Performance of the VLT Planet Finder SPHERE I. Photometry and astrometry precision with IRDIS and IFS in laboratory

Abstract

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 the direct detection of planets, SPHERE, is composed of a polametric camera in visible light, the Zurich IMager POLarimeter (ZIMPOL), and two near-infrared sub-systems: the Infra-Red Dual-beam Imager and Spectrograph (IRDIS), a multi-purpose camera for imaging, polarimetry, and long-slit spectroscopy, and the integral field spectrograph (IFS), an integral field spectrograph. We present the results obtained from the analysis of data taken during the laboratory integration and validation phase, after the injection of synthetic planets. Since no continuous field rotation could be performed in the laboratory, this analysis presents results obtained using reduction techniques that do not use the angular differential imaging (ADI) technique. To perform the simulations, we used the instrumental point spread function (PSF) and model spectra of L and T-type objects scaled in contrast with respect to the host star. We evaluated the expected error in astrometry and photometry as a function of the signal to noise of companions, after spectral differential imaging (SDI) reduction for IRDIS and spectral deconvolution (SD) or principal component analysis (PCA) data reductions for IFS. We deduced from our analysis, for example, that $\beta$Picb, a 12~Myr old planet of $\sim$10~\MJ and semi-major axis of 9--10 AU, would be detected with IRDIS with a photometric error of 0.16~mag and with a relative astrometric position error of 1.1~mas. With IFS, we could retrieve a spectrum with error bars of about 0.15~mag on each channel and astrometric relative position error of 0.6~mas. For a fainter object such as HR8799d, a 13~\MJ planet at a distance of 27~AU, IRDIS could obtain a relative astrometric error of 3~mas.

arXiv comment13 pages, 10 figures, A&A accepted for pubblication

References in corpus (51)

• Direct Imaging of Multiple Planets Orbiting the Star HR 8799
• Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945
• Evolutionary models for very-low-mass stars and brown dwarfs with dusty atmospheres
• Angular Differential Imaging: a Powerful High-Contrast Imaging Technique
• Images of a fourth planet orbiting HR 8799
• Detection and Characterization of Exoplanets and Disks using Projections on Karhunen-Loeve Eigenimages
• The Gemini Planet Imager: First Light
• Defining and cataloging exoplanets: The exoplanet.eu database
• Evolutionary models for low-mass stars and brown dwarfs: uncertainties and limits at very young ages
• On the Luminosity of Young Jupiters
• A Unified Near Infrared Spectral Classification Scheme for T Dwarfs
• L and T Dwarf Models and the L to T Transition
• Spectral and Photometric Diagnostics of Giant Planet Formation Scenarios
• PynPoint: An Image Processing Package for Finding Exoplanets
• The 2MASS Wide-Field T Dwarf Search. III. Seven New T Dwarfs and Other Cool Dwarf Discoveries
• Photometric characterization of exoplanets using angular and spectral differential imaging
• Imaging Spectroscopy for Extrasolar Planet Detection
• Direct Imaging of a Cold Jovian Exoplanet in Orbit around the Sun-like Star GJ 504
• Synthetic Spectra and Colors of Young Giant Planet Atmospheres: Effects of Initial Conditions and Atmospheric Metallicity
• HST Spectral Mapping of L/T Transition Brown Dwarfs Reveals Cloud Thickness Variations
• Discovery of a probable 4-5 Jupiter-mass exoplanet to HD 95086 by direct-imaging
• The Gemini NICI Planet-Finding Campaign: The Frequency of Planets around Young Moving Group Stars
• A search for hot massive extrasolar planets around nearby young stars with the adaptive optics system NACO
• Discovery of 11 New T Dwarfs in the Two Micron All-Sky Survey, Including a Possible L/T Transition Binary
• The International Deep Planet Survey I. The frequency of wide-orbit massive planets around A-stars
• The Gemini NICI Planet-Finding Campaign: The Frequency of Giant Planets around Young B and A Stars
• A Statistical Analysis of SEEDS and Other High-Contrast Exoplanet Surveys: Massive Planets or Low-Mass Brown Dwarfs?
• Reconnaissance of the HR 8799 Exosolar System I: Near IR Spectroscopy
• A survey of young, nearby, and dusty stars to understand the formation of wide-orbit giant planets
• A Combined VLT and Gemini Study of the Atmosphere of the Directly-Imaged Planet, beta Pictoris b
• The near-infrared spectral energy distribution of β Pictoris b
• The VLT/NaCo large program to probe the occurrence of exoplanets and brown dwarfs at wide orbits: II- Survey description, results and performances
• Astrometry and Photometry with Coronagraphs
• The VLT/NaCo Large program to probe the occurrence of exoplanets and brown dwarfs in wide orbits: I- Sample definition and characterization
• Very high contrast IFU spectroscopy of AB Doradus C: 9 mag contrast at 0.2" without a coronagraph using spectral deconvolution
• Confidence Level and Sensitivity Limits in High Contrast Imaging
• The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems
• NICS-TNG low-resolution 0.85-2.45um spectra of L-Dwarfs: a near-infrared spectral classification scheme for faint dwarfs
• Accurate Astrometry and Photometry of Saturated and Coronagraphic Point Spread Functions
• LBT observations of the HR 8799 planetary system: First detection of HR8799e in H band
• Exoplanet characterization with long slit spectroscopy
• Speckle Suppression with the Project 1640 Integral Field Spectrograph
• Near-Infrared Detection and Characterization of the Exoplanet HD 95086 b with the Gemini Planet Imager
• Prototyping coronagraphs for exoplanet characterization with SPHERE
• Astrophysical false positives in direct imaging for exoplanets: a white dwarf close to a rejuvenated star
• A Search for L/T Transition Dwarfs With Pan-STARRS1 and WISE: Discovery of Seven Nearby Objects Including Two Candidate Spectroscopic Variables
• Young Jupiters are Faint: New Models of the Early Evolution of Giant Planets
• Search for cool giant exoplanets around young and nearby stars - VLT/NaCo near-infrared phase-coronagraphic and differential imaging
• Microlensing Events by Proxima Centauri in 2014 and 2016: Opportunities for Mass Determination and Possible Planet Detection
• The Optical Design of CHARIS: An Exoplanet IFS for the Subaru Telescope
• Simulation of planet detection with the SPHERE IFS

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• First light of the VLT planet finder SPHERE. III. New spectrophotometry and astrometry of the HR8799 exoplanetary system
• Performance of the VLT Planet Finder SPHERE II. Data analysis and Results for IFS in laboratory
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• The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system
• The Planetary Accretion Shock: I. Framework for Radiation-hydrodynamical Simulations and First Results
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• Signs of late infall and possible planet formation around DR Tau using VLT/SPHERE and LBTI/LMIRCam
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• TOI-179: a young system with a transiting compact Neptune-mass planet and a low-mass companion in outer orbit
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• Searching for the near infrared counterpart of Proxima c using multi-epoch high contrast SPHERE data at VLT
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• Analytical determination of orbital elements using Fourier analysis. II. Gaia astrometry and its combination with radial velocities
• Constraining masses and separations of unseen companions to five accelerating nearby stars
• Parallax and orbital effects in astrometric microlensing with binary sources
• Combining reference-star and angular differential imaging for high-contrast imaging of extended sources
• The White Dwarf Binary Pathways Survey III: contamination from hierarchical triples containing a white dwarf
• Investigating three Sirius-like systems with SPHERE
• Validation of strategies for coupling exoplanet PSFs into single-mode fibres for high-dispersion coronagraphy
• BEAST detection of a brown dwarf and a low-mass stellar companion around the young bright B star HIP 81208
• High Spatial Resolution Thermal-Infrared Spectroscopy with ALES: Resolved Spectra of the Benchmark Brown Dwarf Binary HD 130948BC
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• The first scattered light images of HD 112810, a faint debris disk in the Sco-Cen association
• Three new late-type stellar companions to very dusty WISE debris disks identified with VLT/SPHERE imaging
• Spectral analysis of two directly imaged benchmark L dwarf companions at the stellar-substellar boundary
• YSES 2b is a background star: Differential astrometric M-dwarf measurements in time
• The astrometric signal of microlensing events caused by free floating planets
• Constraining the mass of the planet(s) sculpting a disk cavity. The intriguing case of 2MASS J16042165-2130284