Zobrazeno 1 - 10
of 33
pro vyhledávání: '"George W. King"'
Publikováno v:
The Astronomical Journal, Vol 168, Iss 6, p 262 (2024)
We present an adaptation of the exoplanet transit model code batman , in order to permit the generation of X-ray transits. Our underlying extended coronal model assumes an isothermal plasma that is radially symmetric. While this ignores the effect of
Externí odkaz:
https://doaj.org/article/24607c54e7f446bb98f8e90992a92ba3
Publikováno v:
The Astronomical Journal, Vol 168, Iss 4, p 177 (2024)
Detecting exoplanet transits at X-ray wavelengths would provide a window into the effects of high-energy irradiation on the upper atmospheres of planets. However, stars are relatively dim in the X-ray, making exoplanet transit detections difficult wi
Externí odkaz:
https://doaj.org/article/b087639f2cb342eca48fe59652e4149d
Autor:
Munazza K. Alam, James Kirk, Leonardo A. Dos Santos, Patrick McCreery, Andrew P. Allan, James E. Owen, Aline A. Vidotto, Romain Allart, Vincent Bourrier, Néstor Espinoza, George W. King, Mercedes López-Morales, Julia V. Seidel
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 102 (2024)
We search for excess in-transit absorption of neutral helium at 1.083 μ m in the atmospheres of the young (
Externí odkaz:
https://doaj.org/article/8d75c3a49d494ca8aab11b848346bad3
Autor:
W. Garrett Levine, Shreyas Vissapragada, Adina D. Feinstein, George W. King, Aleck Hernandez, Lía Corrales, Michael Greklek-McKeon, Heather A. Knutson
Publikováno v:
The Astronomical Journal, Vol 168, Iss 2, p 65 (2024)
Aeronomy, the study of Earth’s upper atmosphere and its interaction with the local space environment, has long traced changes in the thermospheres of Earth and other solar system planets to solar variability in the X-ray and extreme-ultraviolet (co
Externí odkaz:
https://doaj.org/article/1d574615dd3248689cb40a5e5fba837b
Autor:
Chima D. McGruder, Mercedes López-Morales, James Kirk, Benjamin V. Rackham, Erin May, Eva-Maria Ahrer, George W. King, Munazza K. Alam, Natalie H. Allen, Kevin Ortiz Ceballos, Néstor Espinoza, Tyler Gardner, Andrés Jordán, Kelly Meyer, John D. Monnier, David J. Osip, Peter J. Wheatley
Publikováno v:
The Astronomical Journal, Vol 166, Iss 3, p 120 (2023)
We present new optical transmission spectra for two hot Jupiters: WASP-25b ( M = 0.56 M _J ; R = 1.23 R _J ; P = 3.76 days) and WASP-124b ( M = 0.58 M _J ; R = 1.34 R _J ; P = 3.37 days), with wavelength coverages of 4200–9100 Å and 4570–9940 Å
Externí odkaz:
https://doaj.org/article/2177e940d0d24a3d9be79238e3d55404
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 522:4251-4264
We model the evaporation histories of the three planets around K2-136, a K-dwarf in the Hyades open cluster with an age of 700 Myr. The star hosts three transiting planets, with radii of 1.0, 3.0 and 1.5 Earth radii, where the middle planet lies abov
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9a3c70c5c658838c4f01b4b7290ea7bb
https://doi.org/10.1093/mnras/stad1257
https://doi.org/10.1093/mnras/stad1257
Autor:
George W King, Peter J Wheatley, Victoria A Fawcett, Nicola J Miller, Lía R Corrales, Marcel A Agüeros
Publikováno v:
Monthly notices of the Royal Astronomical Society, 2022, Vol.512(1), pp.41-55 [Peer Reviewed Journal]
We present an analysis of XMM-Newton observations of four stars in the young (670 Myr) open cluster Praesepe. The planets hosted by these stars all lie close in radius-period space to the radius-period valley and/or the Neptunian desert, two features
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff13a757b15d01d01739565e51730dfb
Short wavelength exoplanet transit measurements have been used to probe mass-loss in exoplanet atmospheres. We present the Swift-UVOT transit light curves for five hot Jupiters orbiting UV-bright F-type stars: XO-3, KELT-3, WASP-3, WASP-62, and HAT-P
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e7685fa3669467b3863a9da1fba2acc
http://arxiv.org/abs/2110.01579
http://arxiv.org/abs/2110.01579
Autor:
Andrés Jordán, Sara Seager, Brett C. Addison, Maximilian N. Günther, Monika Lendl, Jack Okumura, Jorge Lillo-Box, Jon M. Jenkins, Roland Vanderspek, C. G. Tinney, Benjamin J. Fulton, Peter J. Wheatley, Erik A. Petigura, Beth A. Henderson, C. Stibbard, P. Figueira, Rafael Brahm, Eric L. N. Jensen, Michael Reefe, Cesar Briceno, Chris Stockdale, S. Hojjatpanah, Farisa Y. Morales, Alexis M. S. Smith, Caroline Dorn, Thomas Henning, Vardan Adibekyan, George W. King, Lauren M. Weiss, David R. Ciardi, Howard Isaacson, Richard P. Schwarz, Thomas Barclay, Stephen R. Kane, Keivan G. Stassun, David W. Latham, Malcolm Fridlund, Jack S. Acton, Ravit Helled, Sharon X. Wang, John Berberian, Joseph D. Twicken, J. F. Otegi, David R. Anderson, Sarah L. Casewell, Elise Furlan, Elisabeth Matthews, Johanna Teske, Rodrigo F. Díaz, Samuel Gill, Daniel Bayliss, Ian Crossfield, Peter Plavchan, Matthew W. Mengel, Joshua E. Schlieder, John F. Kielkopf, Stéphane Udry, E. Delgado Mena, H. P. Osborn, Avi Shporer, R. Cloutier, J. Villasenor, Duncan J. Wright, E. Gaidos, A. Osborn, K. I. Collins, Angelle Tanner, Nicholas M. Law, Björn Benneke, Joshua N. Winn, Fei Dai, Nicholas J. Scott, Erica J. Gonzales, Courtney D. Dressing, Sarah Ballard, Don Pollacco, Coel Hellier, Michael R. Goad, David J. Armstrong, Varoujan Gorjian, Paula Sarkis, Richard C. Kidwell, F. Zohrabi, Nuno C. Santos, David Barrado, Matthew R. Burleigh, Sergio Hoyer, Claire Geneser, Christopher J. Burke, Richard G. West, James McCormac, P. A. Strøm, Daniel Huber, Aleisha Hogan, Paul Robertson, Natalie M. Batalha, Edward M. Bryant, Liam Raynard, Karen A. Collins, Robert A. Wittenmyer, Mark E. Rose, Rachel A. Matson, Steve B. Howell, James S. Jenkins, Jose I. Vines, S. C. C. Barros, Néstor Espinoza, B. Cale, Andrew W. Howard, Diana Dragomir, Alexandre Santerne, M. Lund, Olivier Demangeon, Brendan P. Bowler, Benjamin F. Cooke, Xavier Dumusque, Andrew W. Mann, Hui Zhang, Carl Ziegler, Arpita Roy, Rosanna H. Tilbrook, Sérgio F. Sousa, George R. Ricker, Jonathan Horner, Elisa V. Quintana, Thiam-Guan Tan, Louise D. Nielsen, François Bouchy
Publikováno v:
Monthly Notices of the Royal Astronomical Society
MNRAS
MNRAS, 2021, 507 (2), pp.2782-2803. ⟨10.1093/mnras/stab2313⟩
Monthly Notices of the Royal Astronomical Society, 507(2), 2782-2803
MNRAS
MNRAS, 2021, 507 (2), pp.2782-2803. ⟨10.1093/mnras/stab2313⟩
Monthly Notices of the Royal Astronomical Society, 507(2), 2782-2803
We present the bright (V$_{mag} = 9.12$), multi-planet system TOI-431, characterised with photometry and radial velocities. We estimate the stellar rotation period to be $30.5 \pm 0.7$ days using archival photometry and radial velocities. TOI-431b is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e6466f6b97f9534884a0fbc2c4a2504
https://resolver.caltech.edu/CaltechAUTHORS:20211008-175558303
https://resolver.caltech.edu/CaltechAUTHORS:20211008-175558303
Autor:
Hannah Diamond-Lowe, Laura Kreidberg, C. E. Harman, Eliza M.-R. Kempton, Leslie A. Rogers, Simon R. G. Joyce, Jason D. Eastman, George W. King, Ravi Kopparapu, Allison Youngblood, Molly R. Kosiarek, John H. Livingston, Kevin K. Hardegree-Ullman, Ian J. M. Crossfield
Publikováno v:
Diamond-Lowe, H, Kreidberg, L, Harman, C E, Kempton, E M-R, Rogers, L A, Joyce, S R G, Eastman, J D, King, G W, Kopparapu, R, Youngblood, A, Kosiarek, M R, Livingston, J H, Hardegree-Ullman, K K & Crossfield, I J M 2022, ' The K2-3 System Revisited: Testing Photoevaporation and Core-powered Mass Loss with Three Small Planets Spanning the Radius Valley ', Astronomical Journal, vol. 164, 172 . https://doi.org/10.3847/1538-3881/ac7807
Multi-planet systems orbiting M dwarfs provide valuable tests of theories of small planet formation and evolution. K2-3 is an early M dwarf hosting three small exoplanets (1.5-2.0 Earth radii) at distances of 0.07-0.20 AU. We measure the high-energy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eff064caf64df7de608fbc4cb6e1a64a
https://doi.org/10.3847/1538-3881/ac7807
https://doi.org/10.3847/1538-3881/ac7807