PIONIER: a 4-telescope visitor instrument at VLTI

被引：238

作者：

Le Bouquin, J. -B. ^{[1
]}

Berger, J. -P. ^{[2
]}

Lazareff, B. ^{[1
]}

Zins, G. ^{[1
]}

Haguenauer, P. ^{[2
]}

Jocou, L. ^{[1
]}

Kern, P. ^{[1
]}

Millan-Gabet, R. ^{[3
]}

Traub, W. ^{[4
]}

Absil, O. ^{[6
]}

Augereau, J. -C. ^{[1
]}

Benisty, M. ^{[5
]}

Blind, N. ^{[1
]}

Bonfils, X. ^{[1
]}

Bourget, P. ^{[2
]}

Delboulbe, A. ^{[1
]}

Feautrier, P. ^{[1
]}

Germain, M. ^{[1
]}

Gitton, P. ^{[2
]}

Gillier, D. ^{[1
]}

Kiekebusch, M. ^{[7
]}

Kluska, J. ^{[1
]}

Knudstrup, J. ^{[7
]}

Labeye, P. ^{[8
]}

Lizon, J. -L. ^{[7
]}

Monin, J. -L. ^{[1
]}

Magnard, Y. ^{[1
]}

Malbet, F. ^{[1
]}

Maurel, D. ^{[1
]}

Menard, F. ^{[1
]}

Micallef, M. ^{[1
]}

Michaud, L. ^{[1
]}

Montagnier, G. ^{[2
]}

Morel, S. ^{[2
]}

Moulin, T. ^{[1
]}

Perraut, K. ^{[1
]}

Popovic, D. ^{[7
]}

Rabou, P. ^{[1
]}

Rochat, S. ^{[1
]}

Rojas, C. ^{[2
]}

Roussel, F. ^{[1
]}

Roux, A. ^{[1
]}

Stadler, E. ^{[1
]}

Stefl, S. ^{[2
]}

Tatulli, E. ^{[1
]}

Ventura, N. ^{[1
]}

机构：

[1] UJF Grenoble 1, CNRS, INSU, IPAG,UMR 5274, Grenoble, France

[2] European Org Astron Res So Hemisphere ESO, Santiago 19, Chile

[3] CALTECH, NASA Exoplanet Sci Inst NExScI, Pasadena, CA 91125 USA

[4] CALTECH, Jet Prop Lab, Pasadena, CA USA

[5] Max Planck Inst Astron, D-69117 Heidelberg, Germany

[6] Univ Liege, Inst Astrophys & Geophys, B-4000 Liege, Belgium

[7] European Org Astron Res So Hemisphere ESO, D-85748 Garching, Germany

[8] CEA, LETI, F-38054 Grenoble 9, France

来源：

ASTRONOMY & ASTROPHYSICS | 2011年 / 535卷

关键词：

instrumentation: interferometers; techniques: interferometric; techniques: high angular resolution; instrumentation: high angular resolution; INFRARED INTERFEROMETRIC SURVEY; OPTICS BEAM COMBINER; INTEGRATED-OPTICS; ASTRONOMICAL INTERFEROMETRY; CALIBRATOR STARS; HOT DUST; T-TAURI; DISK; PRECISION; CATALOG;

D O I：

10.1051/0004-6361/201117586

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Context. PIONIER stands for Precision Integrated-Optics Near-infrared Imaging ExpeRiment. It combines four 1.8m Auxilliary Telescopes or four 8m Unit Telescopes of the Very Large Telescope Interferometer (ESO, Chile) using an integrated optics combiner. The instrument was integrated at IPAG in December 2009 and commissioned at the Paranal Observatory in October 2010. It has provided scientific observations since November 2010. Aims. In this paper, we explain the instrumental concept and describe the standard operational modes and the data reduction strategy. We present the typical performance and discuss how to improve them. Methods. This paper is based on laboratory data obtained during the integrations at IPAG, as well as on-sky data gathered during the commissioning at VLTI. We illustrate the imaging capability of PIONIER on the binaries delta Sco and HIP11231. Results. PIONIER provides six visibilities and three independent closure phases in the H band, either in a broadband mode or with a low spectral dispersion (R = 40), using natural light (i.e. unpolarized). The limiting magnitude is Hmag = 7 in dispersed mode under median atmospheric conditions (seeing <1 '', tau(0) > 3ms) with the 1.8m Auxiliary Telescopes. We demonstrate a precision of 0.5 deg on the closure phases. The precision on the calibrated visibilities ranges from 3% to 15% depending on the atmospheric conditions. Conclusions. PIONIER was installed and successfully tested as a visitor instrument for the VLTI. It permits high angular resolution imaging studies at an unprecedented level of sensitivity. The successful combination of the four 8m Unit Telescopes in March 2011 demonstrates that VLTI is ready for four-telescope operation.

引用

页数：14

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