Literature DB >> 17540860

Imaging the surface of Altair.

John D Monnier1, M Zhao, E Pedretti, N Thureau, M Ireland, P Muirhead, J-P Berger, R Millan-Gabet, G Van Belle, T Ten Brummelaar, H McAlister, S Ridgway, N Turner, L Sturmann, J Sturmann, D Berger.   

Abstract

Spatially resolving the surfaces of nearby stars promises to advance our knowledge of stellar physics. Using optical long-baseline interferometry, we constructed a near-infrared image of the rapidly rotating hot star Altair with a resolution of <1 milliarcsecond. The image clearly reveals the strong effect of gravity darkening on the highly distorted stellar photosphere. Standard models for a uniformly rotating star cannot explain our findings, which appear to result from differential rotation, alternative gravity-darkening laws, or both.

Entities:  

Year:  2007        PMID： 17540860     DOI： 10.1126/science.1143205

Source DB:  PubMed          Journal:  Science        ISSN： 0036-8075            Impact factor:   47.728


  4 in total

1.  Telescope arrays give fine view of stars.

Authors:  Eric Hand
Journal:  Nature       Date:  2010-04-08       Impact factor: 49.962

2.  Infrared images of the transiting disk in the epsilon Aurigae system.

Authors:  Brian Kloppenborg; Robert Stencel; John D Monnier; Gail Schaefer; Ming Zhao; Fabien Baron; Hal McAlister; Theo Ten Brummelaar; Xiao Che; Chris Farrington; Ettore Pedretti; P J Sallave-Goldfinger; Judit Sturmann; Laszlo Sturmann; Nathalie Thureau; Nils Turner; Sean M Carroll
Journal:  Nature       Date:  2010-04-08       Impact factor: 49.962

3.  No Sun-like dynamo on the active star ζ Andromedae from starspot asymmetry.

Authors:  R M Roettenbacher; J D Monnier; H Korhonen; A N Aarnio; F Baron; X Che; R O Harmon; Zs Kővári; S Kraus; G H Schaefer; G Torres; M Zhao; T A ten Brummelaar; J Sturmann; L Sturmann
Journal:  Nature       Date:  2016-05-04       Impact factor: 49.962

4.  Shape of a slowly rotating star measured by asteroseismology.

Authors:  Laurent Gizon; Takashi Sekii; Masao Takata; Donald W Kurtz; Hiromoto Shibahashi; Michael Bazot; Othman Benomar; Aaron C Birch; Katepalli R Sreenivasan
Journal:  Sci Adv       Date:  2016-11-16       Impact factor: 14.136
  4 in total

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