SIMBAD references

2001A&A...367..371B - Astronomy and Astrophysics, volume 367, 371-380 (2001/2-3)

Dark-speckle coronagraphic detection of binary stars in the near-IR.

BOCCALETTI A., MOUTOU C., MOUILLET D., LAGRANGE A.-M. and AUGEREAU J.-C.

Abstract (from CDS):

In this paper, we present the first attempt to obtain images of binary stars in the near IR using the dark-speckle method on the 3.6 m telescope at La Silla. Promising results are presented, despite the effect of the detector high read-out noise affecting the efficiency of speckle observations. We give some comparisons with the long exposure method. We derive in these data a reliable limit of detection for binary star companions, around mK<4 stars, which is about ΔmK≃6-7 for angular separations ranging from 0.5'' to 0.9''.

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Journal keyword(s): methods: data analysis - techniques: interferometric - instrumentation: adaptives optics - binaries: close - planetary systems

Simbad objects: 24

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