Summary
Rapid rotation effects can nowadays be directly measured by stellar interferometry. We present our recent high-quality interferometric data recorded with VLTI/VINCI on two rather different rapidly rotating stars: Achernar (B3Vpe star) and Altair (A7IV-V star). By using a first-order analysis (equivalent uniform disc model) we estimate the oblateness of these stars. For Altair, we also perform a comparison with observations from other modern interferometers (PTI and NPOI), finding a good agreement between the data from these 3 interferometers.
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Souza, A.D.d. (2007). Rapid Rotation across the HR Diagram with VLTI: Achernar and Altair. In: Richichi, A., Delplancke, F., Paresce, F., Chelli, A. (eds) The Power of Optical/IR Interferometry: Recent Scientific Results and 2nd Generation Instrumentation. Eso Astrophysics Symposia. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-74256-2_6
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DOI: https://doi.org/10.1007/978-3-540-74256-2_6
Publisher Name: Springer, Berlin, Heidelberg
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