Abstract
SEVERAL transient X-ray sources with decay times of the order of weeks to months have been reported1; the discovery of four new sources of this type, A1118−61 (refs 2 and 3), A0535+26 (refs 4–6), A1742−28 (P. W. Sandford, personal communication), A1523−61 (ref. 7), in less than 1 yr of operation of the X-ray satellite Ariel V, indicates that these objects are rather common. Important for the understanding of this phenomenon is the optical identification of the sources: it has been proposed that, A1118−61 and A0535+26, coincide with bright B stars with emission lines (‘Be’ stars)8,9, while A0621−00 is identified with a completely different object, which showed a nova-like behaviour optically, simultaneous with the X-ray outburst10. Here we discuss X-ray emission from systems containing Be stars.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Tananbaum, H., and Tucker, W., in X-ray Astronomy (edit. by Giacconi, R., and Gursky, H.) (Reidel, 1974).
Eyles, C. J., Skinner, G. K., Willmore, A. P., and Rosenberg, F. D., Nature, 254, 577 (1975).
Eyles, J. C., Sandford, P. W., Burnell, S. J., Nature, 254, 580 (1975).
Ricketts, M. I., Turner, M. J. L., Page, C. G., and Pounds, K. A., Nature, 256, 631–633 (1975).
Coe, M. J., Carpenter, G. F., Engel, A. R., and Quenby, J. J., Nature, 256, 630–631 (1975).
Rosenberg, F. D., Eyles, C. J., Skinner, G. K., and Willmore, A. P., Nature, 256, 628–630 (1975).
Pounds, K. A., IAU Circ. No. 2729 (1974).
Chevalier, C., Ilovaisky, S. A., IAU Circ. No. 2778 (1975).
Liller, W., IAU Circ. No. 2728 (1975).
Boley, F., and Wolfson, R., IAU Circ. No. 2819 (1975).
Kriz, S., and Harmanec, P., Bull. astr. Insts. Csl., 26, 6 (1975).
van den Heuvel, E. P. J., Lectures at the Varenna School on the Physics and Astrophysics of Neutron Star sand Black Holes, 1975 (North Holland Publishing Company, Amsterdam 1975).
Illarionov, A. F., and Sunyaev, R. A., Astr. Astrophys., 39, 185 (1975).
Rappaport, S., and McClintock, J., IAU Circ. No. 2794 (1975).
Rogerson, J. B., Jr, and Lamers, H. J. G. L. M., Nature, 256, 190 (1975).
Whelan, J., and Wickramasinghe, D. T., Nature, 258, 502–503 (1975).
Hutchings, J. B., Cowley, A. P., Crampton, D., and Redman, R. O., Astrophys. J. Lett., 191, L101 (1975).
Osmer, P. S., Hiltner, W. A., and Whelan, J. A. A., Astrophys. J., 195, 705 (1975).
Garavoglia, M., thesis, University of Milan (1975).
Pounds, K. A., Cooke, B. A., Ricketts, M. J., Turner, M. J., and Elvis, M., Mon. Not. R. astr. Soc., 172, 473–481 (1975).
White, N. E., Mason, K.O., and Sanford, P.W., IAU Circ. No. 2855 (1975).
White, N. E., et al., IAU Circ. No. 2870 (1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
MARASCHI, L., TREVES, A. & VAN DEN HEUVEL, E. B-emission stars and X-ray sources. Nature 259, 292–293 (1976). https://doi.org/10.1038/259292a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/259292a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
