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Session 22 - Binary Stars: New Generation Modeling Developments & Results.
Oral session, Tuesday, June 10
North Main Hall F/G,

[22.05] Radial Velocities Weighted with Line Strength

W. Van Hamme (Florida International U.), R. E. Wilson (U. Florida)

We describe the use of spectral line strength based weights in computing radial velocity proximity effects. Because absorption line equivalent widths depend on effective temperature, surface gravity, chemical composition and aspect angle, line strength varies across the surface of tidally distorted stars and ideally should be taken into account when calculating stellar disk-integrated radial velocities. We discuss the implementation of flux-based as well as equivalent width-based weights with examples.

Program listing for Tuesday