Zobrazeno 1 - 10
of 431
pro vyhledávání: '"P. Wizinowich"'
Publikováno v:
Proceedings of the SPIE, Volume 13097, id. 1309783 10 pp. (2024)
Adaptive optics (AO) systems are crucial for high-resolution astronomical observations by compensating for atmospheric turbulence. While laser guide stars (LGS) address high-order wavefront aberrations, natural guide stars (NGS) remain vital for low-
Externí odkaz:
http://arxiv.org/abs/2410.12084
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:
Wallack, Nicole L., Ruffio, Jean-Baptiste, Ruane, Garreth, Ren, Bin B., Xuan, Jerry W., Villenave, Marion, Mawet, Dimitri, Stapelfeldt, Karl, Wang, Jason J., Liu, Michael C., Absil, Olivier, Alvarez, Carlos, Bae, Jaehan, Bond, Charlotte, Bottom, Michael, Calvin, Benjamin, Choquet, Élodie, Christiaens, Valentin, Cook, Therese, Castellá, Bruno Femenía, Gonzalez, Carlos Gomez, Guidi, Greta, Huby, Elsa, Kastner, Joel, Knutson, Heather A., Meshkat, Tiffany, Ngo, Henry, Ragland, Sam, Reggiani, Maddalena, Ricci, Luca, Serabyn, Eugene, Uyama, Taichi, Williams, Jonathan P., Wizinowich, Peter, Zawol, Zoe, Zhang, Shangjia, Zhu, Zhaohuan
Recent Atacama Large Millimeter/submillimeter Array (ALMA) observations of protoplanetary disks in the millimeter continuum have shown a variety of radial gaps, cavities, and spiral features. These substructures may be signposts for ongoing planet fo
Externí odkaz:
http://arxiv.org/abs/2408.04048
Autor:
Salama, Maïssa, Guthery, Charlotte, Chambouleyron, Vincent, Jensen-Clem, Rebecca, Wallace, J. Kent, Troy, Mitchell, Delorme, Jacques-Robert, Dillon, Daren, Echeverri, Daniel, Yeyuan, Xin, Hao, Wen, Xuan, Jovanovic, Nemanja, Mawet, Dimitri, Wizinowich, Peter L., Bowens-Rubin, Rachel
We extend our previous demonstration of the first on-sky primary mirror segment closed-loop control on Keck using a vector-Zernike wavefront sensor (vZWFS), which improved the Strehl ratio on the NIRC2 science camera by up to 10 percentage points. Se
Externí odkaz:
http://arxiv.org/abs/2407.16791
Autor:
Salama, Maissa, Guthery, Charlotte, Chambouleyron, Vincent, Jensen-Clem, Rebecca, Wallace, J. Kent, Delorme, Jacques-Robert, Troy, Mitchell, Wenger, Tobias, Echeverri, Daniel, Finnerty, Luke, Jovanovic, Nemanja, Liberman, Joshua, Lopez, Ronald A., Mawet, Dimitri, Morris, Evan C., van Kooten, Maaike, Wang, Jason J., Wizinowich, Peter, Xin, Yinzi, Xuan, Jerry
We present the first on-sky segmented primary mirror closed-loop piston control using a Zernike wavefront sensor (ZWFS) installed on the Keck II telescope. Segment co-phasing errors are a primary contributor to contrast limits on Keck and will be nec
Externí odkaz:
http://arxiv.org/abs/2404.08728
Autor:
Christou, Julian, Chun, Mark, Dekany, Richard, Hinz, Philip, Lu, Jessica, Males, Jared, Wizinowich, Peter
In the recent Astro2020 Decadal Report, ''Pathways to Discovery in Astronomy and Astrophysics for the 2020s'' Adaptive Optics (AO) was identified as a crucial technology for a variety of reasons. These included an emphasis on high-contrast imaging an
Externí odkaz:
http://arxiv.org/abs/2402.06743
Autor:
Xuan, Jerry W., Wang, Jason J., Finnerty, Luke, Horstman, Katelyn, Grimm, Simon, Peck, Anne, Nielsen, Eric L., Knutson, Heather A., Mawet, Dimitri, Isaacson, Howard, Howard, Andrew W., Liu, Michael C., Walker, Sam, Phillips, Mark, Blake, Geoffrey, Ruffio, Jean-Baptiste, Zhang, Yapeng, Inglis, Julie, Wallack, Nicole L., Sanghi, Aniket, Gonzales, Erica, Dai, Fei, Baker, Ashley, Bartos, Randall, Bond, Charlotte, Bryan, Marta L., Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Greg, Echeverri, Daniel, Fitzgerald, Michael P., Jovanovic, Nemanja, Liberman, Joshua, López, Ronald A., Martin, Emily C., Morris, Evan, Pezzato, Jacklyn, Ruane, Garreth, Sappey, Ben, Schofield, Tobias, Skemer, Andrew, Venenciano, Taylor, Wallace, James K., Wang, Ji, Wizinowich, Peter, Xin, Yinzi, Agrawal, Shubh, Ó, Clarissa R. Do, Hsu, Chih-Chun, Phillips, Caprice
M dwarfs are common host stars to exoplanets but often lack atmospheric abundance measurements. Late-M dwarfs are also good analogs to the youngest substellar companions, which share similar $T_{\rm eff}\sim2300-2800~K$. We present atmospheric analys
Externí odkaz:
http://arxiv.org/abs/2312.02297
Autor:
Finnerty, Luke, Schofield, Tobias, Sappey, Ben, Xuan, Jerry W., Ruffio, Jean-Baptiste, Wang, Jason J., Delorme, Jacques-Robert, Blake, Geoffrey A., Buzard, Cam, Fitzgerald, Michael P., Baker, Ashley, Bartos, Randall, Bond, Charlotte Z., Calvin, Benjamin, Cetre, Sylvain, Doppmann, Greg, Echeverri, Daniel, Jovanovic, Nemanja, Liberman, Joshua, Lopez, Ronald A., Martin, Emily C., Mawet, Dimitri, Morris, Evan, Pezzato, Jacklyn, Phillips, Caprice L., Ragland, Sam, Skemer, Andrew, Venenciano, Taylor, Wallace, J. Kent, Wallack, Nicole L., Wang, Ji, Wizinowich, Peter
We present Keck/KPIC high-resolution ($R\sim35,000$) $K$-band thermal emission spectroscopy of the ultra-hot Jupiter WASP-33b. The use of KPIC's single-mode fibers greatly improves both blaze and line-spread stabilities relative to slit spectrographs
Externí odkaz:
http://arxiv.org/abs/2305.19389
Autor:
Ruffio, Jean-Baptiste, Horstman, Katelyn, Mawet, Dimitri, Rosenthal, Lee J., Batygin, Konstantin, Wang, Jason J., Millar-Blanchaer, Maxwell, Wang, Ji, Fulton, Benjamin J., Konopacky, Quinn M., Agrawal, Shubh, Hirsch, Lea A., Howard, Andrew W., Blunt, Sarah, Nielsen, Eric, Baker, Ashley, Bartos, Randall, Bond, Charlotte Z., Calvin, Benjamin, Cetre, Sylvain, Delorme, Jacques-Robert, Doppmann, Greg, Echeverri, Daniel, Finnerty, Luke, Fitzgerald, Michael P., Jovanovic, Nemanja, López, 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, Xuan, Jerry W.
The detection of satellites around extrasolar planets, so called exomoons, remains a largely unexplored territory. In this work, we study the potential of detecting these elusive objects from radial velocity monitoring of self-luminous directly image
Externí odkaz:
http://arxiv.org/abs/2301.04206