IMAGING TECHNIQUES; NEPTUNE (PLANET); PLANETARY RINGS; STELLAR OCCULTATION; DATA REDUCTION; SPACE OBSERVATIONS (FROM EARTH); TELESCOPES
Abstract :
[en] A stellar occulation event of Neptune revealed a ring segment that was previously undetected. It appears that the object is not a complete ring, but rather a localized swarm of particles which follows a ring orbit over a limited range of longitudes. To avoid confusion with the standard use of the word ring it is suggested that the feature be called an arc. The distance of the arc zone is not precisely known because so far there has been no confirmed occultation by both an arc and the planet.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hubbard, W. B.; Observatoire de Paris
Brahic, A.; Observatoire de Paris
Bouchet, P.; European Southern Observatory, Santiago de Chile
Elicer, L. R.; Cerro Tololo Inter-American Observatory
Haefner, R.; Technische Univ., Munich
Manfroid, Jean ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)