Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-23T19:44:34.754Z Has data issue: false hasContentIssue false
  • English
  • Français

New distance and depth estimates from observations of eclipsing binaries in the SMC

Published online by Cambridge University Press:  01 July 2008

Pierre L. North ,
Romain Gauderon  and
Frédéric Royer
Pierre L. North
Affiliation:
École Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland email: pierre.north@epfl.ch
Romain Gauderon
Affiliation:
École Polytechnique Fédérale de Lausanne (EPFL), Observatoire de Sauverny, CH-1290 Versoix, Switzerland email: pierre.north@epfl.ch
Frédéric Royer
Affiliation:
GEPI, Observatoire de Paris – Section de Meudon, 5, place Jules Jansen, F-92195 Meudon Cedex, France email: Frdric.Royer@obspm.fr
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

A sample of 33 eclipsing binaries observed in a field of the SMC with FLAMES@VLT is presented. The radial velocity curves obtained, together with existing OGLE light curves, allowed the determination of all stellar and orbital parameters of these binary systems. The mean distance modulus of the observed part of the SMC is 19.05 mag, based on the 26 most reliable systems. Assuming an average error of 0.1 mag on the distance modulus to an individual system, and a gaussian distribution of the distance moduli, we obtain a 2-σ depth of 0.36 mag or 10.6 kpc. Some results on the kinematics of the binary stars and of the H ii gas are also given.

Keywords

binaries: eclipsingstars: distancesstars: evolutionstars: fundamental parametersstars: kinematicsgalaxies: distances and redshiftsgalaxies: kinematics and dynamicsgalaxies: individual (SMC)Magellanic Cloudsdistance scale
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S256: The Magellanic System: Stars, Gas, and Galaxies , July 2008 , pp. 57 - 62
Copyright
Copyright © International Astronomical Union 2009

References

Andersen, J. 1991, A&AR, 3, 91Google Scholar
Andersen, J., Clausen, J. V., & Nordtsröm, B. 1980, in Plavec, M. J., Popper, D. M., & Ulrich, R. K. (eds.), Close binary stars: observations and interpretation, IAU Conf.Proc. 88, (Dordrecht: Reidel), p. 81CrossRefGoogle Scholar
Bonanos, A. Z., Stanek, K. Z., Kudritzki, R. P., et al. 2006, ApJ, 652, 313CrossRefGoogle Scholar
Clausen, J. V. 2004, New Astron., 48, 679CrossRefGoogle Scholar
De Mink, S. E., Pols, O. R., & Hilditch, R. W. 2007, A&A, 467, 1181Google Scholar
Fitzpatrick, E. L. 1985, ApJS, 59, 77CrossRefGoogle Scholar
Fitzpatrick, E. L., Ribas, I., Guinan, E. F., et al. 2002, ApJ, 564, 260CrossRefGoogle Scholar
Fitzpatrick, E. L., Ribas, I., Guinan, E. F., Maloney, F. P., & Claret, A. 2003, ApJ, 587, 685CrossRefGoogle Scholar
González, J. F., Ostrov, P., Morrell, N., & Minniti, D. 2005, ApJ, 624, 946CrossRefGoogle Scholar
Guinan, E. F. 2004, New Astron., 48, 647CrossRefGoogle Scholar
Guinan, E. F., Fitzpatrick, E. L., DeWarf, L. E., et al. 1998, ApJ, 509, L21CrossRefGoogle Scholar
Guinan, E. F., Engle, S. G., & Devinney, E. J. 2007, in Demircan, O., Selam, S.O., & Albayrak, B. (eds.), Solar and Stellar Physics Through Eclipses, ASP-CS, 370, 125Google Scholar
Hadrava, P. 1995, A&AS, 114, 393Google Scholar
Hadrava, P. 2004, Publ. Astron. Inst. ASCR, 92, 15Google Scholar
Harries, T. J., Hilditch, R. W., & Howarth, I. D. 2003, MNRAS, 339, 157CrossRefGoogle Scholar
Hensberge, H. H. & Pavlovski, K. 2007, in Hartkopf, W. I., Guinan, E. F., & Harmanec, P. (eds.), Binary stars as critical tools & tests in contemporary astrophysics, IAU Conf.Proc. 240, (Cambridge: CUP), p. 136Google Scholar
Hensberge, H., Pavlovski, K., & Verschueren, W. 2000, A&A, 358, 553Google Scholar
Hilditch, R. W., Howarth, I. D., & Harries, T. J. 2005, MNRAS, 357, 304 (HHH05)CrossRefGoogle Scholar
Lucy, L. B. 2006, A&A, 457, 629Google Scholar
Paczyński, B. 2001, AcA, 51, 81Google Scholar
Pavlovski, K. & Hensberge, H. H. 2005, A&A, 439, 309Google Scholar
Pinsonneault, M. H. & Stanek, K. Z. 2006, ApJ, 639, L67CrossRefGoogle Scholar
Prša, A., 2006, PHOEBE Scientific Reference, Univ. of Ljubljana, available in electronic form at http://phoebe.fiz.uni-lj.si/Google Scholar
Prša, A. & Zwitter, T. 2005, ApJ, 628, 426CrossRefGoogle Scholar
Ribas, I., Guinan, E. F., Fitzpatrick, E. L., et al. 2000b, ApJ, 528, 692CrossRefGoogle Scholar
Ribas, I., Jordi, C., Torra, J., & Giménez, A. 2000a, MNRAS, 313, 99CrossRefGoogle Scholar
Ribas, I., Fitzpatrick, E. L., Maloney, F. P., Guinan, E. F., & Udalski, A. 2002, ApJ, 574, 771CrossRefGoogle Scholar
Ribas, I., Jordi, C., Vilardell, F., Fitzpatrick, E. L., Hilditch, R. W., & Guinan, E. F. 2005, ApJ, 635, 37CrossRefGoogle Scholar
Stanimirović, S., Staveley-Smith, L., & Jones, P. A. 2004, ApJ, 604, 176CrossRefGoogle Scholar
Simon, K. P. & Sturm, E. 1994, A&A, 281, 286Google Scholar
Torres, G. & Carranza, G. J. 1987, MNRAS, 226, 513CrossRefGoogle Scholar
Van Hamme, W., 1993, AJ, 106, 2096CrossRefGoogle Scholar
Van Rensbergen, W., De Loore, C., & Vanbeveren, D. 2005, in Interacting Binaries: Accretion, Evolution, and Outcomes, AIP-CP, 797, 301CrossRefGoogle Scholar
Van Rensbergen, W., De Loore, C., & Jansen, K. 2006, A&A, 446, 1071Google Scholar
Wilson, R. E. & Devinney, E. J. 1971, ApJ, 166, 605CrossRefGoogle Scholar
Wilson, R. E. 1979, ApJ, 234, 1054CrossRefGoogle Scholar
Wilson, R. E. 1990, ApJ, 356, 613CrossRefGoogle Scholar
Wilson, R. E. & Biermannn, P. 1976, A&A, 48, 349Google Scholar
Wyrzykowski, Ł., Udalski, A., Kubiak, M., et al. 2004, AcA, 54, 1Google Scholar