Results 11 to 20 of about 373 (258)

Stellar occultations: a gateway to advances in planetary science. [PDF]

Philos Trans A Math Phys Eng Sci
Souami D, Sfair R, Renner S, El Moutamid M.   +3 more
europepmc   +4 more sources

Fluctuations of the Earth’s Rotation by Stellar Occultations [PDF]

Symposium - International Astronomical Union, 1990
Observations of lunar occultations made between 1800 and 1955 are analyzed in order to determine the fluctuations of the Earth's rotation before the International Atomic Time was established. The reduction is made on the basis of the DE200/LE200 ephemeris and the FK5 system.
C. Jordi, G. Rossello
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The Structure of Chariklo’s Rings from Stellar Occultations [PDF]

The Astronomical Journal, 2017
Abstract Two narrow and dense rings (called C1R and C2R) were discovered around the Centaur object (10199) Chariklo during a stellar occultation observed on 2013 June 3. Following this discovery, we planned observations of several occultations by Chariklo’s system in order to better characterize the physical properties of the ring and ...
Bérard, D., Sicardy, B., Camargo, J. I. B., Desmars, Josselin, Braga-Ribas, F., Ortiz, J.-L., Duffard, R., Morales, N., Meza, E., Leiva, R., Benedetti-Rossi, G., Vieira-Martins, R., Gomes Júnior, A.-R., Assafin, M., Colas, F., Dauvergne, J.-L., Kervella, P., Lecacheux, J., Maquet, L., Vachier, F., Renner, S., Monard, B., Sickafoose, A. A., Breytenbach, H., Genade, A., Beisker, W., Bath, K.-L., Bode, H.-J., Backes, M., Ivanov, V. D., Jehin, Emmanuel, Gillon, Michaël, Manfroid, Jean, Pollock, J., Tancredi, G., Roland, S., Salvo, R., Vanzi, L., Herald, D., Gault, D., Kerr, S., Pavlov, H., Hill, K. M., Bradshaw, J., Barry, M. A., Cool, A., Lade, B., Cole, A., Broughton, J., Newman, J., Horvat, R., Maybour, D., Giles, D., Davis, L., Paton, R. A., Loader, B., Pennell, A., Jaquiery, P.-D., Brillant, S., Selman, F., Dumas, C., Herrera, C., Carraro, G., Monaco, L., Maury, A., Peyrot, A., Teng-Chuen-Yu, J.-P., Richichi, A., Irawati, P., De Witt, C., Schoenau, P., Prager, R., Colazo, C., Melia, R., Spagnotto, J., Blain, A., Alonso, S., Román, A., Santos-Sanz, P., Rizos, J.-L., Maestre, J.-L., Dunham, D.   +81 more
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Detecting Interstellar Objects through Stellar Occultations [PDF]

The Astrophysical Journal Letters, 2020
Abstract Stellar occultations have been used to search for Kuiper Belt and Oort Cloud objects. We propose a search for interstellar objects based on the characteristic durations (∼0.1 s) of their stellar occultation signals and high inclination relative to the ecliptic plane.
Amir Siraj, Abraham Loeb
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Photographic Observation of Stellar Occultations [PDF]

International Astronomical Union Colloquium, 1988
Stellar occultations are usually observed visually, but this can also be done photographically. Our method has some advantages: –the obtained moments of contacts refer to the smoothed lunar limb,–the error in the determination of contacts is calculable,–the error may be less than in visual work,–the reduction of photographs is fast, due to the ...
A. Tomić, N. Čabrić, V. Čelebonović
openaire   +1 more source

An exploration of Pluto’s environment through stellar occultations [PDF]

Astronomy & Astrophysics, 2014
Context. Pluto has five known satellites with diameters ranging from ~1200 km down to ~40 km, a possible outcome of a collisional origin. Smaller objects probably exist and may maintain tenuous rings, thus representing hazards during the New Horizons flyby of July 2015. Aims. The goal is to provide an upper limit for the numbers of unseen small bodies
Boissel, Y., Sicardy, B., Roques, F., Gaulme, P., Doressoundiram, A., Widemann, T., Ivanov, V.D., Marco, O., Mason, E., Ageorges, N., Mousis, O., Rousselot, P., Dhillon, V. S., Littlefair, S. P., Marsh, T. R., Assafin, M., Ribas, F. Braga, Neto, D. da Silva, Camargo, J.I.B., Andrei, A., Martins, R. Vieira, Behrend, R., Kretlow, M.   +22 more
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Occultation portal: A web-based platform for data collection and analysis of stellar occultations

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACT Recording a stellar occultation is one powerful method that gives direct information about the physical properties of the occulting Solar system object. In order to obtain reliable and accurate results, simultaneous observations from different locations across-track of the projected path are of great importance.
Y Kilic, F Braga-Ribas, M Kaplan, O Erece, D Souami, M Dindar, J Desmars, B Sicardy, B E Morgado, M N Shameoni, F L Rommel, A R Gomes-Júnior   +11 more
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Terrestrial Atmospheric Composition from Stellar Occultations [PDF]

Science, 1972
Stellar ultraviolet light transmitted through the earth's upper atmosphere is strongly absorbed by ozone and molecular oxygen. The stellar ultraviolet photometers aboard the Orbiting Astronomical Observatory (OAO-2) satellite have measured the intensity changes of several stars during occultation of the star by the earth's atmosphere.
P B, Hays, R G, Roble, A N, Shah
openaire   +2 more sources

PLUTO’s ATMOSPHERE FROM STELLAR OCCULTATIONS IN 2012 AND 2013 [PDF]

The Astrophysical Journal, 2015
We analyze two multi-chord stellar occultations by Pluto observed on July 18th, 2012 and May 4th, 2013, and monitored respectively from five and six sites. They provide a total of fifteen light-curves, twelve of them being used for a simultaneous fit that uses a unique temperature profile, assuming a clear (no-haze) and pure N_2 atmosphere, but ...
Dias-Oliveira, A., Sicardy, B., Lellouch, E., Vieira-Martins, R., Assafin, M., Camargo, J., Braga-Ribas, F., Gomes-Júnior, A., Benedetti-Rossi, G., Colas, F., Decock, A., Doressoundiram, A., Dumas, C., Emilio, M., Fabrega Polleri, J., Gil-Hutton, R., Gillon, M., Girard, J., Hau, G., Ivanov, V., Jehin, E., Lecacheux, J., Leiva, R., Lopez-Sisterna, C., Mancini, L., Manfroid, J., Maury, A., Meza, E., Morales, N., Nagy, L., Opitom, C., Ortiz, J., Pollock, J., Roques, F., Snodgrass, C., Soulier, J., Thirouin, A., Vanzi, L., Widemann, T., Reichart, D., Lacluyze, A., Haislip, J., Ivarsen, K., Dominik, M., Jørgensen, U., Skottfelt, J.   +45 more
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Analysis of inversion error characteristics of stellar occultation simulation data

Earth and Planetary Physics, 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.
MingChen Sun, QingLin Zhu, Xiang Dong, JiaJi Wu   +3 more
doaj   +1 more source