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| Paper: |
Determination of Be-star Inclinations from Gravity-Darkened Photospheric Spectra |
| Volume: |
361, Active OB-Stars: Laboratories For Stellar and Circumstellar Physics |
| Page: |
518 |
| Authors: |
Vinicius, M.-M.F.; Townsend, R.H.D.; Leister, N.V. |
| Abstract: |
In this paper, we report on our ongoing effort to develop unified models for seven Helium photospheric absorption profiles of 5 early-type Be stars: α Eri (HD10144 - B3Vpe), η Cen (HD127972 - B1.5Vne), ε Cap (HD205637 - B3V:p), α Ara (HD158427 - B2Vne), and λ Pav (HD173948 - B1.5IIIe). We are using a spectral synthesis code developed by one of us (RHDT) that includes effects due to rapid rotation. In each star, we find that a simultaneous fit of all He lines can be achieved only with a pole-to-equator effective temperature gradient consistent with von Zeipel gravity darkening. This inhomogeneous temperature distribution implies the fit procedure is also sensitive to the inclination (i ) of the stellar rotation axis. |
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