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First Results from the CHARA Array. VII. Long‐Baseline Interferometric Measurements of Vega Consistent with a Pole‐On, Rapidly Rotating Star

  • Authors: J. P. Aufdenberg, A. Mérand, V. Coudé du Foresto, O. Absil, E. Di Folco, P. Kervella, S. T. Ridgway, D. H. Berger, T. A. ten Brummelaar, H. A. McAlister, J. Sturmann, L. Sturmann, and N. H. Turner

Aufdenberg et al. 2006 The Astrophysical Journal 645 664.

  • Provider: AAS Journals

Caption: Fig. 9.

Left: Comparison between the SED from Bohlin & Gilliland (2004; IUE and HST observations supplemented by a slowly rotating model spectrum both below 127.5 nm and longward of 420 nm) and two rapidly rotating models for Vega’s SED, one viewed from an inclination of 5° (nearly pole on) and one viewed from an inclination of 90° (equator on), from an integration of two intensity maps via eq. (24) for these inclinations. Right: Comparison of the best‐fit brightness distributions for Vega with inclinations of 5° (top) and 90° (bottom). For the equator‐on view, the poles appear 10% fainter than the pole‐on view due to limb darkening.

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