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| Paper: |
Fundamental properties and mass loss in hot, near-main sequence stars |
| Volume: |
7, Properties of Hot Luminous Stars: Boulder-Munich Workshop |
| Page: |
160 |
| Authors: |
Grigsby, James A. |
| Abstract: |
Spectra of 28 O9-B2 near-main sequence stars have been obtained. Effective temperatures, surface gravities, and v sin i's were constrained in the stars by comparing selected lines of H, He I, and Mg II with a grid of models calculated with a non-LTE, line-blanketed code. Mass loss is characterized by a parameter describing the asymmetry of the C IV (1548, 1550A) doublet. Roughly half the program stars show evidence of mass loss. The degree of asymmetry of the C IV doublet shows a monotonic increase with T(eff); a correlation with luminosity is also seen. |
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