Zobrazeno 1 - 10
of 4 922
pro vyhledávání: '"Fitzgerald Michael"'
Autor:
Hsu, Chih-Chun, Wang, Jason J., Blake, Geoffrey A., Xuan, Jerry W., Zhang, Yapeng, Ruffio, Jean-Baptiste, Horstman, Katelyn, Cronin, Julianne, Sappey, Ben, Xin, Yinzi, Finnerty, Luke, Echeverri, Daniel, Mawet, Dimitri, Jovanovic, Nemanja, Ó, Clarissa R. Do, Baker, Ashley, Bartos, Randall, Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Gregory W., Fitzgerald, Michael P., Liberman, Joshua, López, Ronald A., Morris, Evan, Pezzato-Rovner, Jacklyn, Schofield, Tobias, Skemer, Andrew, Wallace, J. Kent, Wang, Ji
The $\sim$5 Myr PDS 70 is the only known system with protoplanets residing in the cavity of the circumstellar disk from which they formed, ideal for studying exoplanet formation and evolution within its natal environment. Here we report the first spi
Externí odkaz:
http://arxiv.org/abs/2411.15117
Autor:
Lin, Jonathan, Fitzgerald, Michael P.
We present several nonlinear wavefront sensing techniques for few-mode sensors, all of which are empirically calibrated and agnostic to the choice of wavefront sensor. The first class of techniques involves a straightforward extension of the linear p
Externí odkaz:
http://arxiv.org/abs/2411.08115
Autor:
Lewis, Briley, Li, Yiting, Gibbs, Aidan, Fitzgerald, Michael P., Brandt, Timothy, Gagliuffi, Daniella Bardalez, An, Qier, Chen, Minghan, Bowens-Rubin, Rachel, Salama, Maissa, Lozi, Julien, Jensen-Clem, Rebecca, Mazin, Ben
Brown dwarfs with measured dynamical masses and spectra from direct imaging are benchmarks that anchor substellar atmosphere cooling and evolution models. We present Subaru SCExAO/CHARIS infrared spectroscopy of HIP 93398 B, a brown dwarf companion r
Externí odkaz:
http://arxiv.org/abs/2411.06003
Autor:
Kim, Yoo Jung, Fitzgerald, Michael P., Lin, Jonathan, Lozi, Julien, Vievard, Sébastien, Xin, Yinzi, Levinstein, Daniel, Jovanovic, Nemanja, Leon-Saval, Sergio, Betters, Christopher, Guyon, Olivier, Norris, Barnaby, Sallum, Steph
Spectroastrometry, which measures wavelength-dependent shifts in the center of light, is well-suited for studying objects whose morphology changes with wavelength at very high angular resolutions. Photonic lantern (PL)-fed spectrometers have potentia
Externí odkaz:
http://arxiv.org/abs/2411.02501
Autor:
Wiley, James, Brown, Aaron, Kupke, Renate, Cosens, Maren, Wright, Shelley A., Maire, Jerome, Magnone, Kenneth, Kress, Evan, Wang, Eric, Johnson, Chris, Larkin, James E., Fitzgerald, Michael P., Kassis, Marc, Jones, Tucker
Publikováno v:
Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130967B (18 July 2024)
Liger is an adaptive optics (AO) fed imager and integral field spectrograph (IFS) designed to take advantage of the Keck All-sky Precision Adaptive-optics (KAPA) upgrade to the Keck I telescope. Liger adapts the design of the InfraRed Imaging Spectro
Externí odkaz:
http://arxiv.org/abs/2409.16263
Autor:
Kim, Yoo Jung, Fitzgerald, Michael P., Lin, Jonathan, Xin, Yinzi, Levinstein, Daniel, Sallum, Steph, Jovanovic, Nemanja, Leon-Saval, Sergio
We investigate the potential of photonic lantern (PL) fiber fed spectrometers for two-dimensional spectroastrometry. Spectroastrometry, a technique for studying small angular scales by measuring centroid shifts as a function of wavelength, is typical
Externí odkaz:
http://arxiv.org/abs/2409.09120
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
Publikováno v:
A&A 691, A140 (2024)
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
Autor:
Horstman, Katelyn, Ruffio, Jean-Baptiste, Batygin, Konstantin, Mawet, Dimitri, Baker, Ashley, Hsu, Chih-Chun, Wang, Jason J., Wang, Ji, Blunt, Sarah, Xuan, Jerry W., Xin, Yinzi, Liberman, Joshua, Agrawal, Shubh, Konopacky, Quinn M., Blake, Geoffrey A., O, Clarissa R. Do, Bartos, Randall, Bond, Charlotte Z., Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Greg, Echeverri, Daniel, Finnerty, Luke, Fitzgerald, Michael P., Jovanovic, Nemanja, Lopez, Ronald, Martin, Emily C., Morris, Evan, Pezzato, Jacklyn, Ruane, Garreth, Sappey, Ben, Schofield, Tobias, Skemer, Andrew, Venenciano, Taylor, Wallace, J. Kent, Wallack, Nicole L., Wizinowich, Peter
GQ Lup B is one of the few substellar companions with a detected cicumplanetary disk, or CPD. Observations of the CPD suggest the presence of a cavity, possibly formed by an exo-satellite. Using the Keck Planet Imager and Characterizer (KPIC), a high
Externí odkaz:
http://arxiv.org/abs/2408.10299
Autor:
Horstman, Katelyn A., Ruffio, Jean-Baptiste, Wang, Jason J., Hsu, Chih-Chun, Baker, Ashley, Finnerty, Luke, Xuan, Jerry, Echeverri, Daniel, Mawet, Dimitri, Blake, Geoffrey A., Bartos, Randall, Bond, Charlotte Z., Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Greg, Fitzgerald, Michael P., Jovanovic, Nemanja, Lopez, Ronald, Martin, Emily C., Morris, Evan, Pezzato, Jacklyn, Ruane, Garreth, Sappey, Ben, Schofield, Tobias, Skemer, Andrew, Venenciano, Taylor, Wallace, J. Kent, Wang, Ji, Wizinowich, Peter
Publikováno v:
Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130962E (18 July 2024)
The Keck Planet Imager and Characterizer (KPIC) combines high contrast imaging with high resolution spectroscopy (R$\sim$35,000 in K band) to study directly imaged exoplanets and brown dwarfs in unprecedented detail. KPIC aims to spectrally character
Externí odkaz:
http://arxiv.org/abs/2408.10173
Autor:
Li, Yiting, Brandt, Timothy D., Franson, Kyle, An, Qier, Tobin, Taylor, Currie, Thayne, Chen, Minghan, Wang, Lanxuan, Dupuy, Trent J., Bowens-Rubin, Rachel, Salama, Maissa, Lewis, Briley L., Gibbs, Aidan, Bowler, Brendan P., Jensen-Clem, Rebecca, Faherty, Jacqueline, Fitzgerald, Michael P., Mazin, Benjamin A.
We present the joint astrometric and direct imaging discovery, mass measurement, and orbital analysis of HD 63754 B (HIP 38216 B), a companion near the stellar-substellar boundary orbiting ~20 AU from its Sun-like host. HD 63754 was observed in our o
Externí odkaz:
http://arxiv.org/abs/2408.01546