Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Steven R. Gibson"'
Autor:
Ryan A. Rubenzahl, Andrew W. Howard, Samuel Halverson, Cristobal Petrovich, Isabel Angelo, Guđmundur Stefánsson, Fei Dai, Aaron Householder, Benjamin Fulton, Steven R. Gibson, Arpita Roy, Abby P. Shaum, Howard Isaacson, Max Brodheim, William Deich, Grant M. Hill, Bradford Holden, Daniel Huber, Russ R. Laher, Kyle Lanclos, Joel N. Payne, Erik A. Petigura, Christian Schwab, Josh Walawender, Sharon X. Wang, Lauren M. Weiss, Joshua N. Winn, Jason T. Wright
Publikováno v:
The Astrophysical Journal Letters, Vol 971, Iss 2, p L40 (2024)
The orbits of close-in exoplanets provide clues to their formation and evolutionary history. Many close-in exoplanets likely formed far out in their protoplanetary disks and migrated to their current orbits, perhaps via high-eccentricity migration (H
Externí odkaz:
https://doaj.org/article/234d08d633ca4ccf9582f2e68d559638
Autor:
Jack Lubin, Erik A. Petigura, Judah Van Zandt, Corey Beard, Fei Dai, Samuel Halverson, Rae Holcomb, Andrew W. Howard, Howard Isaacson, Jacob Luhn, Paul Robertson, Ryan A. Rubenzahl, Guđmundur Stefánsson, Joshua N. Winn, Max Brodheim, William Deich, Grant M. Hill, Steven R. Gibson, Bradford Holden, Aaron Householder, Russ R. Laher, Kyle Lanclos, Joel Payne, Arpita Roy, Roger Smith, Abby P. Shaum, Christian Schwab, Josh Walawender
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 196 (2024)
We report the sky-projected spin–orbit angle λ for HD 191939 b, the innermost planet in a six-planet system, using Keck/KPF to detect the Rossiter–McLaughlin (RM) effect. Planet b is a sub-Neptune with radius 3.4 ± 0.8 R _⊕ and mass 10.0 ± 0
Externí odkaz:
https://doaj.org/article/389e171f9da44ce7b8ff4fa828a83283
Autor:
Steven Giacalone, Fei Dai, J. J. Zanazzi, Andrew W. Howard, Courtney D. Dressing, Joshua N. Winn, Ryan A. Rubenzahl, Theron W. Carmichael, Noah Vowell, Aurora Kesseli, Samuel Halverson, Howard Isaacson, Max Brodheim, William Deich, Benjamin J. Fulton, Steven R. Gibson, Grant M. Hill, Bradford Holden, Aaron Householder, Stephen Kaye, Russ R. Laher, Kyle Lanclos, Joel Payne, Erik A. Petigura, Arpita Roy, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Chris Smith, Guðmundur Stefánsson, Josh Walawender, Sharon X. Wang, Lauren M. Weiss, Sherry Yeh
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 189 (2024)
We introduce the OATMEAL survey, an effort to measure the obliquities of stars with transiting brown dwarf companions. We observed a transit of the close-in ( P _orb = 1.74 days) brown dwarf GPX-1 b using the Keck Planet Finder spectrograph to measur
Externí odkaz:
https://doaj.org/article/b908db9969b947f68699f93e2781be78
Autor:
Ryan A. Rubenzahl, Fei Dai, Samuel Halverson, Andrew W. Howard, Aaron Householder, Benjamin Fulton, Aida Behmard, Steven R. Gibson, Arpita Roy, Abby P. Shaum, Howard Isaacson, Max Brodheim, William Deich, Grant M. Hill, Bradford Holden, Russ R. Laher, Kyle Lanclos, Joel N. Payne, Erik A. Petigura, Christian Schwab, Chris Smith, Guðmundur Stefánsson, Josh Walawender, Sharon X. Wang, Lauren M. Weiss, Joshua N. Winn, Edward Wishnow
Publikováno v:
The Astronomical Journal, Vol 168, Iss 5, p 188 (2024)
We present the first spectroscopic transit results from the newly commissioned Keck Planet Finder on the Keck-I telescope at W. M. Keck Observatory. We observed a transit of KELT-18 b, an inflated ultrahot Jupiter orbiting a hot star ( T _eff = 6670
Externí odkaz:
https://doaj.org/article/bc0a3b6cb39944dba3c748a995c49e87
Autor:
Fei Dai, Andrew W. Howard, Samuel Halverson, Jaume Orell-Miquel, Enric Pallé, Howard Isaacson, Benjamin Fulton, Ellen M. Price, Mykhaylo Plotnykov, Leslie A. Rogers, Diana Valencia, Kimberly Paragas, Michael Greklek-McKeon, Jonathan Gomez Barrientos, Heather A. Knutson, Erik A. Petigura, Lauren M. Weiss, Rena Lee, Casey L. Brinkman, Daniel Huber, Gumundur Stefánsson, Kento Masuda, Steven Giacalone, Cicero X. Lu, Edwin S. Kite, Renyu Hu, Eric Gaidos, Michael Zhang, Ryan A. Rubenzahl, Joshua N. Winn, Te Han, Corey Beard, Rae Holcomb, Aaron Householder, Gregory J. Gilbert, Jack Lubin, J. M. Joel Ong, Alex S. Polanski, Nicholas Saunders, Judah Van Zandt, Samuel W. Yee, Jingwen Zhang, Jon Zink, Bradford Holden, Ashley Baker, Max Brodheim, Ian J. M. Crossfield, William Deich, Jerry Edelstein, Steven R. Gibson, Grant M. Hill, Sharon R Jelinsky, Marc Kassis, Russ R. Laher, Kyle Lanclos, Scott Lilley, Joel N. Payne, Kodi Rider, Paul Robertson, Arpita Roy, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Chris Smith, Adam Vandenberg, Josh Walawender, Sharon X. Wang, Shin-Ywan (Cindy) Wang, Edward Wishnow, Jason T. Wright, Sherry Yeh, José A. Caballero, Juan C. Morales, Felipe Murgas, Evangelos Nagel, Ansgar Reiners, Andreas Schweitzer, Hugo M. Tabernero, Mathias Zechmeister, Alton Spencer, David R. Ciardi, Catherine A. Clark, Michael B. Lund, Douglas A. Caldwell, Karen A. Collins, Richard P. Schwarz, Khalid Barkaoui, Cristilyn Watkins, Avi Shporer, Norio Narita, Akihiko Fukui, Gregor Srdoc, David W. Latham, Jon M. Jenkins, George R. Ricker, Sara Seager, Roland Vanderspek
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 101 (2024)
TOI-6255 b (GJ 4256) is an Earth-sized planet (1.079 ± 0.065 R _⊕ ) with an orbital period of only 5.7 hr. With the newly commissioned Keck Planet Finder and CARMENES spectrographs, we determine the planet’s mass to be 1.44 ± 0.14 M _⊕ . The
Externí odkaz:
https://doaj.org/article/0984db33703e4dd29fc69e546aaae69a
Autor:
Nicholas Saunders, Samuel K. Grunblatt, Ashley Chontos, Fei Dai, Daniel Huber, Jingwen Zhang, Guđmundur Stefánsson, Jennifer L. van Saders, Joshua N. Winn, Daniel Hey, Andrew W. Howard, Benjamin Fulton, Howard Isaacson, Corey Beard, Steven Giacalone, Judah Van Zandt, Joseph M. Akana Murphey, Malena Rice, Sarah Blunt, Emma Turtelboom, Paul A. Dalba, Jack Lubin, Casey Brinkman, Emma M. Louden, Emma Page, Cristilyn N. Watkins, Karen A. Collins, Chris Stockdale, Thiam-Guan Tan, Richard P. Schwarz, Bob Massey, Steve B. Howell, Andrew Vanderburg, George R. Ricker, Jon M. Jenkins, Sara Seager, Jessie L. Christiansen, Tansu Daylan, Ben Falk, Max Brodheim, Steven R. Gibson, Grant M. Hill, Bradford Holden, Aaron Householder, Stephen Kaye, Russ R. Laher, Kyle Lanclos, Erik A. Petigura, Arpita Roy, Ryan A. Rubenzahl, Christian Schwab, Abby P. Shaum, Martin M. Sirk, Christopher L. Smith, Josh Walawender, Sherry Yeh
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 81 (2024)
The degree of alignment between a star’s spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution. Hot Jupiters orbiting hot st
Externí odkaz:
https://doaj.org/article/5262b598be15457b9a2c9154dee4481f
Autor:
Tim Miller, Jim Thorne, Stephen Kaye, Yuzo Ishikawa, Truman Wold, Kodi A. Rider, Kyle Lanclos, Dale Sandford, Dave Rumph, Jacob Pember, Scott Lilley, Charles Beichman, Ean James, William T. S. Deich, Andreas Seifahrt, Tod Von Boeckmann, Anna Wolfenberger, Constance M. Rockosi, Jerry Edelstein, Arpita Roy, Adam Vandenberg, Christopher L. Smith, Edward H. Wishnow, Cindy Wang, Y. V. Gurevich, Maureen Savage, Thomas Brown, Samuel Halverson, Mavourneen Wilcox, Mike Raffanti, Benjamin J. Fulton, Steve Allen, Tobias Feger, Sharon Jelinsky, Abby Shaum, Qifan Wang, Julian Stuermer, Luke Gers, Jason Grillo, Steve Milner, David W. Coutts, Andrew W. Howard, Peter Wizinowich, Ryan A. Rubenzahl, Ben McCarney, Jason C. Y. Chin, Christian Schwab, Martin Sirk, Marie Weisfeiler, Steven R. Gibson, David Cowley, Timothy J. O'Hanlon, Kelleen Casey, M. Kassis, Ashley Baker, Roger Smith, Bruce Berriman, Adela Li
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy VIII.
The Keck Planet Finder (KPF) is a fiber-fed, high-resolution, high-stability spectrometer in development at the UC Berkeley Space Sciences Laboratory for the W.M. Keck Observatory. KPF is designed to characterize exoplanets via Doppler spectroscopy w
Autor:
Timothy D. Morton, Ana Colon, Philip S. Muirhead, Jon de Vera, Peter Plavchan, Connor Robinson, Emilio E. Falco, Adam S. Bolton, Samson A. Johnson, Gilbert A. Esquerdo, John Hamlin, William J. Schap, Sharon X. Wang, Gabriel Grell, Jason D. Eastman, Anthony Sergi, Kevin O. Rivera-García, Juliana Garcia-Mejia, Audrey Houghton, George Lawrence, Eric Blackhurst, Matthew A. Cornachione, Jonathan Horner, Annie Kirby, Justin Myles, Claire Geneser, Robert A. Wittenmyer, Michael Bottom, David H. Sliski, Tony Reed, Samuel Halverson, Nate McCrady, Ashley D. Baker, Jason T. Wright, John Asher Johnson, Chantanelle Nava, Howard M. Relles, Julien Andrew Luebbers, S. Janssens, Cullen H. Blake, Bryson Cale, Graeme Jonas, Perry Berlind, Forest Chaput de Saintonge, Ted Groner, Steven R. Gibson, Michael L. Calkins, Reed Riddle, Jonathan J. Swift, Maurice Wilson, Damien Jones, Pascal Fortin, M. Henderson, Thomas G. Beatty, Stuart I. Barnes
The MINiature Exoplanet Radial Velocity Array (MINERVA) is a dedicated observatory of four 0.7m robotic telescopes fiber-fed to a KiwiSpec spectrograph. The MINERVA mission is to discover super-Earths in the habitable zones of nearby stars. This can
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94b44f7847d793e412f816fc94530d12
Autor:
Kodi A. Rider, Jerry Edelstein, Steven R. Gibson, Edward H. Wishnow, Christopher L. Smith, Andrew W. Howard
The Keck Planet Finder (KPF) is a fiber-fed, high-resolution, high-stability spectrometer in development for the W.M. Keck Observatory. To measure Doppler shifts to 0.5 m/s or better requires some of the optics be stable to 2 nm vertically and 2 nrad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cddd7d37dc8f0cef0731b3f02213f6d
https://resolver.caltech.edu/CaltechAUTHORS:20190109-111011829
https://resolver.caltech.edu/CaltechAUTHORS:20190109-111011829
Autor:
Timothy O'Hanlon, Steven R. Gibson, Samuel Halverson, Edward H. Wishnow, Yuzo Ishikawa, Martin M. Sirk, Jerry Edelstein, Andrew W. Howard, Marie Weisfeiler, James Curtis, Arpita Roy, D. Finstad, Elisha Jhoti
We present the design and test results of a double-scrambler and fiber agitator system for the Keck Planet Finder (KPF) spectrograph. The mechanical agitator for modal noise suppression is constructed from two linear stages with the fibers mounted in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fcc2765e1259ff8f0bdbbabee882a69c
https://resolver.caltech.edu/CaltechAUTHORS:20190103-153504616
https://resolver.caltech.edu/CaltechAUTHORS:20190103-153504616