Abstract
Soft X-ray emission from the ring nebula NGC6888, formed by the stellar wind of the central Wolf–Rayet star HD192163, has been found after thorough processing of Einstein observation data. A new class of X-ray sources, predicted some 20 years ago, has thus been discovered. The spectral shape agrees completely with theoretical predictions, but the emission flux is more than an order of magnitude less than the predictions.
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
Wendker, H. J., Smith, L. F., Israel, F. P., Habing, H. J. & Dickel, H. R. Astr. Astrophys. 42, 173–185 (1975).
Kwitter, K. B. Astrophys. J. 245, 154–162 (1981).
Lozinskaya, T. A. Astrophys. Space Sci. 87, 313–331 (1982).
Pikel'ner, S. B. & Shcheglov, P. V. Soviet Astr. 12, 757–764 (1968).
Shklovsky, I. S. Supernovae (Nauka, Moscow, 1976).
Lozinskaya, T. A. Supernovae and Stellar Winds: Interaction with the Interstellar Medium (Nauka, Moscow, 1986).
Castor, J., McCray, R. & Weaver, R. Astrophys. J. 200, L107–L110 (1975).
Weaver, R., McCray, R., Castor, J., Shapiro, P. & Moore, R. Astrophys. J. 218, 377–395 (1977).
Lozinskaya, T. A. Sov. Astr. Lett. 9, 247–249 (1983).
Moffat, A. F. J., Firmani, C., McLean, I. S. & Seggewiss, W. in IAU Symp. 99: WR Stars: Observations, Physics, Evolution (eds DeLoore, C. W. H. & Willis, A. J.) 577–581 (Reidel, Dordrecht, 1982).
Kähler, H., Ule, T. & Wendker, H. J. Astrophys. Space Sci. 135, 105–109 (1987).
Bochkarev, N. G. & Lozinskaya, T. A. Soviet Astr. 29, 60–65 (1985).
Einstein Observatory (HEAO-B): User's Manual. CFA/HEA 80–320 (1980).
Raymond, J. C. & Smith, B. W. Astrophys. J. Suppl. Ser. 35, 419–439 (1977).
Avni, Y. Astrophys. J. 210, 642–646 (1976).
Paresce, F. Astr. J. 89, 1022–1037 (1984).
Bochkarev, N. G. Astrophys. Space Sci. 138, 229–302 (1987).
Spitzer, L. Jr. Physical Processes in the Interstellar Medium (Wiley, New York, 1978).
Bochkarev, N. G. Soviet Astr. 29, 509–515 (1985).
Parker, R. A. R. Astrophys. J. 224, 873–884 (1978).
Rózycka, M. & Tenorio-Tangle, G. Astr. Astrophys. 147, 202–226 (1985).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bochkarev, N. X-ray emission from the ring nebula NGC6888. Nature 332, 518–520 (1988). https://doi.org/10.1038/332518a0
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1038/332518a0
This article is cited by
-
Structure of a ring nebula
Nature (1988)
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.
