Abstract
THE system known as Cygnus X-3 has been extensively studied at radio wavelengths (where it exhibits extraordinary variability1–3), in X rays (where it exhibits a 4.8 h period4–6), and in the infrared at 1.6 and 2.2 µm (where it also displays a 4.8 h period as well as large flares7,8). Attempts have also been made to detect Cyg X-3 in visual and near infrared wavelengths9,10. Here we present the results of a series of observations made at near infrared wavelengths, λeffective ≃0.85 µm on ten nights in July and August 1973.
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Gregory, P. C., Kronberg, P. P., Seaquist, E. R., Hughes, V. A., Woodsworth, A., Viner, M. R., and Retablack, D., Nature, 239, 440 (1972).
Hjellming, R. M., and Barlick, B., Nature, 239, 443 (1972).
Gregory, P. C., Kronberg, P. P., Seaquist, E. R., Hughes, V. A., Woodsworth, A., Viner, M. R., Retablack, D., Hjellming, R. M., and Ballick, B., Nature phys. Sci., 239, 114 (1972).
Parsignault, D. R., Gusky, H., Kellogg, E. M., Matilsky, T., Murray, S., Schreier, E., Tananbaum, H., and Giacconi, R., Nature phys. Sci., 239, 123 (1972).
Sanford, P. W., and Hawkins, F. H., Nature phys. Sci., 239, 135 (1972).
Canizares, C. R., McClintock, J. E., Clark, G. W., Lewin, W. H. G., Schnopper, H. W., and Sprott, G. F., Nature phys. Sci., 241, 28 (1973).
Breklin, E. E., Kristian, J., Neugebauer, G., and Wynn-Williams, C. G., Nature phys. Sci., 239, 130 (1972).
Becklin, E. E., Hawkins, F. J., Mason, K. O., Matthews, K., Neugebauer, G., Sanford, P. W., and Wynn-Williams, C. G., Nature, 245, 302 (1973).
Westphal, J. A., Kristian, J., Huchra, J. P., Shectman, S. A., and Bracato, R. J., Nature phys. Sci., 239, 134 (1972).
Gaustad, J. E., and Margon, B., Mon. Not. R. astr. Soc., 161, 15P (1973).
Sandage, A., Astrophys. J., 162, 841 (1970).
Johnson, H. L., A. Rev. Astr. Astrophys., 4, 193 (1966).
Marsh, A., Purton, C. R., and Feldman, P. A., Proc. High Energy Astrophysics Division of the AAS Meeting at Tucson (December 1973).
Johnson, H. L., in Stars and Stellar Systems (Interstellar Extinction) (edit. by Middlehurst, B. M., and Aller, L. A.) 7, 167 (University of Chicago Press, 1968).
Becklin, E. E., and Neugebauer, G., Astrophys. J., 151, 145 (1968).
Lee, T. A., Astrophys. J., 162, 217 (1970).
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BAHCALL, J., BAHCALL, N. Near Infrared Observations of Cygnus X-3. Nature 247, 446–447 (1974). https://doi.org/10.1038/247446a0
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DOI: https://doi.org/10.1038/247446a0
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