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An overview of the mid-infrared spectro-interferometer MATISSE: science, concept, and current status

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arxiv 1608.02350 v1 pith:HV34CCVZ submitted 2016-08-08 astro-ph.IM

An overview of the mid-infrared spectro-interferometer MATISSE: science, concept, and current status

A. Matter , B. Lopez , P. Antonelli , M. Lehmitz , F. Bettonvil , U. Beckmann , S. Lagarde , W. Jaffe
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R. G. Petrov P. Berio F. Millour S. Robbe-Dubois A. Glindemann P. Bristow M. Schoeller T. Lanz T. Henning G. Weigelt M. Heininger S. Morel P. Cruzalebes K. Meisenheimer R. Hofferbert S. Wolf Y. Bresson T. Agocs F. Allouche J.-C. Augereau G. Avila C. Bailet J. Behrend G. Van Belle J.-P. Berger R. van Boekel P. Bourget R. Brast J.-M. Clausse C. Connot R. Conzelmann G. Csepany W.C. Danchi M. Delbo C. Dominik A. van Duin E. Elswijk Y. Fantei G. Finger A. Gabasch F. Gont\'e U. Graser F. Guitton S. Guniat M. De Haan P. Haguenauer H. Hanenburg K.-H. Hofmann M. Hogerheijde R. ter Horst J. Hron C. Hummel J. Isderda D. Ives G. Jakob A. Jasko P. Jolley S. Kiraly J. Kragt T. Kroener G. Kroes S. Kuindersma L. Labadie W. Laun C. Leinert J.-L. Lizon C. Lucuix A. Marcotto F. Martinache G. Martinot-Lagarde N. Mauclert L. Mehrgan A. Meilland M. Mellein S. Menardi A. Merand U. Neumann E. Nussbaum S. Ottogalli R. Palsa J. Panduro E. Pantin I. Percheron T. Phan Duc J.-U. Pott E. Pozna R. Roelfsema G. Rupprecht D. Schertl C. Schmidt M. Schuil A. Spang J. stegmeier N. Tromp F. Vakili M. Vannier K. Wagner L. Venema J. Woillez
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keywords matissewillbandcurrentinstrumentmid-infraredvltiallow
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MATISSE is the second-generation mid-infrared spectrograph and imager for the Very Large Telescope Interferometer (VLTI) at Paranal. This new interferometric instrument will allow significant advances by opening new avenues in various fundamental research fields: studying the planet-forming region of disks around young stellar objects, understanding the surface structures and mass loss phenomena affecting evolved stars, and probing the environments of black holes in active galactic nuclei. As a first breakthrough, MATISSE will enlarge the spectral domain of current optical interferometers by offering the L and M bands in addition to the N band. This will open a wide wavelength domain, ranging from 2.8 to 13 um, exploring angular scales as small as 3 mas (L band) / 10 mas (N band). As a second breakthrough, MATISSE will allow mid-infrared imaging - closure-phase aperture-synthesis imaging - with up to four Unit Telescopes (UT) or Auxiliary Telescopes (AT) of the VLTI. Moreover, MATISSE will offer a spectral resolution range from R ~ 30 to R ~ 5000. Here, we present one of the main science objectives, the study of protoplanetary disks, that has driven the instrument design and motivated several VLTI upgrades (GRA4MAT and NAOMI). We introduce the physical concept of MATISSE including a description of the signal on the detectors and an evaluation of the expected performances. We also discuss the current status of the MATISSE instrument, which is entering its testing phase, and the foreseen schedule for the next two years that will lead to the first light at Paranal.

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