Seeing the Surfaces of Stars

@article{Quirrenbach2007SeeingTS,
  title={Seeing the Surfaces of Stars},
  author={Andreas Quirrenbach},
  journal={Science},
  year={2007},
  volume={317},
  pages={325 - 326}
}
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References

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Constraints on the Geometry of Circumstellar Envelopes: Optical Interferometric and Spectropolarimetric Observations of Seven Be Stars
We have obtained contemporaneous optical interferometry and spectropolarimetry of seven Be stars. The interferometry was done using both continuum and narrow Ha line -lters to observe the circumstel-…
First AMBER/VLTI Science
The AMBER instrument installed at the Very Large Telescope (VLT) combines the beams from three telescopes to produce spectrally dispersed interference fringes with milli-arcsecond angular scales in…
Vega is a rapidly rotating star
TLDR
Optical interferometric observations show that Vega has the asymmetric brightness distribution of the bright, slightly offset polar axis of a star rotating at 93 per cent of its breakup speed, which leads to the prediction of an excess of near-infrared emission compared to the visible, in agreement with observations.
First Results from the CHARA Array. VII. Long-Baseline Interferometric Measurements of Vega Consistent with a Pole-On, Rapidly Rotating Star
We have obtained high-precision interferometric measurements of Vega with the CHARA Array and FLUOR beam combiner in the K’ band at projected baselines between 103m and 273m. The measured visibility…
Imaging the Surface of Altair
TLDR
Using optical long-baseline interferometry, a near-infrared image of the rapidly rotating hot star Altair is constructed with a resolution of <1 milliarcsecond that clearly reveals the strong effect of gravity darkening on the highly distorted stellar photosphere.
On the Structure and Properties of Differentially Rotating, Main-Sequence Stars in the 1-2 M☉ Range
We present models for chemically homogeneous, differentially rotating, main-sequence stars with masses in the range 1-2 M☉. The models were constructed using a code based on a reformulation of the…