Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Vievard, Sebastien"'
Autor:
Vievard, Sébastien, Lallement, Manon, Leon-Saval, Sergio, Guyon, Olivier, Jovanovic, Nemanja, Huby, Elsa, Lacour, Sylvestre, Lozi, Julien, Deo, Vincent, Ahn, Kyohoon, Lucas, Miles, Sallum, Steph, Norris, Barnaby, Betters, Chris, Amezcua-Correa, Rodrygo, Yerolatsitis, Stephanos, Fitzgerald, Michael, Lin, Jon, Kim, Yoo Jung, Gatkine, Pradip, Kotani, Takayuki, Tamura, Motohide, Currie, Thayne, Kenchington, Harry-Dean, Martin, Guillermo, Perrin, Guy
Photonic lanterns are waveguide devices enabling high throughput single mode spectroscopy and high angular resolution. We aim to present the first on-sky demonstration of a photonic lantern (PL) operating in visible light, to measure its throughput a
Externí odkaz:
http://arxiv.org/abs/2409.06958
Design, scientific goals, and performance of the SCExAO survey for planets around accelerating stars
Autor:
Morsy, Mona El, Currie, Thayne, Kuzuhara, Masayuki, Chilcote, Jeffrey, Guyon, Olivier, Tobin, Taylor L., Brandt, Timothy, An, Qier, Anh, Kyohoon, Bovie, Danielle, Deo, Vincent, Groff, Tyler, Gu, Ziying, Janson, Markus, Jovanovic, Nemanja, Li, Yiting, Lawson, Kellen, Lozi, Julien, Lucas, Miles, Marois, Christian, Murakami, Naoshi, Nielsen, Eric, Norris, Barnaby, Skaf, Nour, Tamura, Motohide, Thompson, William, Uyama, Taichi, Vievard, Sebastien
We describe the motivation, design, and early results for our 42-night, 125 star Subaru/SCExAO direct imaging survey for planets around accelerating stars. Unlike prior large surveys, ours focuses only on stars showing evidence for an astrometric acc
Externí odkaz:
http://arxiv.org/abs/2409.06773
Autor:
Deo, Vincent, Vievard, Sebastien, Lallement, Manon, Lucas, Miles, Huby, Elsa, Ahn, Kyohoon, Guyon, Olivier, Lozi, Julien, Kenchington-Goldsmith, Harry-Dean, Lacour, Sylvestre, Martin, Guillermo, Norris, Barnaby, Perrin, Guy, Singh, Garima, Tuthill, Peter
The petaling effect, induced by pupil fragmentation from the telescope spider, drastically affects the performance of high contrast instruments by inducing core splitting on the PSF. Differential piston/tip/tilt aberrations within each optically sepa
Externí odkaz:
http://arxiv.org/abs/2409.05246
Autor:
Lallement, Manon, Lacour, Sylvestre, Huby, Elsa, Martin, Guillermo, Barjot, Kevin, Perrin, Guy, Rouan, Daniel, Lapeyrere, Vincent, Vievard, Sebastien, Guyon, Olivier, Lozi, Julien, Deo, Vincent, Kotani, Takayuki, Pham, Cecil, Cassagnettes, Cedric, Billat, Adrien, Cvetojevic, Nick, Marchis, Franck
Publikováno v:
Proceeding SPIE Astronomical Telescopes + Instrumentation, Montreal, Quebec, Canada, Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121882F (2022)
Integrated optics are used to achieve astronomical interferometry inside robust and compact materials, improving the instruments stability and sensitivity. In order to perform differential phase measurements at the H$\alpha$ line (656.3 nm) with the
Externí odkaz:
http://arxiv.org/abs/2409.03808
Autor:
Lallement, Manon, Huby, Elsa, Lacour, Sylvestre, Martin, Guillermo, Barjot, Kevin, Perrin, Guy, Rouan, Daniel, Lapeyrere, Vincent, Vievard, Sebastien, Guyon, Olivier, Lozi, Julien, Deo, Vincent, Kotani, Takayuki, Pham, Cecil, Cassagnettes, Cedric, Billat, Adrien, Cvetojevic, Nick, Marchis, Franck
Publikováno v:
Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 9, Issue 2, 025003 (April 2023)
Integrated optics are used to achieve astronomical interferometry inside robust and compact materials, improving the instrument's stability and sensitivity. In order to perform differential phase measurements at the H$\alpha$ line (656.3 nm) with the
Externí odkaz:
http://arxiv.org/abs/2409.03476
Autor:
Morsy, Mona El, Currie, Thayne, Bovie, Danielle, Kuzuhara, Masayuki, Lacy, Brianna, Li, Yiting, Tobin, Taylor, Brandt, Timothy, Chilcote, Jeffrey, Guyon, Olivier, Groff, Tyler, Lozi, Julien, Vievard, Sebastien, Deo, Vincent, Skaf, Nour, Bouchy, Francois, Boisse, Isabelle, Dykes, Erica, Kasdin, N. J., Tamura, Motohide
We present follow-up SCExAO/CHARIS $H$ and $K$-band (R $\sim$ 70) high-contrast integral field spectroscopy and Keck/NIRC2 photometry of directly-imaged brown dwarf companion HD 33632 Ab and new radial-velocity data for the system from the SOPHIE spe
Externí odkaz:
http://arxiv.org/abs/2407.20322
Autor:
Lozi, Julien, Ahn, Kyohoon, Blue, Hannah, Chun, Alicia, Clergeon, Christophe, Deo, Vincent, Guyon, Olivier, Hattori, Takashi, Minowa, Yosuke, Nishiyama, Shogo, Ono, Yoshito, Oya, Shin, Takagi, Yuhei, Vievard, Sebastien, Vincent, Maria
The facility adaptive optics of the Subaru Telescope AO188 recently received some long-awaited upgrades: a new 3224-actuator deformable mirror (DM) from ALPAO (hence the name change to AO3000 or AO3k), an upgraded GPU-based real-time computer, a visi
Externí odkaz:
http://arxiv.org/abs/2407.19188
Autor:
Spalding, Eckhart, Arcadi, Elizabeth, Douglass, Glen, Gross, Simon, Guyon, Olivier, Martinod, Marc-Antoine, Norris, Barnaby, Rossini-Bryson, Stephanie, Taras, Adam, Tuthill, Peter, Ahn, Kyohoon, Deo, Vincent, Morsy, Mona El, Lozi, Julien, Vievard, Sebastien, Withford, Michael
GLINT is a nulling interferometer downstream of the SCExAO extreme-adaptive-optics system at the Subaru Telescope (Hawaii, USA), and is a pathfinder instrument for high-contrast imaging of circumstellar environments with photonic technologies. GLINT
Externí odkaz:
http://arxiv.org/abs/2407.17741
Autor:
Morsy, Mona El, Lozi, Julien, Guyon, Olivier, Currie, Thayne, Vievard, Sébastien, Bryant, Julia, Tokoku, Chihiro, Deo, Vincent, Ahn, Kyohoon, Crous, Fred, Wang, Adeline Haobing, Sathi, Zinat Mahol
Exo-NINJA will realize nearIR R$\sim$4000 diffraction-limited narrow-field spectro-imaging for characterization of exoplanets and circumstellar disk structures. It uniquely combines mid-R spectroscopy, high throughput, and spatial resolution, in cont
Externí odkaz:
http://arxiv.org/abs/2407.16746
Autor:
Vievard, Sébastien, Lallement, Manon, Leon-Saval, Sergio, Guyon, Olivier, Jovanovic, Nemanja, Huby, Elsa, Lacour, Sylvestre, Lozi, Julien, Deo, Vincent, Ahn, Kyohoon, Lucas, Miles, Currie, Thayne, Sallum, Steph, Fitzgerald, Michael P., Betters, Chris, Norris, Barnaby, Amezcua-Correa, Rodrigo, Yerolatsitis, Stephanos, Lin, Jon, Kim, Yoo-Jung, Gatkine, Pradip, Kotani, Takayuki, Tamura, Motohide, Martin, Guillermo, Goldsmith, Harry-Dean Kenchington, Perrin, Guy
A Photonic Lantern (PL) is a novel device that efficiently converts a multi-mode fiber into several single-mode fibers. When coupled with an extreme adaptive optics (ExAO) system and a spectrograph, PLs enable high throughput spectroscopy at high ang
Externí odkaz:
http://arxiv.org/abs/2407.15412