh 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. 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 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 in the NSV catalogues that had no given classification or were classified as eclipsing binaries, S, L, I, CST or VAR with no spectral type published or spectral type K or earlier 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 (*= ROTSE1 magnitudes), with the magnitude of secondary eclipse between brackets; the epoch of minimum light derived from all the data available; the period; the variability class and the spectral type with a note to the spectral type source.

\newpage

\begin{table}[!ht]
\small
\centerline{{\bf Table 1.} New elements for 80 eclipsing binary stars.}
\begin{center}
\hspace*{-1cm}
\begin{tabular}{llr@{$-$}lrlcc}
\hline
\multicolumn{2}{c}{Star Name} & \multicolumn{2}{c}{Magnitude range} & Epoch & Period & Type  &  Spectral \\
 Variable &  Other ID   & \multicolumn{2}{c}{(V)} & (HJD2440000+) & (days) & & type\\
\hline
AL Dor*   	& HIP 022229   	& 7.72 	& 8.15:(8.1:) 	& 8665.345	& 14.90532  	& EA/DM   & F8V (1)\\
FV Vel*   	& GSC 7705 2098	& 10.81	&  12.20(10.89)	& 13418.774 	& 1.52110  	& EA      & \\
~*	        & GSC 7705 1501	& 10.13	&  10.58(10.47)	& 12842.444 	& 1.95847  	& EA      & F5 (15)\\
NSV 00353*	& HD 005513    	& 9.51 	& 9.92 (9.9:)*  & 11482.637 	& 2.398    	& EA      & A2V (36)\\
NSV 00651 	& GSC 3684 1954	& 12.24	&  12.7:(12.5:)*& 11589.596 	& 0.7961   	& EB      & \\
NSV 00733 	& GSC 3289 0109	& 9.97 	& 10.22(10.07:)*& 11478.588 	& 8.8695   	& EA      & A0 (24)\\
NSV 01114*	& GSC 3324 0639	& 11.32	&  11.80(11.8:)*& 11455.805 	& 4.50655  	& EA      & B9 (14)\\
NSV 01652 	& GSC 4742 0018	& 13.23	&  14.2: (13.9)	& 13043.615 	& 0.396604 	& EW/KW   & \\
NSV 01668*	& GSC 0094 0935	& 13.32	& 14.15(14.05:) & 11609.717 	& 1.188245 	& EA      & \\
NSV 01677*	& GSC 1830 0503	& 12.55	& 13.30(13.3:)	& 12661.589 	& 2.04093  	& EA      & \\
NSV 01687 	& GSC 8512 0414	& 11.45	& 12.12(11.7:)	& 13470.550 	& 0.785242 	& EA      & \\
NSV 02826*	& HIP 028836   	& 8.01 	& 8.62 (8.16)	& 12939.825	& 10.3160   	& EA      & A3(m)A7-A7 (3)\\
NSV 02850*	& HD 042107    	& 9.68 	& 9.98:(9.97:)* & 11464.843 	& 1.9614   	& EA      & A0 (33)\\
NSV 02889*      &              	& 13.15	& 14.0:(13.9:)	& 11613.752 	& 0.336611 	& EW:     & \\
NSV 02962*	& HD 288671   	& 10.58	& 10.93(10.93)	& 12653.650 	& 3.19669  	& EA      & G0 (45)\\
NSV 03371 	& HD 053595    	& 9.13 	& 9.65: (9.14)	& 12776.580     & 123.21     	& EA      & B5Vn (47)\\
NSV 03710*	& GSC 0191 1523	& 12.86	& 13.45(13.45)	& 11629.654 	& 4.01732  	& EA      & \\
NSV 03754*	& GSC 4531 0265	& 10.76	& 11.25(11.18)* & 11589.757 	& 0.255885 	& EW/KW   & \\
NSV 04067*	& GSC 6573 4986	& 11.73	& 13.0 (11.85)	& 13438.563 	& 0.885933 	& EA      & \\
NSV 04322 	& GSC 1950 1411	& 12.82	& 13.6 (13.5)	& 11603.767 	& 2.35439  	& EA      & \\
NSV 04537 	& GSC 6605 1593	& 13.55	& 14.6:(13.75)	& 11553.950 	& 0.654531 	& EA      & \\
NSV 04629*	& HD 084482    	& 9.14 	& 9.7:(9.20)*   & 11284.615 	& 3.28935  	& EA      & G (24)\\
NSV 04881*	& HIP 051425   	& 6.19 	& 6.36 (6.35) 	& 8175.220	& 16.9330   	& EA      & B4V (1)\\
NSV 04996*	& GSC 8970 1236	& 10.90	& 11.30(11.3:)	& 11888.780	& 15.509    	& EA      & \\
NSV 05154*	& GSC 7206 1459	& 11.05	& 11.56(11.53:)	& 12406.540 	& 4.67017  	& EA      & \\
NSV 05435 	& HD 104649    	& 8.09 	& 8.18 (8.14)	& 12861.524 	& 4.7470   	& EB      & O9.5V (55)\\
NSV 05488*	& GSC 7240 0891	& 12.85	& 13.5 (13.5:)	& 13068.750 	& 3.10366  	& EA      & \\
NSV 05504*	& GSC 7236 0806	& 12.22	& 13.15:(12.3)	& 13108.757 	& 2.34751  	& EA      & \\
NSV 05648*	& GSC 9412 0116	& 13.45	& 14.2 ($-$)   	& 12638.790 	& 3.0341   	& EA      & \\
NSV 05849 	& GSC 7255 0127	& 13.65	& 14.3:(14.2:)	& 12736.810 	& 0.51104  	& EB:     & \\
NSV 06303*	& GSC 3463 0561	& 10.92	& 11.40:(11.4:)*& 11338.725 	& 6.33448  	& EA      & F7 (14)    \\
NSV 06956*	& HD 133766    	& 7.80 	& 8.30 (8.26:)	& 12705.750	& 28.877    	& EA      & A9III/IV (1)\\
NSV 06989*	& GSC 6178 0419	& 11.58	& 12.1 (11.63)	& 12095.567 	& 2.44206  	& EA      & \\
NSV 07164 	& GSC 6785 0001	& 13.1 	& 13.7 (13.45)	& 13449.847 	& 0.590394 	& EA      & \\
NSV 07445*      &              	& 13.4 	& 14.5: (13.6)	& 12535.580 	& 2.1315   	& EA      & \\
NSV 07638 	& GSC 7344 0280	& 13.45	& 15.0:(13.65)	& 12521.630 	& 3.35345  	& EA      & \\
NSV 07730*	& GSC 5626 0289	& 13.15	& 13.75:(13.35)	& 12749.804 	& 0.424074 	& EB/KW   & \\
NSV 07855 	& GSC 9278 0161	& 11.72	& 12.75(11.85)	& 12439.601 	& 1.92834  	& EA      & \\
NSV 07907*	& GSC 9443 3629	& 12.31	& 12.64(12.45:)	& 13523.692 	& 0.820805 	& EA:     & \\
NSV 07931 	& GSC 5637 0258	& 13.75 & 14.35(14.35)	& 11352.790 	& 0.479238 	& EW      & \\
NSV 08010*	& GSC 7371 0561	& 10.40 &  <11.2(<10.5)	& 11995.070	& 50.007    	& EA      & \\
NSV 08017*	& HD 152219    	& 7.57 	& 7.80 (7.73)	& 13182.567 	& 4.24038  	& EA      & O9.5IV (2)\\
NSV 08125*      &             	& 13.37 & 14.2:(13.75)	& 13417.842 	& 0.52382  	& EA:     & \\
NSV 08194*	& GSC 7869 0281	& 12.6  & 13.15 (13.1:)	& 13219.530 	& 7.4158   	& EA      & \\
NSV 08441*	& GSC 5066 0736	& 12.15 & 12.6:(12.6:)	& 12720.838 	& 0.43096  	& EW      & \\
NSV 08472*	& GSC 6237 0573	& 12.75 & 13.5 (13.5)	& 13544.686 	& 3.3337   	& EA      & \\
NSV 08486*	& GSC 6241 0062	& 13.2 	& 14.0: (13.9)	& 12841.670 	& 1.87423  	& EA      & \\
NSV 08629*	& GSC 8736 1572	& 13.6 	& 14.25:(13.8:)	& 12508.663 	& 0.55277  	& EB:     & \\
NSV 08766*	& GSC 6235 2570	& 12.7 	& 14.0:(12.85)	& 12756.768 	& 1.70477  	& EA      & \\
NSV 09542 	& GSC 8355 0968	& 11.41	& 12.0 (11.85)	& 13526.855 	& 3.14535  	& EA      & \\
NSV 09550 	& GSC 0997 0236	& 12.30	& 2.85:(12.40)	& 13077.904 	& 3.3515   	& EA      & \\
NSV 09637 	& GSC 0994 0998	& 12.57	& 13.2  (13.0)	& 11453.688 	& 0.384055 	& EB/KW:  & \\
NSV 09816*	& GSC 6853 1925	& 12.43	& 13.1 (13.0:)	& 13263.542 	& 4.4361   	& EA      & \\
NSV 10161 	& GSC 8747 0760	& 13.5 	& 14.15:(13.9:)	& 12548.610 	& 0.96025  	& EA      & \\
NSV 10993*	& GSC 1032 1378	& 12.65	& 13.05(12.77)	& 11448.350	& 40.0      	& EA      & \\
NSV 11107*	& GSC 8745 1479	& 11.79	& 12.3 (12.28)	& 12739.824 	& 3.45563  	& EA      & \\
\hline
\end{tabular}
\end{center}
\end{table}

\newpage

\begin{table}[!ht]
\small
\centerline{{\bf Table 1.} New elements for 80 eclipsing binary stars.}
\begin{center}
\hspace*{-1cm}
\begin{tabular}{llr@{$-$}lrlcc}
\hline
\multicolumn{2}{c}{Star Name} & \multicolumn{2}{c}{Magnitude range} & Epoch & Period & Type  &  Spectral \\
 Variable &  Other ID   & \multicolumn{2}{c}{(V)} & (HJD2440000+) & (days) & & type\\
\hline
NSV 11441*	& GSC 1034 0184	& 12.47	& 13.05(13.0:)	& 12888.602 	& 3.63592  	& EA      & A5 (45)     \\ 
NSV 12008 	& GSC 1063 0905	& 13.15	& 14.0 (13.9:)	& 12868.547 	& 0.396110 	& EW      & \\
NSV 12699 	& GSC 1621 0052	& 13.2 	& 14.0  (13.9)	& 12918.604 	& 0.395831 	& EW      & \\
NSV 13304*	& GSC 0520 1197	& 12.51	& 13.5 (12.80)	& 12930.625 	& 0.558654 	& EA      & \\
NSV 13492 	& GSC 4247 0864	& 11.39	& 11.87(11.82)* & 11481.644 	& 2.5035   	& EA      & \\
NSV 14149*	& GSC 4476 0892	& 12.20	& 12.54(12.40)* & 11426.642 	& 0.62455  	& EB      & \\
NSV 14288* 	& GSC 4277 0789	& 11.40	& 11.85(11.45)* & 11338.882 	& 1.25996  	& EA      & \\
NSV 15208*	& HD 005464    	& 9.04 	& 9.37 (9.33)	& 12627.610 	& 0.439298 	& EW/KE   & A2 (33)\\
NSV 15394 	& HIP 008472   	& 8.45 	& 8.63 (8.58) 	& 8375.910 	& 7.43367  	& EA      & A2mA5-A7 (1)\\
NSV 16254*	& SAO 131822   	& 9.32 	& 9.41 (9.36)	& 13085.591 	& 0.533437 	& EB      & F0 (24)\\
NSV 16801*	& HD 043164    	& 9.43 	& 9.83 (9.70)	& 13517.483 	& 2.23415  	& EA      & F5/6IV/V (1)\\
NSV 17520*	& HD 060941    	& 9.13 	& 9.65 (9.39)	& 12520.898 	& 7.24816  	& EA      & A0V (14)\\
NSV 19754*	& CPD $-$61 3639& 10.09	& 10.36(10.30)	& 13474.580	& 31.029    	& EA      & B1Ia (47)\\
NSV 20056 	& HIP 069358    & 7.67 	& 7.80 (7.72) 	& 8433.960 	& 2.67096  	& EB      & B4/5III/IV (1)\\
NSV 20247 	& HD 133950    	& 8.54 	& 8.69 (8.61)	& 13419.846 	& 1.66703  	& EA      & F0V (3)\\
NSV 20263*	& HIP 074348    & 8.94 	& 9.05 (9.03)	& 12878.610 	& 6.14395  	& EA      & A1mA3-A6 (2)\\
NSV 20802*	& HD 326320    	& 9.77 	& 10.19(10.07)	& 13478.825 	& 1.317716 	& EA      & B0V (45)\\
NSV 24327*	& HIP 089218    & 8.40 	& 8.55 ($-$)   	& 12437.660	& 34.536    	& EA      & O7.5If+O9I (60)\\
NSV 24452 	& HIP 090773    & 9.11 	& 9.20 (9.12) 	& 8528.814 	& 5.64797  	& EA      & F2IV (1)\\
NSV 24909*	& HD 187601    	& 8.78 	& 8.96(<0.01:)	& 11421.753 	& 2.1774   	& EA      & G5V (14)\\
NSV 25338*	& HIP 102744    & 9.10 	& 9.6:  ($-$)  	& 11995.160	& 20.8553   	& EA+SRD: & G6/G8III (2)\\
NSV 25881 	& HIP 110370    & 8.49 	& 8.60 (8.60) 	& 8367.865 	& 3.69948  	& EA      & F8 (33)  \\
NSV 26112*	& HIP 116475    & 8.81 	& 8.93:(8.92:) 	& 8077.581	& 10.28857  	& EA/DM   & F7V (3)\\
V0392 Vul*	& HIP 096228    & 9.82 	& 10.18(10.02)	& 12888.570 	& 1.351425 	& EB      & B8 (9)\\
\hline
\end{tabular}
\end{center}
Sources of spectral type: (1) Houk and Cowley, 1975. (2) Houk, 1978. (3) Houk, 1982. (9) Nesterov et al., 1995. (14) Kholopov et al., 2004. (15) Spencer and Jackson, 1939. (24) Ochsenbein, 1980. (33) Cannon and Pickering, 1993. (36) Jaschek et al., 1964. (45) Skiff, 2005. (47) Jaschek, 1978. (55) Cruz-Gonzßlez et al., 1974. (60) Pourbaix et al., 2004.
\end{table}

\vspace*{-0.3cm}


\IBVSetable{5644-t2.tex}
\IBVSecomment{The table with light curve links}

Notes on individual stars:

AL Dor = Eccentric system. Few eclipses recorded. Primary eclipse might be the secondary.\\
FV Vel = Wrong identification in the GCVS (GSC 7705 1243) and in Dvorak, 2003 (GSC~7705 1501). GCVS period (3.04228 d.) is wrong. The ASAS catalogue (Pojmanski, 2003) gives a period of 1.52117 days.\\
GSC 7705 1501 = Wrongly identified as FV Velorum in Dvorak (2003). The ASAS catalogue (Pojmanski, 2003) gives a period of 1.9585 days.\\
NSV 00353 = Primary eclipse might be the secondary.\\
NSV 01114 = L-type in the NSV catalogue (Kukarkin and Kholopov, 1982). Period might be half the value given.\\
NSV 01668 = Slightly eccentric system.\\
NSV 01677 = IN:-type in the NSV catalogue.\\
NSV 02826 = Very eccentric system.\\
NSV 02850 = S:-type in the NSV catalogue. Primary eclipse might be the secondary.\\
NSV 02889 = USNO A-2.0 1125-03672692 = 2MASS J06161279+2539556.\\
NSV 02962 = Primary eclipse might be the secondary.\\
NSV 03710 = Period might be half the value given. Primary eclipse might be the secondary.\\
NSV 03754 = Strong O'Connell effect. Max II = 10.86. L-type in the NSV catalogue.\\
NSV 04067 = S:-type in the NSV catalogue.\\
NSV 04629 = I-type in the NSV catalogue.\\
NSV 04881 = Eccentric system. Total eclipses.\\
NSV 04996 = Period might be half the value given. Primary eclipse might be the secondary.\\
NSV 05154 = RR-type in the NSV catalogue. Period might be half the value given.\\
NSV 05488 = Period might be half the value given. Primary eclipse might be the secondary. S-type in the NSV catalogue.\\
NSV 05504 = S-type in the NSV catalogue.\\
NSV 05648 = Period might be twice the value given.\\
NSV 06303 = Slightly eccentric system. S:-type in the NSV catalogue.\\
NSV 06956 = Eccentric system.\\
NSV 06989 = L-type in the NSV catalogue.\\
NSV 07445 = USNO-A2.0 0600-19625998 = 2MASS J16070488-2916480.  \\
NSV 07730 = Amplitude reduced by light from nearby stars.\\
NSV 07907 = Might be EB-type. Slight O'Connell effect.\\
NSV 08010 = Lack of observations at mideclipse I and II.\\
NSV 08017 = In NGC 6231. Amplitude corrected for light contamination from nearby stars in ASAS data using the GCPD V-magnitudes (Mermilliod et al., 1997) as a reference. Spectroscopic periods of 4.1593 and 4.160 days listed in the SB9 catalogue (Pourbaix et al., 2004)\\
NSV 08125 = USNO-A2.0 0225-26840934 = 2MASS J17035968-6324356.\\
NSV 08194 = Period might be half the value given.\\
NSV 08441 = S-type in the NSV catalogue.\\
NSV 08472 = S-type in the NSV catalogue. Period might be half the value given. Primary eclipse might be the secondary.  \\
NSV 08486 = Period might be half the value given. L-type in the NSV catalogue.\\
NSV~08629 = RR:-type in the NSV catalogue.\\
NSV 08766 = The period given in Otero (2003b) was twice the real value.\\
NSV 09816 = Period might be half the value given.\\
NSV 10993 = EW:-type in the NSV catalogue.\\
NSV 11107 = Period might be half the value given.\\
NSV 11441 = NSVS amplitude is reduced by light from nearby stars. S-type in the NSV catalogue.\\
NSV 13304 = S-type in the NSV catalogue. NSV position is wrong. \\
NSV 14149 = S-type in the NSV catalogue.\\
NSV 14288 = NSV position is wrong. \\
NSV 15208 = Visual binary. A= 9\fmm2; B= 10\fmm8 Hp. Sep. 1\farcs01 (Perryman et al., 1997).\\
NSV 16254 = Strong O'Connell effect. Max II = 9.35.\\
NSV 16801 = Visual binary. A= 9\fmm7; B= 11\fmm1 Vt. Sep. 2\farcs16 (Fabricius et al., 2002).\\
NSV 17520 = In NGC 2422. \\
NSV 19754 = Eccentric system.\\
NSV 20263 = Apsidal motion. Primary eclipse period given. Secondary eclipse period is 6.14416 d.\\
NSV 20802 = In NGC 6231.\\
NSV 24327 = Spectroscopic binary with period 34.54 d. in Pourbaix et al. (2004).\\
NSV 24909 = Period might be twice the value given with similar minima.\\
NSV 25338 = SRD period is 40.87 days with range 9\fmm1 - 9\fmm3 (V).\\
NSV 26112 = Eccentric system. Visual binary. A= 9\fmm1; B= 11\fmm8. Sep. 3\farcs0 (Worley et al., 1997).\\
V0392 Vul = ACV: in the GCVS based on the Hipparcos catalogue that classifies it as ACV with a period of 0.67571 d.

\newpage

\IBVS2fig{7cm}{5644-f1.eps}{Light curve of NSV 2826 showing ASAS-3 and Hipparcos observations.}{5644-f2.eps}{Light curve of NSV 6956 showing ASAS-3 observations.}

\IBVSfigKey{5644-f1.eps}{NSV 2826}{light curve}
\IBVSfigKey{5644-f2.eps}{NSV 6956}{light curve}

\IBVSfig{7cm}{5644-f3.eps}{Light curve of NSV 3754 showing NSVS observations.}
\IBVSfigKey{5644-f3.eps}{NSV 3754}{light curve}


{\bf Acknowledgements:}\\

The authors want to thank John Greaves for his collaboration and suggestions. This research has made use of the SIMBAD and VizieR databases operated at the Centre de Donn\'ees Astronomiques (Strasbourg) in France and the data from the Northern Sky Variability Survey created jointly by the Los Alamos National Laboratory and University of Michigan. The NSVS was funded by US Department of Energy, the National Aeronautics and Space Administration and the National Science Foundation.

\IBVSfig{9cm}{5644-f4.eps}{Light curve of NSV 4881 showing ASAS-3 and Hipparcos observations.}
\IBVSfigKey{5644-f4.eps}{NSV 4881}{light curve}

\IBVSfig{9cm}{5644-f5.eps}{Light curve of NSV 20056 showing ASAS-3 and Hipparcos observations.}
\IBVSfigKey{5644-f5.eps}{NSV 20056}{light curve}

\IBVSfig{9cm}{5644-f6.eps}{Light curve of NSV 25338 showing ASAS-3 and Hipparcos observations.}
\IBVSfigKey{5644-f6.eps}{NSV 25338}{light curve}

\IBVSfig{8cm}{5644-f7.eps}{The semiregular light variability of NSV 25338 from ASAS-3 data.}
\IBVSfigKey{5644-f7.eps}{NSV 25338}{light curve}


\vspace*{-2cm}

\references

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\ADSBIBCODE{1978MSS...C02....0H}

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\ADSBIBCODE{1982MSS...C03....0H}

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\ADSBIBCODE{1964PLPla..28....1J}

Jaschek, M., 1978, {\it Bull. Inform. CDS}, {\bf 15}, 121, Catalogue of selected spectral types in the MK system 

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\endreferences

\bigskip

\IBVSerratum{5586}

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


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