Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Nathaniel J. Cunningham"'
Autor:
Lorenz Roth, H. Todd Smith, Kazuo Yoshioka, Tracy M. Becker, Aljona Blöcker, Nathaniel J. Cunningham, Nickolay Ivchenko, Kurt D. Retherford, Joachim Saur, Michael Velez, Fuminori Tsuchiya
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 5, p 87 (2023)
In situ plasma measurements as well as remote mapping of energetic neutral atoms around Jupiter provide indirect evidence that an enhancement of neutral gas is present near the orbit of the moon Europa. Simulations suggest that such a neutral gas tor
Externí odkaz:
https://doaj.org/article/c4929a1b5c44449fbeaa827e21789d76
Autor:
Joel Wm. Parker, Nathaniel J. Cunningham, Anne J. Verbiscer, Brian A. Keeney, New Horizons Team, S. Alan Stern
We present the first measurements of Charon's far-ultraviolet surface reflectance, obtained by the Alice spectrograph on New Horizons. We find no measurable flux shortward of 1650 A, and Charon's geometric albedo is $
Comment: Accepted for publi
Comment: Accepted for publi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35ab593113a59650376062894fed392c
Publikováno v:
UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI.
We have developed the capability to optimize a diffraction grating with arbitrary groove density and direction as a function of location. The added degrees of freedom allow additional correction of optical aberrations beyond what is available to holo
Autor:
Kurt D. Retherford, Lorenz Roth, Nickolay Ivchenko, Paul D. Feldman, Darrell F. Strobel, John R. Spencer, Joachim Saur, Nathaniel J. Cunningham
Publikováno v:
Geophysical Research Letters. 43:2465-2472
We report far ultraviolet observations of Ceres obtained with the Cosmic Origin Spectrograph (COS) of the Hubble Space Telescope in the search for atomic emissions from an exosphere. The derived brightnesses at the oxygen lines at 1304 Å and 1356 Å
Autor:
Linda T. Elkins-Tanton, Lorenz Roth, Zoe A. Landsman, Jan-Erik Walhund, P. Molyneux, Kurt D. Retherford, Emma Peavler, Lori M. Feaga, Tracy M. Becker, Nathaniel J. Cunningham
Publikováno v:
The Planetary Science Journal. 1:53
The Main Belt Asteroid (16) Psyche is the target object of the NASA Discovery Mission Psyche. We observed the asteroid at ultraviolet (UV) wavelengths (170–310 nm) using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope during
Autor:
Nathaniel J. Cunningham, H. A. Elliott, Joshua A. Kammer, John R. Spencer, Henry B. Throop, Catherine B. Olkin, Michael W. Davis, David P. Hinson, S. Alan Stern, Harold A. Weaver, Thomas K. Greathouse, Wayne Pryor, Andrew F. Cheng, Fran Bagenal, Kimberly Ennico, Joel Wm. Parker, Andrew J. Steffl, Maarten H. Versteeg, G. Randall Gladstone, Leslie A. Young, Michael E. Summers, Kurt D. Retherford, Darrell F. Strobel, Ivan Linscott
Recent observations of interplanetary medium (IPM) atomic hydrogen Lyman-{\alpha} (Ly{\alpha}) emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons (NH), are presented. The observations include regularly sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7454366063637f6dee78a08e98fe5c71
http://arxiv.org/abs/1808.00400
http://arxiv.org/abs/1808.00400
Autor:
Nathaniel J. Cunningham, John R. Spencer, Paul D. Feldman, Darrell F. Strobel, Kevin France, Steven N. Osterman
Publikováno v:
Icarus. 254:178-189
We report the result of a search for evidence of an O 2 -dominated atmosphere on Callisto, using the high far-ultraviolet sensitivity of the Hubble Space Telescope Cosmic Origins Spectrograph (COS). Observations of Callisto’s leading/Jupiter-facing
Autor:
G. L. Tyler, Nathaniel J. Cunningham, Andrew J. Steffl, Darrell F. Strobel, Catherine B. Olkin, David P. Hinson, D. C. Slater, Andrew F. Cheng, Joshua A. Kammer, S. A. Stern, Joel Wm. Parker, W. W. Woods, M. H. Versteeg, Eliot F. Young, Kurt D. Retherford, Panayotis Lavvas, Henry B. Throop, Michael E. Summers, Leslie A. Young, Yuk L. Yung, Alex Parker, Harold A. Weaver, Kelsi N. Singer, Xun Zhu, Carey M. Lisse, Ivan Linscott, Michael L. Wong, Kimberly Ennico, Constantine Tsang, Thomas K. Greathouse, Werner Curdt, Eric Schindhelm, G. R. Gladstone
Observations made during the New Horizons flyby provide a detailed snapshot of the current state of Pluto's atmosphere. While the lower atmosphere (at altitudes
in Science 351, aad8866 (2016)
in Science 351, aad8866 (2016)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fdd5d515e959f6bb68b5eb30edf4861b
Publikováno v:
Proceedings of the International Astronomical Union. 1:12-22
Observations of the nearest regions of massive star formation such as Orion are reviewed. Early-type stars in the local OB associations, as well as their superbubbles and supershells provide a fossil record of massive star birth in the Solar vicinity
Publikováno v:
The Astrophysical Journal. 611:353-359
We have observed the high-mass X-ray binary X Persei/4U 0352+30 with the Low Energy Transmission Grating Spectrometer (LETGS) aboard the Chandra X-Ray Observatory. We fit the spectrum near the oxygen K-shell absorption edge to determine the total (ga