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Imaging of SN 1993J

Published online by Cambridge University Press:  19 September 2016

A. Alberdi  and
J.M. Marcaide
A. Alberdi
Affiliation:
IAA-CSIC, Apdo. Correos 3004, 18080 Granada, [email protected]
J.M. Marcaide
Affiliation:
Departamento de Astronomía, Universidad de Valencia, 46100 Burjassot, Spain

Summary

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SN 1993J has been imaged with VLBI, and its angular expansion monitored, for almost ten years. The images show shell-like radio structures with almost circular symmetry. SN 1993J expands according to models of shock excited emission. The angular expansion has a changing deceleration rate and is best modeled with two different slopes. The swept-up mass estimate at an age of 3159 days (∼0.4 M⊙), comparable to the low-mass envelope, favors a binary scenario. The observed spectral index of SN 1993J has slowly flattened since age 1000 days onward (α has changed from −1 to −0.67 at an age of 2820 days).

Type
Part I Supernovae: Individual
Information
International Astronomical Union Colloquium , Volume 192: Cosmic Explosions , 2005 , pp. 13 - 21
Copyright
Copyright © Springer-Verlag 2005

References

1. Bartel, N. et al.: Nature 368, 610 (1994)Google Scholar
2. Bartel, N. et al.: Science 287, 112 (2000)Google Scholar
3. Bartel, N. et al.: Astrophys. J. 581, 404 (2002)Google Scholar
4. Bietenholz, M.F., Bartel, N., Rupen, M.P.: Astrophys. J. 368, 610 (2003)Google Scholar
5. Chevalier, R.A.: Astrophys. J. 258, 790 (1982)Google Scholar
6. Chevalier, R.A.: Astrophys. J. 259, 302 (1982)Google Scholar
7. Fransson, C., Björnsson, C.I.: Astrophys. J. 509, 861 (1998)Google Scholar
8. Marcaide, J.M. et al.: IAUC 5785 (1993)Google Scholar
9. Marcaide, J.M. et al.: IAUC 5820 (1993)Google Scholar
10. Marcaide, J.M. et al.: Astrophys. J. Lett. 424, L25 (1994)Google Scholar
11. Marcaide, J.M. et al.: Nature 373, 44 (1995)Google Scholar
12. Marcaide, J.M. et al.: Science 270, 1475 (1995)Google Scholar
13. Marcaide, J.M. et al.: Astrophys. J. Lett. 486, L31 (1997)Google Scholar
14. Marcaide, J.M. et al.: In: This proceedingsGoogle Scholar
15. Pooley, G.G., Green, D.A.: IAUC 5751 (1993)Google Scholar
16. Mioduszewski, A.J., Dwarkadas, V.V., Ball, L.: Astrophys. J. 562, 869 (2001)Google Scholar
17. Pérez-Torres, M.A., Alberdi, A., Marcaide, J.M.: Astron. Astrophys. 374, 997 (2001)Google Scholar
18. Pérez-Torres, M.A., Alberdi, A., Marcaide, J.M.: Astron. Astrophys. 394, 71 (2002)Google Scholar
19. Rupen, M.P. et al.: In: Radio Emission from Galactic and Extragalactic Compact Sources - IAU Coll. 64, ed. by Zensus, J.A., Taylor, G.B., Wrobel, J.M. (ASP Conf. Series, Vol. 144, 1998) pp. 353–354 Google Scholar
20. Van Dyk, S.D. et al.: Astrophys. J. Lett. 432, L115 (1994)CrossRefGoogle Scholar
21. Wheeler, J.C. et al.: Astrophys. J. Lett. 417, L71 (1993)Google Scholar
22. Weiler, K.W., Sramek, R.A., van Dyk, S.D., Panagia, N.: IAUC 5752 (1993)Google Scholar