Results 261 to 270 of about 1,344 (291)
Some of the next articles are maybe not open access.
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
openaire +2 more sources
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
openaire +1 more source
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
openaire +1 more source
Strong turbulence and atmospheric waves in stellar occultations
Icarus, 1983General techniques for producing model lightcurves for a variety of realistic atmospheric irregularities, including turbulence and inertia-gravity waves, are presented and applied. The restrictions of weak scintillation theory are relaxed and model lightcurves are constructed using wave optics for atmospheres with strong, anisotropic turbulence.
Richard G. French, Richard V.E. Lovelace
openaire +1 more source
Prospects of stellar occultations with robotic telescopes
Stellar occultations are influential for determining shapes, sizes, and rotation states, as well as characterizing the binary population, ring systems,and debris. Additionally, occultations are a source of high-precision astrometry.I will present a new project to implement a network of telescopes dedicated to observing stellar occultations by Solar ...Rodrigo Leiva +6 more
openaire +1 more source
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
openaire +1 more source
William Saunders, Kunio Sayanagi
openaire +1 more source
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
openaire +1 more source
Analysis of stellar occultation data
Icarus, 1978R.G. French, J.L. Elliot, P.J. Gierasch
openaire +1 more source
Studying Asteroids Via Stellar Occultations
There are over two million minor planets in the Solar System, which include the populations of asteroids, Kuiper Belt and trans-Neptunian objects, centaurs, and trojans, among others. These bodies frequently pass in front of stars, casting shadows across the surface of the Earth in events known as stellar occultations.openaire +1 more source
Assessment of the feasibility of space-based stellar occultation observations of Uranus and Neptune
Planetary and Space Science, 2022William R Saunders +2 more
exaly