References

ASTRA Proceedings

ASTRA Proc.

2199-3963

Copernicus Publications

Göttingen, Germany

10.5194/ap-1-43-2014

Lyman-α observations of astrospheres

Linsky

J. L.

https://orcid.org/0000-0003-4446-3181

¹ Wood

B. E.

JILA, University of Colorado and NIST, Boulder, CO, USA

US Naval Research Laboratory, Washington, D.C., USA

25 08 2014

1 43 49

2014

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Charge-exchange reactions between outflowing stellar wind protons and interstellar neutral hydrogen atoms entering a stellar astrosphere produce a region of piled-up-decelerated neutral hydrogen called the hydrogen wall. Absorption by this gas, which is observed in stellar Lyman-α emission lines, provides the only viable technique at this time for measuring the mass-loss rates of F–M dwarf stars. We describe this technique, present an alternative way for understanding the relation of mass-loss rate with X-ray emission, and identify several critical issues.

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