Orbital parameters and period variation studies of the short-period eclipsing binaries FG Sct, VZ Lib and VZ Psc
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摘要
We present eight sets of new light curves for binaries FG Sct, VZ Lib and VZ Psc, which are all contact eclipsing binaries with short orbital periods. We carried out our observations from 2016 to 2017 using the 60-cm telescope administered by National Astronomical Observatories, Chinese Academy of Sciences, the Holcomb Observatory at Butler University and the SARA-CT telescope in Chile. We firstly determined the orbital parameters of FG Sct using the O-C method and obtained photometric solutions utilizing the updated W-D program. We also studied its period variation and discovered that its orbital period is decreasing at a rate of 6.39(±0.24) ×10~(-8) d yr~(-1), which was likely caused by mass transfer from the primary component to the secondary component or angular momentum interchange between the two components via magnetic interactions. For VZ Lib and VZ Psc, we simultaneously analyzed their BV RI light curves in conjunction with the published radial velocities. In order to obtain the orbital parameters of VZ Lib, we also analyzed its period variation and revised cyclic change, which could be attributed to either the light-time effect due to a tertiary companion or magnetic activity cycle mechanism. We derived the periods of the tertiary component of VZ Lib to be 48.7(±0.1) yr or magnetic cycle to be 46.9(±1.9) yr.Strong emission lines at Ca II H+K, Hα, Hβ, Hγ and Ca II IRT were detected in the LAMOST spectra of VZ Psc, which imply chromospheric activities in this binary system.
We present eight sets of new light curves for binaries FG Sct, VZ Lib and VZ Psc, which are all contact eclipsing binaries with short orbital periods. We carried out our observations from 2016 to 2017 using the 60-cm telescope administered by National Astronomical Observatories, Chinese Academy of Sciences, the Holcomb Observatory at Butler University and the SARA-CT telescope in Chile. We firstly determined the orbital parameters of FG Sct using the O-C method and obtained photometric solutions utilizing the updated W-D program. We also studied its period variation and discovered that its orbital period is decreasing at a rate of 6.39(±0.24) ×10~(-8) d yr~(-1), which was likely caused by mass transfer from the primary component to the secondary component or angular momentum interchange between the two components via magnetic interactions. For VZ Lib and VZ Psc, we simultaneously analyzed their BV RI light curves in conjunction with the published radial velocities. In order to obtain the orbital parameters of VZ Lib, we also analyzed its period variation and revised cyclic change, which could be attributed to either the light-time effect due to a tertiary companion or magnetic activity cycle mechanism. We derived the periods of the tertiary component of VZ Lib to be 48.7(±0.1) yr or magnetic cycle to be 46.9(±1.9) yr.Strong emission lines at Ca II H+K, Hα, Hβ, Hγ and Ca II IRT were detected in the LAMOST spectra of VZ Psc, which imply chromospheric activities in this binary system.
We present eight sets of new light curves for binaries FG Sct, VZ Lib and VZ Psc, which are all contact eclipsing binaries with short orbital periods. We carried out our observations from 2016 to 2017 using the 60-cm telescope administered by National Astronomical Observatories, Chinese Academy of Sciences, the Holcomb Observatory at Butler University and the SARA-CT telescope in Chile. We firstly determined the orbital parameters of FG Sct using the O-C method and obtained photometric solutions utilizing the updated W-D program. We also studied its period variation and discovered that its orbital period is decreasing at a rate of 6.39(±0.24) ×10~(-8) d yr~(-1), which was likely caused by mass transfer from the primary component to the secondary component or angular momentum interchange between the two components via magnetic interactions. For VZ Lib and VZ Psc, we simultaneously analyzed their BV RI light curves in conjunction with the published radial velocities. In order to obtain the orbital parameters of VZ Lib, we also analyzed its period variation and revised cyclic change, which could be attributed to either the light-time effect due to a tertiary companion or magnetic activity cycle mechanism. We derived the periods of the tertiary component of VZ Lib to be 48.7(±0.1) yr or magnetic cycle to be 46.9(±1.9) yr.Strong emission lines at Ca II H+K, Hα, Hβ, Hγ and Ca II IRT were detected in the LAMOST spectra of VZ Psc, which imply chromospheric activities in this binary system.
引文
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Agerer,F.,&Huebscher,J.1998,Information Bulletin on Variable Stars,4606
Agerer,F.,&Hubscher,J.2002,Information Bulletin on Variable Stars,5296
Akaike,H.1974,IEEE Transactions on Automatic Control,19,716
Applegate,J.H.1992,Ap J,385,621
Ba?st¨urk,¨O.,Zola,S.,Liakos,A.,et al.2015,New Astron.,41,42
Barden,S.C.1985,Ap J,295,162
Barone,F.,Milano,L.,Russo,G.,&Sarna,M.J.1989,Ap&SS,159,67
Bonnardeau,M.2009,Journal of the American Association of Variable Star Observers(JAAVSO),37,137
Bradstreet,D.H.1985,Ap JS,58,413
Brat,L.,Trnka,J.,Smelcer,L.,et al.2011,Open European Journal on Variable Stars,137,1
Burnham,K.P.,&Anderson,D.R.2002,Model selection and inference:a practical information-theoretic approach(2nd edn.:Springer-Verlag)
Christopoulou,P.-E.,Papageorgiou,A.,Vasileiadis,T.,&Tsantilas,S.2012,AJ,144,149
Claria,J.J.,&Lapasset,E.1981,Information Bulletin on Variable Stars,2035
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Copeland,H.,Jensen,J.O.,&Jorgensen,H.E.1970,A&A,5,12
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Diethelm,R.2006,Information Bulletin on Variable Stars,5713
Diethelm,R.2010,Information Bulletin on Variable Stars,5945
Diethelm,R.2011a,Information Bulletin on Variable Stars,5992
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Diethelm,R.2012a,Information Bulletin on Variable Stars,6029
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Dvorak,S.W.2003,Information Bulletin on Variable Stars,5378
Dvorak,S.W.2006,Information Bulletin on Variable Stars,5677
Eggen,O.J.1967,Ap J,150,L111
Erdem,A.,&¨Ozt¨urk,O.2016,New Astron.,48,33
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Hrivnak,B.J.,Guinan,E.F.,&Lu,W.1995,Ap J,455,300
Hubscher,J.,&Walter,F.2007,Information Bulletin on Variable Stars,5761
Hubscher,J.,Steinbach,H.-M.,&Walter,F.2009,Information Bulletin on Variable Stars,5889
Hubscher,J.2013,Information Bulletin on Variable Stars,6084
Hubscher,J.2017,Information Bulletin on Variable Stars,6196
Irwin,J.B.1952,Ap J,116,211
Kaluzny,J.1986,Acta Astronomica,36,121
Kazuo,K.2013,VSOLJ Variable Star Bulletin,55,1
Krajci,T.2006,Information Bulletin on Variable Stars,5690
Kriwattanawong,W.,Tasuya,O.,&Poojon,P.2016,New Astron.,44,12
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Lanza,A.F.,Rodono,M.,&Rosner,R.1998,MNRAS,296,893
Lanza,A.F.,&Rodon`o,M.1999,A&A,349,887
Lanza,A.F.,&Rodon`o,M.2002,Astronomische Nachrichten,323,424
Lee,J.W.,Kim,S.-L.,Lee,C.-U.,et al.2013,Ap J,763,74
Li,K.,Hu,S.,Guo,D.,et al.2015,New Astron.,41,17
Li,K.,Hu,S.-M.,Jiang,Y.-G.,Chen,X.,&Ren,D.-Y.2014,New Astron.,30,64
Liao,W.-P.,Qian,S.-B.,Zhao,E.-G.,&Jiang,L.-Q.2014,New Astron.,31,65
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Lucy,L.B.1967,ZAp,65,89
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Ma,S.,Li,K.,Li,Q.-C.,&Gao,H.-Y.2018,New Astron.,59,1
Maceroni,C.,van Hamme,W.,&van’t Veer,F.1990,A&A,234,177
Marino,G.,Arena,C.,Bellia,I.,et al.2010,Information Bulletin on Variable Stars,5917
Mayer,P.1990,Bulletin of the Astronomical Institutes of Czechoslovakia,41,231
Milano,L.,Russo,G.,&Terzan,A.1987,A&A,183,265
Milone,E.F.,Hrivnak,B.J.,&Fisher,W.A.1985,AJ,90,354
Montes,D.,Fernandez-Figueroa,M.J.,de Castro,E.,&Cornide,M.1995,A&A,294,165
Nagai,K.1999,VSOLJ Variable Star Bulletin,33,1
Nagai,K.2001,VSOLJ Variable Star Bulletin,38,1
Nagai,K.2002,VSOLJ Variable Star Bulletin,39,1
Nagai,K.2003,VSOLJ Variable Star Bulletin,40,1
Nagai,K.2004,VSOLJ Variable Star Bulletin,42,1
Nagai,K.2005,VSOLJ Variable Star Bulletin,43,1
Nagai,K.2006,VSOLJ Variable Star Bulletin,44,1
Nagai,K.2007,VSOLJ Variable Star Bulletin,45,1
Nagai,K.2008a,VSOLJ Variable Star Bulletin,47,1
Nagai,K.2008b,VSOLJ Variable Star Bulletin,46,1
Nagai,K.2009,VSOLJ Variable Star Bulletin,48,1
Nagai,K.2010,VSOLJ Variable Star Bulletin,50,1
Nagai,K.2011,VSOLJ Variable Star Bulletin,51,1
Nagai,K.2012,VSOLJ Variable Star Bulletin,53,1
Nagai,K.2014,VSOLJ Variable Star Bulletin,56,1
Nagai,K.2015,VSOLJ Variable Star Bulletin,59,1
Nagai,K.2016,VSOLJ Variable Star Bulletin,61,1
Nagai,K.2017,VSOLJ Variable Star Bulletin,63,1
Nelson,R.H.2004,Information Bulletin on Variable Stars,5493
Noori,H.R.,&Abedi,A.2017,New Astron.,56,5
Ogloza,W.,Niewiadomski,W.,Barnacka,A.,et al.2008,Information Bulletin on Variable Stars,5843
Paschke,A.,&Brat,L.2006,Open European Journal on Variable Stars,23,13
Perryman,M.A.C.,Lindegren,L.,Kovalevsky,J.,et al.1997,A&A,323,L49
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Pribulla,T.,&Rucinski,S.M.2006,AJ,131,2986
Prˇsa,A.,&Zwitter,T.2005,Ap J,628,426
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Rucinski,S.M.,&Duerbeck,H.W.2006,AJ,132,1539
Samec,R.G.1989,PASP,101,661
Samec,R.G.,&Bookmyer,B.B.1987,Information Bulletin on Variable Stars,2990
Samolyk,G.2009,Journal of the American Association of Variable Star Observers(JAAVSO),37,44
Senavci,H.V.,Tanriverdi,T.,Torun,E.,et al.2007,Information Bulletin on Variable Stars,5754
Singh,M.,&Chaubey,U.S.1986,Ap&SS,124,389
Skrutskie,M.F.,Cutri,R.M.,Stiening,R.,et al.2006,AJ,131,1163
Szalai,T.,Kiss,L.L.,Mészáros,S.,Vinkó,J.,&Csizmadia,S.2007,A&A,465,943
Watanabe,T.2000,VSOLJ Variable Star Bulletin,37,1
Watson,C.L.2006,Journal of the American Association of Variable Star Observers(JAAVSO),35,318
West,A.A.,Hawley,S.L.,Walkowicz,L.M.,et al.2004,AJ,128,426
Wilson,R.E.1979,Ap J,234,1054
Wilson,R.E.1990,Ap J,356,613
Wilson,R.E.1994,PASP,106,921
Wilson,R.E.,&Devinney,E.J.1971,Ap J,166,605
Wolff,S.C.,Wallerstein,G.,&Sandage,A.R.1965,PASP,77,370
Xiang,F.-Y.,Yu,Y.-X.,&Xiao,T.-Y.2015,AJ,149,62
Yang,Y.,&Liu,Q.2003,PASP,115,748
Yang,Y.-G.,Dai,J.-M.,Yin,X.-G.,&Xiang,F.-Y.2007,AJ,134,179
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Yang,Y.-G.,Qian,S.-B.,&Dai,H.-F.2013,AJ,145,60
Yi,Z.,Luo,A.,Song,Y.,et al.2014,AJ,147,33
Yu,Y.-X.,Zhang,X.-D.,Hu,K.,&Xiang,F.-Y.2017,New Astron.,55,13
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Zhang,L.,Lu,H.,Han,X.L.,et al.2018,New Astron.,61,36
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Zola,S.,Rucinski,S.M.,Baran,A.,et al.2004,Acta Astronomica,54,299
1IRAF is distributed by the National Optical Astronomy Observatories, which are operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.
Agerer,F.,&Huebscher,J.1998,Information Bulletin on Variable Stars,4606
Agerer,F.,&Hubscher,J.2002,Information Bulletin on Variable Stars,5296
Akaike,H.1974,IEEE Transactions on Automatic Control,19,716
Applegate,J.H.1992,Ap J,385,621
Ba?st¨urk,¨O.,Zola,S.,Liakos,A.,et al.2015,New Astron.,41,42
Barden,S.C.1985,Ap J,295,162
Barone,F.,Milano,L.,Russo,G.,&Sarna,M.J.1989,Ap&SS,159,67
Bonnardeau,M.2009,Journal of the American Association of Variable Star Observers(JAAVSO),37,137
Bradstreet,D.H.1985,Ap JS,58,413
Brat,L.,Trnka,J.,Smelcer,L.,et al.2011,Open European Journal on Variable Stars,137,1
Burnham,K.P.,&Anderson,D.R.2002,Model selection and inference:a practical information-theoretic approach(2nd edn.:Springer-Verlag)
Christopoulou,P.-E.,Papageorgiou,A.,Vasileiadis,T.,&Tsantilas,S.2012,AJ,144,149
Claria,J.J.,&Lapasset,E.1981,Information Bulletin on Variable Stars,2035
Collier Cameron,A.,Wilson,D.M.,West,R.G.,et al.2007,MNRAS,380,1230
Copeland,H.,Jensen,J.O.,&Jorgensen,H.E.1970,A&A,5,12
Covey,K.R.,Ivezi′c,ˇZ.,Schlegel,D.,et al.2007,AJ,134,2398
Cox,A.N.2000,Allen’s astrophysical quantities(New York:AIP Press;Springer)
Davidge,T.J.,&Milone,E.F.1984,Information Bulletin on Variable Stars,2639
Demircan,O.,Erdem,A.,Ozdemir,S.,et al.2003,Information Bulletin on Variable Stars,5364
Diethelm,R.2006,Information Bulletin on Variable Stars,5713
Diethelm,R.2010,Information Bulletin on Variable Stars,5945
Diethelm,R.2011a,Information Bulletin on Variable Stars,5992
Diethelm,R.2011b,Information Bulletin on Variable Stars,5960
Diethelm,R.2012a,Information Bulletin on Variable Stars,6029
Diethelm,R.2012b,Information Bulletin on Variable Stars,6011
Diethelm,R.2013,Information Bulletin on Variable Stars,6042
Dvorak,S.W.2003,Information Bulletin on Variable Stars,5378
Dvorak,S.W.2006,Information Bulletin on Variable Stars,5677
Eggen,O.J.1967,Ap J,150,L111
Erdem,A.,&¨Ozt¨urk,O.2016,New Astron.,48,33
Erkan,N.,&Ula?s,B.2016,New Astron.,46,73
Fan,Y.-F.,Bai,J.-M.,Zhang,J.-J.,et al.2015,RAA(Research in Astronomy and Astrophysics),15,918
Hoffman,D.I.,Harrison,T.E.,Mc Namara,B.J.,et al.2006,AJ,132,2260
Hoffmeister,C.1933,Astronomische Nachrichten,247,281
Hoˇnková,K.,Juryˇsek,J.,Lehk′y,M.,et al.2013,Open European Journal on Variable Stars,160,1
Honková,K.,Juryˇsek,J.,Lehk′y,M.,et al.2014,Open European Journal on Variable Stars,165,1
Hrivnak,B.J.,&Milone,E.F.1989,AJ,97,532
Hrivnak,B.J.,Guinan,E.F.,&Lu,W.1995,Ap J,455,300
Hubscher,J.,&Walter,F.2007,Information Bulletin on Variable Stars,5761
Hubscher,J.,Steinbach,H.-M.,&Walter,F.2009,Information Bulletin on Variable Stars,5889
Hubscher,J.2013,Information Bulletin on Variable Stars,6084
Hubscher,J.2017,Information Bulletin on Variable Stars,6196
Irwin,J.B.1952,Ap J,116,211
Kaluzny,J.1986,Acta Astronomica,36,121
Kazuo,K.2013,VSOLJ Variable Star Bulletin,55,1
Krajci,T.2006,Information Bulletin on Variable Stars,5690
Kriwattanawong,W.,Tasuya,O.,&Poojon,P.2016,New Astron.,44,12
Kwee,K.K.,&vanWoerden,H.1956,Bull.Astron.Inst.Netherlands,12,327
Lanza,A.F.,Rodono,M.,&Rosner,R.1998,MNRAS,296,893
Lanza,A.F.,&Rodon`o,M.1999,A&A,349,887
Lanza,A.F.,&Rodon`o,M.2002,Astronomische Nachrichten,323,424
Lee,J.W.,Kim,S.-L.,Lee,C.-U.,et al.2013,Ap J,763,74
Li,K.,Hu,S.,Guo,D.,et al.2015,New Astron.,41,17
Li,K.,Hu,S.-M.,Jiang,Y.-G.,Chen,X.,&Ren,D.-Y.2014,New Astron.,30,64
Liao,W.-P.,Qian,S.-B.,Zhao,E.-G.,&Jiang,L.-Q.2014,New Astron.,31,65
Liu,L.,Qian,S.-B.,He,J.-J.,Zhang,J.,&Li,L.-J.2009,Ap&SS,321,19
Lu,W.,Rucinski,S.M.,&Og?oza,W.2001,AJ,122,402
Lu,H.-p.,Michel,R.,Zhang,L.-y.,&Castro,A.2018,AJ,156,88
Lucy,L.B.1967,ZAp,65,89
Luo,A.-L.,Zhao,Y.-H.,Zhao,G.,et al.2015,RAA(Research in Astronomy and Astrophysics),15,1095
Ma,S.,Li,K.,Li,Q.-C.,&Gao,H.-Y.2018,New Astron.,59,1
Maceroni,C.,van Hamme,W.,&van’t Veer,F.1990,A&A,234,177
Marino,G.,Arena,C.,Bellia,I.,et al.2010,Information Bulletin on Variable Stars,5917
Mayer,P.1990,Bulletin of the Astronomical Institutes of Czechoslovakia,41,231
Milano,L.,Russo,G.,&Terzan,A.1987,A&A,183,265
Milone,E.F.,Hrivnak,B.J.,&Fisher,W.A.1985,AJ,90,354
Montes,D.,Fernandez-Figueroa,M.J.,de Castro,E.,&Cornide,M.1995,A&A,294,165
Nagai,K.1999,VSOLJ Variable Star Bulletin,33,1
Nagai,K.2001,VSOLJ Variable Star Bulletin,38,1
Nagai,K.2002,VSOLJ Variable Star Bulletin,39,1
Nagai,K.2003,VSOLJ Variable Star Bulletin,40,1
Nagai,K.2004,VSOLJ Variable Star Bulletin,42,1
Nagai,K.2005,VSOLJ Variable Star Bulletin,43,1
Nagai,K.2006,VSOLJ Variable Star Bulletin,44,1
Nagai,K.2007,VSOLJ Variable Star Bulletin,45,1
Nagai,K.2008a,VSOLJ Variable Star Bulletin,47,1
Nagai,K.2008b,VSOLJ Variable Star Bulletin,46,1
Nagai,K.2009,VSOLJ Variable Star Bulletin,48,1
Nagai,K.2010,VSOLJ Variable Star Bulletin,50,1
Nagai,K.2011,VSOLJ Variable Star Bulletin,51,1
Nagai,K.2012,VSOLJ Variable Star Bulletin,53,1
Nagai,K.2014,VSOLJ Variable Star Bulletin,56,1
Nagai,K.2015,VSOLJ Variable Star Bulletin,59,1
Nagai,K.2016,VSOLJ Variable Star Bulletin,61,1
Nagai,K.2017,VSOLJ Variable Star Bulletin,63,1
Nelson,R.H.2004,Information Bulletin on Variable Stars,5493
Noori,H.R.,&Abedi,A.2017,New Astron.,56,5
Ogloza,W.,Niewiadomski,W.,Barnacka,A.,et al.2008,Information Bulletin on Variable Stars,5843
Paschke,A.,&Brat,L.2006,Open European Journal on Variable Stars,23,13
Perryman,M.A.C.,Lindegren,L.,Kovalevsky,J.,et al.1997,A&A,323,L49
Pi,Q.-F.,Zhang,L.-Y.,Li,Z.-M.,&Zhang,X.-L.2014,AJ,147,50
Pi,Q.-F.,Zhang,L.-Y.,Bi,S.-L.,et al.2017,AJ,154,260
Poretti,E.1984,Information Bulletin on Variable Stars,2487
Poretti,E.1985,Information Bulletin on Variable Stars,2671
Press,W.H.,Teukolsky,S.A.,Vetterling,W.T.,&Flannery,B.P.1992,Numerical Recipes in FORTRAN,The Art of Scientific Computing,(Cambridge Univ.Press,2nd ed.)
Pribulla,T.,&Rucinski,S.M.2006,AJ,131,2986
Prˇsa,A.,&Zwitter,T.2005,Ap J,628,426
Qian,S.B.,Soonthornthum,B.,Xiang,F.Y.,Zhu,L.Y.,&He,J.J.2004,Astronomische Nachrichten,325,714
Qian,S.-B.,Liao,W.-P.,Liu,L.,et al.2008,New Astron.,13,98
Qian,S.-B.,He,J.-J.,Zhang,J.,et al.2017,RAA(Research in Astronomy and Astrophysics),17,087
Qu,Z.N.,Jiang,L.Q.,Liu,J.,et al.2017,New Astronomy,54,103
Rovithis-Livaniou,H.,Kranidiotis,A.N.,Rovithis,P.,&Athanassiades,G.2000,A&A,354,904
Ruciński,S.M.1969,Acta Astronomica,19,245
Rucinski,S.M.,&Duerbeck,H.W.2006,AJ,132,1539
Samec,R.G.1989,PASP,101,661
Samec,R.G.,&Bookmyer,B.B.1987,Information Bulletin on Variable Stars,2990
Samolyk,G.2009,Journal of the American Association of Variable Star Observers(JAAVSO),37,44
Senavci,H.V.,Tanriverdi,T.,Torun,E.,et al.2007,Information Bulletin on Variable Stars,5754
Singh,M.,&Chaubey,U.S.1986,Ap&SS,124,389
Skrutskie,M.F.,Cutri,R.M.,Stiening,R.,et al.2006,AJ,131,1163
Szalai,T.,Kiss,L.L.,Mészáros,S.,Vinkó,J.,&Csizmadia,S.2007,A&A,465,943
Watanabe,T.2000,VSOLJ Variable Star Bulletin,37,1
Watson,C.L.2006,Journal of the American Association of Variable Star Observers(JAAVSO),35,318
West,A.A.,Hawley,S.L.,Walkowicz,L.M.,et al.2004,AJ,128,426
Wilson,R.E.1979,Ap J,234,1054
Wilson,R.E.1990,Ap J,356,613
Wilson,R.E.1994,PASP,106,921
Wilson,R.E.,&Devinney,E.J.1971,Ap J,166,605
Wolff,S.C.,Wallerstein,G.,&Sandage,A.R.1965,PASP,77,370
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