Zobrazeno 1 - 10
of 478
pro vyhledávání: '"stellar occultation"'
Publikováno v:
Remote Sensing, Vol 16, Iss 11, p 2006 (2024)
The stellar occultation technique is capable of atmospheric trace gas detection using the molecule absorption characteristics of the stellar spectra. In this paper, the non-iterative and iterative retrieval methods for oxygen and air density detectio
Externí odkaz:
https://doaj.org/article/3a3098f496dd416ca1e7de76182c5ad9
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 11, p 247 (2024)
Measurements made by Voyager 2 during its flyby of Uranus in 1986 found warm stratospheric and hot thermospheric temperatures that cannot be explained by solar energy alone. This contributes to what is known as the “giant planet energy crisis”: t
Externí odkaz:
https://doaj.org/article/ec1cf9b75e1c4d9d8f3e0a0ae9314c47
Autor:
Bastian Knieling, Karsten Schindler, Amanda A. Sickafoose, Michael J. Person, Stephen E. Levine, Alfred Krabbe
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 4, p 104 (2024)
Gaussian process (GP) regression is a nonparametric Bayesian approach that has been used successfully in various astronomical domains, especially in time-domain astronomy. The most common applications are the smoothing of data for interpolation and t
Externí odkaz:
https://doaj.org/article/aed03369563d452890d7d9e13287bc0f
Autor:
Michael A. Velez, Kurt D. Retherford, Vincent Hue, Joshua A. Kammer, Tracy M. Becker, G. Randall Gladstone, Michael W. Davis, Thomas K. Greathouse, Philippa M. Molyneux, Shawn M. Brooks, Ujjwal Raut, Maarten H. Versteeg
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 4, p 93 (2024)
Ultraviolet spectroscopy is a powerful method to study planetary surface composition through reflectance measurements, atmospheric composition through stellar/solar occultations, transits of other planetary bodies, and direct imaging of airglow and a
Externí odkaz:
https://doaj.org/article/296080a27f4f4b0ca548d1b63127ecef
Publikováno v:
Atmosphere, Vol 14, Iss 12, p 1818 (2023)
In order to improve the inversion accuracy of stellar occultation data and to provide a reference for the selection of inversion methods with higher accuracy in the future, this study compared and analyzed the inversion effects of two different metho
Externí odkaz:
https://doaj.org/article/6d9295ac0604493b82d5312c3c516bc5
Publikováno v:
Earth and Planetary Physics, Vol 6, Iss 1, Pp 61-69 (2022)
Atmospheric stellar occultation observation technology is an advanced space-based detection technology that can measure the vertical distribution of trace gas composition, temperature, and aerosol content in a planet’s atmosphere. In this study, an
Externí odkaz:
https://doaj.org/article/96438a7e2dd2471a8bdcb71a5be06a0b
Akademický článek
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Publikováno v:
Remote Sensing, Vol 15, Iss 14, p 3681 (2023)
Stellar occultation instruments detect the transmission of stellar spectra through the planetary atmosphere to retrieve densities of various atmospheric components. This paper introduces an idea of using instruments with bandpass filters for stellar
Externí odkaz:
https://doaj.org/article/d1903c7b1cd241efa5d81bc5be9847b5
Autor:
Amanda A. Sickafoose, Stephen E. Levine, Amanda S. Bosh, Michael J. Person, Carlos A. Zuluaga, Bastian Knieling, Mark C. Lewis, Karsten Schindler
Publikováno v:
The Planetary Science Journal, Vol 4, Iss 11, p 221 (2023)
A stellar occultation of Gaia DR3 2646598228351156352 by the Centaur (2060) Chiron was observed from the South African Astronomical Observatory on 2018 November 28 UT. Here we present a positive detection of material surrounding Chiron from the 74-in
Externí odkaz:
https://doaj.org/article/3a906afbe1c74c39bad2901878743e37
Autor:
Qicheng Zhang, Gregg W. Hallinan, Navtej S. Saini, Hilke E. Schlichting, Leon K. Harding, Jennifer W. Milburn
Publikováno v:
The Astronomical Journal, Vol 166, Iss 6, p 242 (2023)
Occultations provide indirect sensitivity to the number density of small Kuiper Belt objects (KBOs) too faint to directly detect telescopically. We present results from the Caltech HI-speed Multicolor camERA (CHIMERA) survey with the Palomar Hale Tel
Externí odkaz:
https://doaj.org/article/d633f7102e814c02a5c1052901bbc787