SPHERE: the exoplanet imager for the Very Large Telescope

  title={SPHERE: the exoplanet imager for the Very Large Telescope},
  author={J. Beuzit and A. Vigan and D. Mouillet and K. Dohlen and R. Gratton and A. Boccaletti and J. Sauvage and H. Schmid and M. Langlois and C. Petit and A. Baruffolo and M. Feldt and J. Milli and Z. Wahhaj and L. Abe and U. Anselmi and J. Antichi and R. Barette and J. Baudrand and P. Baudoz and A. Bazzon and P. Bernardi and P. Blanchard and R. Brast and P. Bruno and T. Buey and M. Carbillet and M. Carle and E. Cascone and F. Chapron and G. Chauvin and J. Charton and R. Claudi and A. Costille and V. D. Caprio and A. Delboulb'e and S. Desidera and C. Dominik and M. Downing and O. Dupuis and C. Fabron and D. Fantinel and G. Farisato and P. Feautrier and E. Fedrigo and T. Fusco and P. Gigan and C. Ginski and J. Girard and E. Giro and D. Gisler and L. Gluck and C. Gry and T. Henning and N. Hubin and E. Hugot and S. Incorvaia and M. Jaquet and M. Kasper and E. Lagadec and A. Lagrange and H. Coroller and D. Mignant and B. Ruyet and G. Lessio and J. Lizon and M. Llored and L. Lundin and F. Madec and Y. Magnard and M. Marteaud and P. Martinez and D. Maurel and F. M'enard and D. Mesa and O. Moller-Nilsson and T. Moulin and C. Moutou and A. Orign'e and J. Parisot and A. Pavlov and D. Perret and J. Pragt and P. Puget and P. Rabou and J. Ramos and J. Reess and F. Rigal and S. Rochat and R. Roelfsema and G. Rousset and A. Roux and M. Saisse and B. Salasnich and E. Santambrogio and S. Scuderi and D. S{\'e}gransan and A. Sevin and R. Siebenmorgen and C. Soenke and E. Stadler and M. Su{\'a}rez and D. Tiph{\`e}ne and M. Turatto and S. Udry and F. Vakili and L. Waters and L. Weber and F. Wildi and G. Zins and A. Zurlo},
  journal={Astronomy and Astrophysics},
Observations of circumstellar environments that look for the direct signal of exoplanets and the scattered light from disks have significant instrumental implications. In the past 15 years, major developments in adaptive optics, coronagraphy, optical manufacturing, wavefront sensing, and data processing, together with a consistent global system analysis have brought about a new generation of high-contrast imagers and spectrographs on large ground-based telescopes with much better performance… Expand
Calibration of residual aberrations in exoplanet imagers with large numbers of degrees of freedom
Imaging faint objects, such as exoplanets or disks, around nearby stars is extremely challenging because host star images are dominated by the telescope diffraction pattern. Using a coronagraph is anExpand
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The two main advantages of exoplanet imaging are the discovery of objects in the outer part of stellar systems -- constraining models of planet formation --, and its ability to spectrallyExpand
Lessons learned from SPHERE for the astrometric strategy of the next generation of exoplanet imaging instruments
Measuring the orbits of directly-imaged exoplanets requires precise astrometry at the milliarcsec level over long periods of time due to their wide separation to the stars (&10 au) and long orbitalExpand
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We describe the current performance of the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument on the Subaru telescope on Maunakea, Hawaii and present early science results for SCExAOExpand
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Direct exoplanet spectroscopy aims to measure the spectrum of an exoplanet while simultaneously minimizing the light collected from its host star. Isolating the planet light from the starlightExpand
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We present recent results obtained with the VLT/MUSE Integral Field Spectrograph fed by the 4LGSF and its laser tomography adaptive optics module GALACSI. While this so-called narrow-field mode ofExpand
The polarimetric imaging mode of VLT/SPHERE/IRDIS II: Characterization and correction of instrumental polarization effects.
Context. Circumstellar disks and self-luminous giant exoplanets or companion brown dwarfs can be characterized through direct-imaging polarimetry at near-infrared wavelengths. SPHERE/IRDIS at theExpand
Orbiting Starshade : Observing Exoplanets at visible wavelengths with GMT, TMT, and ELT
An orbiting starshade working with 30-m class ground-based telescopes would enable observations of reflected light from exoplanets at visible wavelengths. Molecular oxygen and water on an exo-EarthExpand
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It is demonstrated here that investments in 'exoplanet interferometry' could open up new possibilities for speckle suppression through spatial coherence, a giant boost in astrometric precision for determining exoplanet orbits, ability to take a census of young giant exoplanets (clusters <50 Myr age), and an unrivaled potential for infrared nulling from space to detect terrestrial planets and search for atmospheric biomarkers. Expand
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Context. The direct imaging of rocky exoplanets is one of the major science goals for upcoming large telescopes. The contrast requirement for imaging such planets is challenging. However, the mid-IRExpand


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The new planet finder for the Very Large Telescope (VLT), the Spectro-Polarimetric High-contrast Exoplanet REsearch (SPHERE), just had its first light in Paranal. A dedicated instrument for theExpand
First light of the Gemini Planet Imager
Observations ofBeta Pictoris clearly detect the planet, Beta Pictoris b, in a single 60-s exposure with minimal postprocessing, and fitting the Keplerian orbit of Beta Pic b using the new position together with previous astrometry gives a factor of 3 improvement in most parameters over previous solutions. Expand
High-contrast imaging of Sirius A with VLT/SPHERE: looking for giant planets down to one astronomical unit
Sirius has always attracted a lot of scientific interest, especially after the discovery of a companion white dwarf at the end of the 19th century. Very early on, the existence of a potential thirdExpand
Observing Exoplanets with High Dispersion Coronagraphy. I. The scientific potential of current and next-generation large ground and space telescopes
Direct imaging of exoplanets presents a formidable technical challenge owing to the small angular separation and high contrast between exoplanets and their host stars. High Dispersion CoronagraphyExpand
SAXO: the extreme adaptive optics system of SPHERE (I) system overview and global laboratory performance
Abstract. The direct imaging of exoplanet is a leading field of today’s astronomy. The photons coming from the planet carry precious information on the chemical composition of its atmosphere. TheExpand
Exoplanet characterization with long slit spectroscopy
Extrasolar planets observation and characterization by high contrast imaging instruments is set to be a very important subject in observational astronomy. Dedicated instruments are being developed toExpand
High-order adaptive optics requirements for direct detection of extrasolar planets: Application to the SPHERE instrument.
A feasibility study is proposed for an extreme AO system in the frame of the SPHERE (Spectro-Polarimetry High-contrast Exoplanet Research) instrument, which is currently under design and should equip one of the four VLT 8-m telescopes in 2010. Expand
The VAMPIRES instrument: imaging the innermost regions of protoplanetary discs with polarimetric interferometry
Direct imaging of protoplanetary disks promises to provide key insight into the complex sequence of processes by which planets are formed. However imaging the innermost region of such disks (a zoneExpand
Uncrowding R 136 from VLT-SPHERE extreme adaptive optics
This paper presents the sharpest near-IR images of the massive cluster R136 to date, based on the extreme adaptive optics of the SPHERE focal instrument implemented on the ESO/VLT and operated in itsExpand
Architectural design of the control software for the SPHERE Planet Finder VLT instrument
SPHERE (Spectro-Polarimetric High-contrast Exoplanet REsearch) is a second generation instrument for the VLT, currently under design, whose prime objective is the discovery and study of newExpand