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Xavier Gnata
Researcher at Airbus Defence and Space
Publications - 22
Citations - 323
Xavier Gnata is an academic researcher from Airbus Defence and Space. The author has contributed to research in topics: James Webb Space Telescope & Spectrograph. The author has an hindex of 8, co-authored 18 publications receiving 191 citations.
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Journal ArticleDOI
The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope. I. Overview of the instrument and its capabilities
Peter Viggo Jakobsen,Pierre Ferruit,C. Alves de Oliveira,Santiago Arribas,Georgio Bagnasco,Reiner Barho,T. L. Beck,Stephan M. Birkmann,T. Böker,A. J. Bunker,Stephane Charlot,P. de Jong,G. De Marchi,Ralf Ehrenwinkler,Massimo Falcolini,R. Fels,Franx,David Franz,Mary Funke,Giovanna Giardino,Xavier Gnata,Wolfgang Holota,Karl Honnen,P. L. Jensen,Matthias Jentsch,Johnson,Delphine Jollet,Hermann Karl,Günther Kling,Jess Köhler,Manfred Kolm,N. Kumari,Michelle E. Lander,Robert Lemke,Nora Lützgendorf,Roberto Maiolino,Elena Manjavacas,A. P. Marston,Marc Maschmann,Ralf Maurer,Messerschmidt,Samuel H. Moseley,Peter Mosner,D. B. Mott,James Muzerolle,Nor Pirzkal,Jacques Pittet,A. Plitzke,Posselt,Bob Rapp,Bernard J. Rauscher,T. D. Rawle,Hans-Walter Rix,Ana Paula P. Rödel,Peter Rumler,Elena Sabbi,Jean-Christophe Salvignol,Schmid,Marco Sirianni,C.T. Smith,P. Strada,Maurice te Plate,JoAnn M. Valenti,Thomas Wettemann,Thorsten Wiehe,M. Wiesmayer,Chris J. Willott,Raymond H. Wright,Peter Zeidler,C. Zincke +69 more
TL;DR: In this article , the authors provide an overview of the design and capabilities of the near-infrared spectrograph (NIRSpec) onboard the James Webb Space Telescope (JWST).
Proceedings ArticleDOI
The JWST near-infrared spectrograph NIRSpec: status
Pierre Ferruit,Giorgio Bagnasco,Reiner Barho,Stephan M. Birkmann,Torsten Böker,Guido De Marchi,Bernhard Dorner,Ralf Ehrenwinkler,Massimo Falcolini,Giovanna Giardino,Xavier Gnata,Karl Honnen,Peter Viggo Jakobsen,Peter Jensen,Manfred Kolm,Hans-Ulrich Maier,Ralf Maurer,Markus Melf,Peter Mosner,Peter Rumler,Jean-Christophe Salvignol,Marco Sirianni,Paolo Strada,Maurice te Plate,Thomas Wettemann +24 more
TL;DR: The Near Infrared Spectrograph NIRSpec (NIRSpec) is one of the four instruments of the James Webb Space Telescope (JWST) and is capable of obtaining spectra of more than 100 objects simultaneously in its multi-object spectroscopy (MOS) mode as discussed by the authors.
Journal ArticleDOI
A model-based approach to the spatial and spectral calibration of NIRSpec onboard JWST
Bernhard Dorner,Giovanna Giardino,Pierre Ferruit,C. Alves de Oliveira,Stephan M. Birkmann,Torsten Böker,G. De Marchi,Xavier Gnata,Jess Köhler,Marco Sirianni,Peter Viggo Jakobsen +10 more
TL;DR: In this article, a model of NIRSpec optical geometry was used to estimate the spatial and spectral position of the input spectra with high fidelity, and the intrinsic accuracy (1-sigma, rms) of the model, as measured from the extracted calibration spectra, was better than 1/10 of a pixel along the spatial direction.
Journal ArticleDOI
A model-based approach to the spatial and spectral calibration of NIRSpec onboard JWST
Bernhard Dorner,Giovanna Giardino,Pierre Ferruit,Catarina Alves de Oliveira,Stephan M. Birkmann,Torsten Böker,Guido De Marchi,Xavier Gnata,Jess Köhler,Marco Sirianni,Peter Viggo Jakobsen +10 more
TL;DR: In this paper, a model of NIRSpec optical geometry is used to estimate the spatial and spectral position of the input spectra with high fidelity, and the intrinsic accuracy (1-sigma, RMS) as measured from the extracted calibration spectra is better than 1/10 of a pixel along the spatial direction.
Proceedings ArticleDOI
Status of the JWST/NIRSpec instrument
Stephan M. Birkmann,Pierre Ferruit,Catarina Alves de Oliveira,Torsten Böker,Guido De Marchi,Giovanna Giardino,Marco Sirianni,Martin Stuhlinger,Peter Jensen,Peter Rumler,Massimo Falcolini,Maurice te Plate,Giovanni Cresci,Bernhard Dorner,Ralf Ehrenwinkler,Xavier Gnata,Thomas Wettemann +16 more
TL;DR: The Near-Infrared Spectrograph (NIRSpec) is one of the four instruments on the James Webb Space Telescope (JWST), scheduled for launch in 2018 as mentioned in this paper.