Search Results - "Martinache, F."

The Subaru Coronagraphic Extreme Adaptive Optics System: Enabling High-Contrast Imaging on Solar-System Scales by Jovanovic, N., Martinache, F., Guyon, O., Clergeon, C., Singh, G., Kudo, T., Garrel, V., Newman, K., Doughty, D., Lozi, J., Males, J., Minowa, Y., Hayano, Y., Takato, N., Morino, J., Kuhn, J., Serabyn, E., Norris, B., Tuthill, P., Schworer, G., Stewart, P., Close, L., Huby, E., Perrin, G., Lacour, S., Gauchet, L., Vievard, S., Murakami, N., Oshiyama, F., Baba, N., Matsuo, T., Nishikawa, J., Tamura, M., Lai, O., Marchis, F., Duchene, G., Kotani, T., Woillez, J.

“…The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is a multipurpose high-contrast imaging platform designed for the discovery and detailed…”
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Demonstration of an efficient, photonic-based astronomical spectrograph on an 8-m telescope by Jovanovic, N, Cvetojevic, N, Norris, B, Betters, C, Schwab, C, Lozi, J, Guyon, O, Gross, S, Martinache, F, Tuthill, P, Doughty, D, Minowa, Y, Takato, N, Lawrence, J

“…We demonstrate for the first time an efficient, photonic-based astronomical spectrograph on the 8-m Subaru Telescope. An extreme adaptive optics system is…”
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Modal noise in an integrated photonic lantern fed diffraction-limited spectrograph by Cvetojevic, N, Jovanovic, N, Gross, S, Norris, B, Spaleniak, I, Schwab, C, Withford, M J, Ireland, M, Tuthill, P, Guyon, O, Martinache, F, Lawrence, J S

“…In an attempt to develop a streamlined astrophotonic instrument, we demonstrate the realization of an all-photonic device capable of both multimode to single…”
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High-resolution survey for planetary companions to young stars in the Taurus molecular cloud by Wallace, A L, Kammerer, J, Ireland, M J, Federrath, C, Kraus, A L, Maddison, S T, Rizzuto, A, Birchall, E K, Martinache, F

“…ABSTRACT Direct imaging in the infrared at the diffraction limit of large telescopes is a unique probe of the properties of young planetary systems. We survey…”
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Dynamical Mass of GJ 802B: A Brown Dwarf in a Triple System by Ireland, M. J, Kraus, A, Martinache, F, Lloyd, J. P, Tuthill, P. G

“…We report a dynamical measurement of the mass of the brown dwarf GJ 802B using aperture-masking interferometry and astrometry. In addition, we report the…”
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On-sky Closed-loop Correction of Atmospheric Dispersion for High-contrast Coronagraphy and Astrometry by Pathak, P., Guyon, O., Jovanovic, N., Lozi, J., Martinache, F., Minowa, Y., Kudo, T., Kotani, T., Takami, H.

“…Adaptive optic (AO) systems delivering high levels of wavefront correction are now common at observatories. One of the main limitations to image quality after…”
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An H-band Vector Vortex Coronagraph for the Subaru Coronagraphic Extreme Adaptive Optics System by Kühn, J., Serabyn, E., Lozi, J., Jovanovic, N., Currie, T., Guyon, O., Kudo, T., Martinache, F., Liewer, K., Singh, G., Tamura, M., Mawet, D., Hagelberg, J., Defrere, D.

“…The vector vortex is a coronagraphic imaging mode of the recently commissioned Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) platform on the 8 m Subaru…”
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Mapping the Shores of the Brown Dwarf Desert. III. Young Moving Groups by Evans, T. M, Ireland, M. J, Kraus, A. L, Martinache, F, Stewart, P, Tuthill, P. G, Lacour, S, Carpenter, J. M, Hillenbrand, L. A

“…We present the results of an aperture-masking interferometry survey for substellar companions around 67 members of the young ({approx}8-200 Myr) nearby…”
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An Achromatic Focal Plane Mask for High-Performance Broadband Coronagraphy by Newman, K., Guyon, O., Balasubramanian, K., Belikov, R., Jovanovic, N., Martinache, F., Wilson, D.

“…Developments in coronagraph technology are close to achieving the technical requirements necessary to observe the faint signal of an Earth-like exoplanet in…”
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On-sky Closed-loop Correction of Atmospheric Dispersion for High-contrast Coronagraphy and Astrometry by Pathak, P., Guyon, O., Jovanovic, N., Lozi, J., Martinache, F., Minowa, Y., Kudo, T., Kotani, T., Takami, H.

“…Adaptive optic (AO) systems delivering high levels of wavefront correction are now common at observatories. One of the main limitations to image quality after…”
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Direct imaging with highly diluted apertures – I. Field-of-view limitations by Lardière, O., Martinache, F., Patru, F.

“…Future optical interferometric instrumentations mainly rely on the availability of an efficient cophasing system: once available, what has so far postponed the…”
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Two Wide Planetary-mass Companions to Solar-type Stars in Upper Scorpius by Ireland, M. J, Kraus, A, Martinache, F, Law, N, Hillenbrand, L. A

“…At wide separations, planetary-mass and brown dwarf companions to solar-type stars occupy a curious region of parameter space not obviously linked to binary…”
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An H-band Vector Vortex Coronagraph for the Subaru Coronagraphic Extreme Adaptive Optics System by Kühn, J., Serabyn, E., Lozi, J., Jovanovic, N., Currie, T., Guyon, O., Kudo, T., Martinache, F., Liewer, K., Singh, G., Tamura, M., Mawet, D., Hagelberg, J., Defrere, D.

“…The vector vortex is a coronagraphic imaging mode of the recently commissioned Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) platform on the 8 m Subaru…”
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Enhancing Stellar Spectroscopy with Extreme Adaptive Optics and Photonics by Jovanovic, N., Schwab, C., Cvetojevic, N., Guyon, O., Martinache, F.

“…Extreme adaptive optics (AO) systems are now in operation across the globe. These systems, capable of high order wavefront correction, deliver Strehl ratios of…”
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Enhancing Stellar Spectroscopy with Extreme Adaptive Optics and Photonics by Jovanovic, N., Schwab, C., Cvetojevic, N., Guyon, O., Martinache, F.

“…Extreme adaptive optics (AO) systems are now in operation across the globe. These systems, capable of high order wavefront correction, deliver Strehl ratios of…”
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A High-precision Technique to Correct for Residual Atmospheric Dispersion in High-contrast Imaging Systems by Pathak, P., Guyon, O., Jovanovic, N., Lozi, J., Martinache, F., Minowa, Y., Kudo, T., Takami, H., Hayano, Y., Narita, N.

“…Direct detection and spectroscopy of exoplanets requires high-contrast imaging. For habitable exoplanets in particular, located at a small angular separation…”
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A High-precision Technique to Correct for Residual Atmospheric Dispersion in High-contrast Imaging Systems by Pathak, P., Guyon, O., Jovanovic, N., Lozi, J., Martinache, F., Minowa, Y., Kudo, T., Takami, H., Hayano, Y., Narita, N.

“…Direct detection and spectroscopy of exoplanets requires high-contrast imaging. For habitable exoplanets in particular, located at a small angular separation…”
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Exoplanet Imaging with a Phase-induced Amplitude Apodization Coronagraph. I. Principle by Guyon, Olivier, Pluzhnik, Eugene A, Galicher, Raphael, Martinache, Frantz, Ridgway, Stephen T, Woodruff, Robert A

“…Using two aspheric mirrors, it is possible to apodize a telescope beam without losing light or angular resolution: the output beam is produced by "remapping"…”
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Spiral FFAG lattice design tools. Application to 6-D tracking in a proton-therapy class lattice by Fourrier, J., Martinache, F., Méot, F., Pasternak, J.

“…Methods have been developed, based on ray-tracing, for 3-D modelling of magnetic fields and particle motion in spiral scaling FFAG accelerators. They allow…”
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Direct Detection of the Brown Dwarf GJ 802B with Adaptive Optics Masking Interferometry by Lloyd, James P, Martinache, Frantz, Ireland, Michael J, Monnier, John D, Pravdo, Steven H, Shaklan, Stuart B, Tuthill, Peter G

“…We have used the Palomar 200" adaptive optics (AO) system to directly detect the astrometric brown dwarf GJ 802B reported by Pravdo et al. This observation is…”
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