Browse > Article
http://dx.doi.org/10.5140/JASS.2005.22.2.113

LIGHT-TIME EFFECTS IN TWO ECLIPSING BINARIES V343 AQL AND CX AQR  

Kim, Chun-Hwey (Dept. od Astron. & Space Sci., College of National Science and Institute for Basic Science Research, Chungbuk National University)
Jeong, Jang-Hae (Dept. od Astron. & Space Sci., College of National Science and Institute for Basic Science Research, Chungbuk National University)
Lee, Yong-Sam (Dept. od Astron. & Space Sci., College of National Science and Institute for Basic Science Research, Chungbuk National University)
Publication Information
Journal of Astronomy and Space Sciences / v.22, no.2, 2005 , pp. 113-124 More about this Journal
Abstract
All times of minimum light for two eclipsing binaries V343 Aql and CX Aqr were collected and analyzed to study their orbital period variations. It was found that the orbital periods for both stars have varied in a cyclical way superposed on a parabola. A secular period decrease of $-261{\times}10^{-7}$ d/y for V343 Aql was calculated while CX Aqr showed a secular period increase of $+2.55{\times}10^{-8}$8 d/y. Possible causes of secular period variations for two systems were discussed. The cyclical period variation was interpreted as light-time effect due to a third body. The resultant period, semiamplitude and eccentricity of the light time orbit were calculated to be 30.3y, 0.0092d and 0.85, respectively, for V343 Aql and 33.0y, 0.0037d and 0.64, respectively, for CX Aqr. The properties of the third bodies suggested in V343 Aql and CX Aqr systems were discussed.
Keywords
eclipsing binary; V343 Aql; CX Aqr; period variation; light time effect; third-body;
Citations & Related Records
연도 인용수 순위
  • Reference
1 김천휘, 이재우, 이충욱, 이동주, 강영운 2002, 한국우주과학회지, 19, 47
2 이동주, 이충욱, 이재우, 김승리, 오규동, 김천휘 2004, 한국우주과학회, 21, 283
3 Beyer, M. 1937, AN, 263, 149
4 Borkovits, T., & Hegedus, T. 1996, A&AS, 120, 63   DOI   ScienceOn
5 Bradstreet, D. H., & Guinan, E. F. 1994, ASP Conference Series, ed. A. W. Shafter (San Francisco: ASP), 56, 228
6 Chambliss, C. R. 1992, PASP, 104,663   DOI
7 Huang, S. S. 1966, AnAp, 29, 331
8 Jensch, A. 1934, AN, 251, 327
9 Kim, C.-H. 1995, JA&SS, 12, 179
10 Kim, C.-H., Jeong, J. H., Demircan, O., Muyesserglu, Z., & Budding, E. 1997, AJ, 114, 2753   DOI   ScienceOn
11 Kim, C.-H., Lee, J. W., Kim, H.-I., Kyung, J.-M., & Koch, R. H. 2003, AJ, 126, 1555   DOI   ScienceOn
12 Kim, C.-H., Nha, I.-S., & Kreiner, J. M. 2005, AJ, 129, 990   DOI   ScienceOn
13 Koch, R. H., Plavec, M., & Wood, F. B. 1970, Catalogue of Graded Photometric Studies of Close Binaries (Philadelphia: Univ. of Pennsylvania Printing Office)
14 Kopal, Z. 1978, Dynamics of Close Binary Systems (London: Reidel), pp.322-323
15 Kreiner, J. M., Kim, C.-H., & Nha, I.-S. 2001, An Atlas of (O-C) Diagrams of Eclipsing Binary Stars (Krakow: Pedagogical Univ. Press), Part 1-6
16 Irwin, J. B. 1952, ApJ, 116, 11
17 Corporon, P., Lagrange, A.-M., & Beust, H. 1996, A&A, 282, L21
18 Refert, J. B. 1982, PASP, 94, 485   DOI
19 Selam, S. O., & Demircan, O. 2000, Variable Stars as Essential Astrophysical Tools, ed. C.lbanoglu (Netherlands: Kluwer), p.605
20 Taylor, P. H., & Alexander, R. S. 1940, U. Penn. Pub., 6, Pt.III, 26
21 Demircan, O. 2000, Variable Stars as Essential Astrophysical Tools, ed. C. Ibanoglu (Netherlands: Kluwer), p.615
22 Friboes-Conde, H., Herczeg, T., & Hog, E. 1973, A&A, 4, 78
23 Goecking, K. D., Duerbeck, H. W., Plewa, T., Kaluzny, J., Schertl, D., Weigelt, G., & Flin, P. 1994, A&A, 289, 827
24 Guinan, E. F., & Ribas, I. 2000, ApJ, 546, L43   DOI   ScienceOn
25 Harvin, J. A., Gies, D. R., & Penny, L. R. 2003, BAAS, 203.1211
26 Henry, T. J., Franz, O. Z., Wasserman, L. H., Benedict, G. F., Shelus, P. J., lanna, P. A., & McCarthy, Jr., D. W. 1999, ApJ, 512, 864   DOI   ScienceOn
27 Lorenz, R., Mayer, P., & Drechsel, H. 1998, A&A, 332, 909
28 Hoffmeister, C. 1934, AN, 251, 19
29 Irwin, J. B. 1959, AJ, 64, 149   DOI
30 Lee, J. W., Kim, C.-H., Han, W., Kim, H.-I., & Koch, R. H. 2004, MNRAS, 352, 1041   DOI   ScienceOn
31 Lu, W., Rucinski, S. M., & Ogloza, W. 2001, AJ, 122, 402   DOI   ScienceOn
32 Mayer, P. 1990, BAIC, 41, 231
33 McFarlane, T. M., Bell, S. A., Adamson, A. J., & Hilditch, R. W. 1986, MNRAS, 223, 607   DOI
34 Morgenroth, O. 1933, AN, 249, 385
35 Olivier, C. P. 1936, Popular Astronomy, 44, 257
36 Pringle, J. E. 1975, MNRAS, 170, 633   DOI
37 Press, W., Flannery, B. P., Teukolsky, S. A., & Vetterling, W. T. 1992, Numerical Recipes (Cam­bridge: Campridge Univ. Press), Chapter 14