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Stellar X-Ray Activity in the Hyades

  • Robert A. Stern (a1) and Marie-Christine Zolcinski (a2)

Extract

Observations of the Hyades cluster with the Einstein Observatory and with IUE have uncovered a high level of coronal x-ray emission (Lx≃1029 era s-1 for solar-type stars) and similarly high fluxes of chromospheric and transition region line fluxes compared to the gun (Stern et al.1981, Zolcinski et al. 1981, 1982). A giant x-ray flare from a spectroscopic binary system in the Hyades has also been reported (Stern, Antiochos and Underwood 1982).

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Copyright

References

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Pallavicini, R., Golub, L., Rosner, R., Vaiana, G.S., Ayres, T., and Linsky, J.L., Ap. J. 248, 279 (1981).
Stern, R.A., Antiochos, S.K., and Underwood, J.H., Ap. J. (Letters), submitted (1982).
Stern, R.A., Zolcinski, M.C., Antiochos, S.K., and Underwood, J.H., Ap. J. 249, 647 (1981).
Vaiana, G.S., et al., Ap. J. 245, 163 (1981).
Zolcinski, M.C, Antiochos, S.K., Stern, R.A., and Walker, A.B.C., Ap. J. in press (1981).
Zolcinski, M.C, Kay, L., Antiochos, S., Stern, R., and Walker, A.B.C., 1982, to be published in the procedings of the symposium. “Advances in Ultraviolet Astronomy: Four Years of IUE Research”, held at NASA Goddard Space Flight Center, March 30 – April 1, 1982.

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