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High Resolution Coronographic Imaging of AG Carinae

  • Antonella Nota
  • Francesco Paresce
Part of the Astrophysics and Space Science Library book series (ASSL, volume 157)

Abstract

We present the first high resolution observations of the ring nebula around the galactic LBV AG Car obtained through broad band B, V, R, I filters with the STScI coronograph on the ESO 2.2 m. telescope. Highly anisotropic continuum emission in all these bands is clearly detected, in the shape of a bipolar structure elongated along the NE- SW direction extending from a few arcsecs from the star out to ≤ 15 arcsecs corresponding to a projected linear distance of ≤ 0.5 parsecs, with a surface brightness in the range 17.9–19.4 mag/arcsec2. Its essentially neutral color with respect to the star (Δ(V-I) = -0.07) suggests that the observed radiation is starlight scattered by dust grains of diameter > 1/μ.

Keywords

Narrow Band Image Central Star Companion Star High Resolution Observation Narrow Versus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Antonella Nota
    • 1
  • Francesco Paresce
    • 1
    • 2
  1. 1.Space Telescope Science InstituteBaltimoreUSA
  2. 2.Astrophysics Division, Space Science DepartmentESAItaly

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