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

Boccaletti, A. and Moutou, C. and Mouillet, D. and Lagrange, A.-M. and Augereau, J.-C. (2001) Dark-speckle coronagraphic detection of binary stars in the near-IR. Astronomy & Astrophysics, 367 (1). pp. 371-380. ISSN 0004-6361. doi:10.1051/0004-6361:20000342.

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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 m_K < 4 stars, which is about Δm_K ≈ 6-7 for angular separations ranging from 0.5" to 0.9".

Item Type:Article
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Boccaletti, A.0000-0001-9353-2724
Additional Information:© ESO 2001. (Received 13 June 2000 / Accepted 28 November 2000) We wish to thank the ESO-3.6 m team and especially F. Marchis for his efficient support during the allocated nights. We are also grateful to Antoine Labeyrie for helpful discussions and careful reading of the manuscript and to the referee for its constructive comments.
Subject Keywords:methods: data analysis -- techniques: interferometric -- instrumentation: adaptives optics -- binaries: close -- planetary systems
Issue or Number:1
Record Number:CaltechAUTHORS:20170408-141944750
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Official Citation:Dark-speckle coronagraphic detection of binary stars in the near-IR A. Boccaletti, C. Moutou, D. Mouillet, A.-M. Lagrange and J.-C. Augereau A&A, 367 1 (2001) 371-380 DOI:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75924
Deposited By: 1Science Import
Deposited On:20 Apr 2017 21:33
Last Modified:15 Nov 2021 16:56

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