Optical photometry of the eclipsing Large Magellanic Cloud supersoft source CAL 87

C. Alcock, R. A. Allsman, D. R. Alves, T. S. Axelrod, D. P. Bennett, P. A. Charles, K. H. Cook, D. O'Donoghue, K. C. Freeman, K. Griest, J. Guern, M. J. Lehner, M. Livio, S. L. Marshall, D. Minniti, B. A. Peterson, M. R. Pratt, P. J. Quinn, A. W. Rodgers, K. A. SouthwellC. W. Stubbs, W. Sutherland, D. L. Welch

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

10 Citas (Scopus)


We present optical photometry of the eclipsing supersoft source CAL 87. These observations comprise long-term data accumulated as a by-product of the MACHO Project, and high-speed, white-light photometry of a single eclipse. We (i) derive an improved ephemeris of T0=HJD 245 0111.5144(3) + 0.44267714(6)E for the time of minimum light, (ii) find the eclipse structure to be stable over a period of ∼4 yr, and (iii) investigate the colour variation as a function of orbital phase. The resolution afforded by the high-speed nature of the white-light observations enables us to see new structure in the light-curve morphology.

Idioma originalInglés
Páginas (desde-hasta)699-704
Número de páginas6
PublicaciónMonthly Notices of the Royal Astronomical Society
EstadoPublicada - 1997

Áreas temáticas de ASJC Scopus

  • Astronomía y astrofísica
  • Ciencias planetarias y espacial


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