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astro-ph2007★ 7 cited
First Observation of Planet-Induced X-ray Emission: The System HD 179949
S. H. Saar, M. Cuntz, V. L. Kashyap +1
We present the first observation of planet-induced stellar X-ray activity, identified for the HD 179949 system, using Chandra / ACIS-S. The HD 179949 system consists of a close-in…
astro-ph2007★ 141 cited
The Orbital Period of the Wolf-Rayet Binary IC 10 X-1; Dynamic Evidence that the Compact Object is a Black Hole
A. H. Prestwich, R. Kilgard, P. A. Crowther +6
IC 10 X-1 is a bright (Lx=10^38 ergs/s) variable X-ray source in the local group starburst galaxy IC 10. The most plausible optical counterpart is a luminous Wolf-Rayet star, makin…
astro-ph2007★ 7 cited
Exoplanet-Induced Chromospheric Activity: Realistic Light Curves from Solar-type Magnetic Fields
Steven R. Cranmer, Steven H. Saar
There is growing observational evidence for some kind of interaction between stars and close-in extrasolar giant planets. Shkolnik et al. reported variability in the chromospheric…