Results 231 to 240 of about 346 (266)
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Probing Titan's atmosphere by stellar occultation
Nature, 1990WE report results from the first stellar occultation by Titan ever observed. As predicted by Wasserman1, on 3 July 1989 the bright star 28 Sagittarii (visual magnitude, V ≈ 5.5), passed behind Saturn's giant moon ( V ≈ 8.3), which is the only body in the Solar System that, like the Earth, has a dense, nitrogen-rich atmosphere2.
Sicardy, B. +16 more
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Asteroid albedos deduced from stellar occultations
Icarus, 2006Albedos for 57 asteroids were determined using diameters obtained from stellar occultations. For 18 objects, the occultation albedos were determined to accuracies better than 5%. The effect on the occultation albedo due to errors in the asteroid absolute magnitude is discussed and correlations between the occultation albedos and IRAS and polarimetric ...
V SHEVCHENKO, E TEDESCO
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PROBING PLANETARY ATMOSPHERES WITH STELLAR OCCULTATIONS
Annual Review of Earth and Planetary Sciences, 1996▪ Abstract Earth-based stellar occultations probe the temperature, pressure, and number-density profiles of planetary atmospheres in the microbar range with a vertical resolution of a few kilometers. Depending on the occultation data available for a given body and other information, the technique also allows determination of local density variations,
J. L. Elliot, C. B. Olkin
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Tomographic Inversion of Stellar Occultation Measurements
Optical Remote Sensing of the Atmosphere, 1993We have studied the possibilities of the stellar occultation method in monitoring the global distribution of stratospheric ozone. In this paper we discuss the tomographic inversion problem of stellar occultations. We present different techniques and compare them using the characteristic properties of GOMOS instrument.
Johanna Tamminen +4 more
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Uranus Upper-Atmospheric Temperatures From Stellar Occultations
2022<p><strong>Background: </strong>The atmospheres of Uranus and Neptune are the most poorly constrained fluid atmospheres in the solar system. The ice giants were only visited, briefly, by the Voyager 2 spacecraft in the late 1980s.
William Saunders +3 more
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Background: UV occultations measured by Voyager 2 (V2) during its flyby of Uranus in 1986 detected a warm stratosphere and extremely hot thermosphere [1,2], far in excess of solar irradiance [3,4] or internal heating [5]. These measurements imply that Uranus has the coldest lower stratosphere and yet the hottest thermosphere of any Solar System planet [
William Saunders, Kunio Sayanagi
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William Saunders, Kunio Sayanagi
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Asteroid sizes determined with stellar occultations
Context Asteroid sizes, even for large objects are surprisingly poorly determined. As the MP3C database (https://mp3c.oca.eu/) shows, many objects in the range of a few tens of km to 100 km have diameter determinations ...Anna Marciniak +3 more
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Exploring the Solar System using stellar occultations
Proceedings of the International Astronomical Union, 2017AbstractStellar occultations by solar system objects allow kilometric accuracy, permit the detection of tenuous atmospheres (at nbar level), and the discovery of rings. The main limitation was the prediction accuracy, typically 40 mas, corresponding to about 1,000 km projected at the body.
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Analysis of stellar occultation data
Icarus, 1978R.G. French, J.L. Elliot, P.J. Gierasch
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
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