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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. 8.

(a) Comparison between the SED of Bohlin & Gilliland (2004) and our best‐fitting (﹩\chi ^{2}_{\nu }=8.7﹩) rapidly rotating SED model for Vega: ﹩\omega =0.91﹩, ﹩T^{\mathrm{pole}\,}_{\mathrm{eff}\,}=10,150﹩ K, and ﹩\mathrm{log}\,( g) _{\mathrm{pole}\,}=4.10﹩. Also shown are the differences between this model and the data in (b) the region at shorter wavelengths observed by the IUE and (c) the region observed by the HST Space Telescope Imaging Spectrograph at longer wavelengths. At wavenumbers ﹩1/ \lambda < 2.38﹩ μm−1 the "observed" SED is represented by a closely fitting Kurucz model spectrum (see Bohlin & Gilliland 2004).

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