Abstract
We report here the results of a one-year monitoring programme of SS433 at IR and visual wavelengths. The most striking feature of these observations is the near constancy of the IR colours while the source's flux varies over a range of ∼1.2 mag. There is no evidence for the 13.1-day period first reported in radial-velocity measurements by Crampton et al.1. However, it seems possible that an 11.8-day period is present.
Similar content being viewed by others
References
Crampton, D., Cowley, A. P. & Hutchings, J. B. Astrophys. J. Lett. 235, L131 (1980).
Clark, D. H. & Murdin, P. Nature 276, 44 (1978).
Margon, B. et al. Astrophys. J. Lett. 230, L41 (1979).
Liebert, J., Angel, J. R. P., Hege, E. K., Martin, P. G. & Blair, W. P. Nature 279, 384 (1979).
Margon, B., Ford, H. C., Grandi, S. A. Stone, R. P. S. Astrophys. J. Lett. 233, L63 (1979).
Fabian, A. C. & Rees, M. J. Mon. Not. R. astr. Soc. 187, 13P (1979).
Abell, G. O. & Margon, B. Nature 279, 701 (1979).
Murdin, P., Clark, D. H. & Martin, P. G. RGO Preprint (1980).
Margon, B. in Galactic X-ray Sources (Proc.Nato Summer School, in the press).
Clark, D. H., Green, A. J. & Caswell, J. L. Austr. J. Phys. Astrophys. Suppl. 37, 75 (1975).
Gottlieb, E. W. & Liller, W. IAU Circ. No. 3354 (1979).
McGraw, J., Starrfield, S., Angel, R. & Carleton, N. IAU Circ. No. 3363 (1979).
Leibowitz, E. M., Mazeh, T. & Sternberg, A. IAU Circ. No. 3414 (1979).
Glass, I. S. IAU Circ. No. 3363 (1979).
Margon, B., Grandi, S. A. & Downes, R. A. UCLA Preprint No.85 (1980).
Liller, W. et al. Bull. Am. astr. Soc. 11, 732 (1979).
Impey, C. D. IAU Circ. No. 3379 (1979).
Wynn-Williams, C. G. & Becklin, E. E. Nature 282, 810 (1979).
Giles, A. B., King, A. R., Cooke, B. A., McHardy, I. M. & Lawrence, A. Nature 281, 282 (1979).
Allen, D. A. Nature 281, 284 (1979).
Bopp, B. W., Evans, D. S., Laing, J. D. & Deeming, T. J. Mon. Not. R. astr. Soc. 147, 355 (1970).
Giles, A. B. IAU Circ. No. 3419 (1979).
Kemp, J. C., Barbour, M. S., Arbabi, M., Leibowitz, E. M. & Mazeh, T. Astrophys. J. Lett. 238, L26 (1980).
Gladyshev, S. A., Kurochkin, N. E., Novikov, I. D. & Cherepashchuk, A. M. Astr. Circ. No. 1086 (1979).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Giles, A., King, A., Jameson, R. et al. The IR variability of SS433. Nature 286, 689–691 (1980). https://doi.org/10.1038/286689a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/286689a0
- Springer Nature Limited
This article is cited by
-
Nutational effects in SS 433
Astrophysics and Space Science (1984)
-
IR variability of SS433
Nature (1981)