Ms. Stephanie Renard Profile

Stephanie Renard

at Lab d'Astrophysique de l'Observatoire de Grenoble

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 2 August 2010 Paper

Image reconstruction in optical interferometry: applications to the inner regions of protoplanetary disks

S. Renard, F. Malbet, M. Benisty, E. Thiébaut, J.-P. Berger

Proceedings Volume 7734, 773418 (2010) https://doi.org/10.1117/12.856607

KEYWORDS: Image restoration, K band, Data modeling, Stars, Signal to noise ratio, Interferometry, Visibility, Reconstruction algorithms, Interferometers, Optical interferometry

Read Abstract +

Proceedings Article | 22 July 2010 Paper

Comparison between closure phase and phase referenced interferometric image reconstructions

Nuno Gomes, Paulo J. Garcia, Eric Thiébaut, Stéphanie Renard, Mercedes Filho

Proceedings Volume 7734, 773438 (2010) https://doi.org/10.1117/12.857146

KEYWORDS: Stars, Signal to noise ratio, Visibility, Image restoration, Interferometry, Reconstruction algorithms, Photometry, Data modeling, Phase interferometry, Image quality

Read Abstract +

Proceedings Article | 22 July 2010 Paper

The hydrogen emission of young stellar objects: key science for next-generation instruments and facilities

Paulo J. Garcia, Myriam Benisty, Samira Rajabi, Catherine Dougados, Fabrizzio Massi, Francesca Bacciotti, Jean-Baptiste Le Bouquin, Fabien Malbet, Linda Podio, Stephanie Renard, Emma Whelan

Proceedings Volume 7734, 773434 (2010) https://doi.org/10.1117/12.858302

KEYWORDS: Stars, Hydrogen, Spectroscopy, Interferometry, Magnetism, Neodymium, Visibility, Interferometers, Long baseline optical interferometry, Infrared radiation

Read Abstract +

Proceedings Article | 28 July 2008 Paper

Prospects for near-infrared characterisation of hot Jupiters with the VLTI Spectro-Imager (VSI)

S. Renard, O. Absil, J.-P. Berger, X. Bonfils, T. Forveille, F. Malbet

Proceedings Volume 7013, 70132Z (2008) https://doi.org/10.1117/12.790494

KEYWORDS: Planets, Stars, Exoplanets, K band, Telescopes, Jupiter, Phase measurement, Interferometry, Phase shifts, Spatial resolution

Read Abstract +

Proceedings Article | 28 July 2008 Paper

Imaging reconstruction for infrared interferometry: first images of YSOs environment

S. Renard, F. Malbet, E. Thiébaut, J.-P. Berger

Proceedings Volume 7013, 70131L (2008) https://doi.org/10.1117/12.787887

KEYWORDS: Interferometry, Image restoration, Visibility, Binary data, Stars, Interferometers, Infrared radiation, Reconstruction algorithms, Infrared imaging, Algorithm development

Read Abstract +

Proceedings Article | 28 July 2008 Paper

Science case for 1 mas spectro-imagining in the near-infrared

Paulo Garcia, Jean-Philippe Berger, Alessandro Marconi, Alexander Krivov, Andrea Chiavassa, Bernard Aringer, Brunella Nisini, Denis Defrére, Dimitri Mawet, Dieter Schertl, Eric Tatuli, Eric Thiébaut, Fabien Baron, Fabien Malbet, Gaspard Duchéne, Gerd Weigelt, Gilles Duvert, Gilles Henri, Hubert Klahr, Jean Surdej, Jean-Charles Augereau, Jean-François Claeskens, John Young, Josef Hron, Karine Perraut, Karl-Heinz Hofmann, Leonardo Testi, Margarida Cunha, Mercedes Filho, Michaël De Becker, Olivier Absil, Olivier Chesneau, Pierre Collette, Pierre-Olivier Petrucci, Ralph Neuhaeuser, Romano Corradi, Sónia Antón, Sebastian Wolf, Sebastian Hoenig, Stephanie Renard, Thierry Forveille, Thomas Beckert, Thomas Lebzelter, Tim Harries, Virginie Borkowski, Xavier Bonfils

Proceedings Volume 7013, 70134N (2008) https://doi.org/10.1117/12.789216

KEYWORDS: Stars, Telescopes, Spatial resolution, Planets, Galactic astronomy, Adaptive optics, Spectral resolution, Visibility, Interferometry, High dynamic range imaging

Read Abstract +

We present the work developed within the science team of the Very Large Telescope Interferometer Spectro-Imager (VSI) during the Phase A studies. VSI aims at delivering ~ 1 milliarcsecond resolution data cubes in the near-infrared, with several spectral resolutions up to 12 000, by combining up to 8 VLTI telescopes. In the design of an instrument, the science case plays a central role by supporting the instrument construction decision, defining the top-level requirements and balancing design options. The overall science philosophy of VSI was that of a general user instrument serving a broad community. The science team addressed themes which included several areas of astrophysics and illustrated specific modes of operation of the instrument: a) YSO disks and winds; b) Multiplicity of young stars; c) Exoplanets; d) Debris disks; e) Stellar surface imaging; f) The environments of evolved stars; g) AGN tori; h) AGN's Broad Line Region; i) Supermassive black-holes; and j) Microlensing. The main conclusions can be summarized as follows: a) The accessible targets and related science are extremely sensitive to the instrument limiting magnitude; the instrument should be optimized for sensitivity and have its own fringe tracker. b) Most of the science cases are readily achievable with on-axis fringe tracking, off-axis fringe tracking enabling extra science. c) In most targets (YSOs, evolved stars and AGNs), the interpretation and analysis of circumstellar/nuclear dust morphology requires direct access to the gas via spectral resolved studies of emission lines, requiring at least a spectral resolution of 2 500. d) To routinely deliver images at the required sensitivity, the number of telescopes in determinant, with 6 telescopes being favored. e) The factorial increase in the number of closure phases and visibilities, gained in a single observation, makes massive surveys of parameters and related science for the first time possible. f) High dynamic range imaging and very high dynamic range differential closure phase are possible allowing the study of debris disks and characterization of pegasides. g) Spectro-imaging in the near-infrared is highly complementary to ALMA, adaptive optics and interferometric imaging in the thermal infrared.

Showing 5 of 6 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years