-
Article
Author Correction: A dense ring of the trans-Neptunian object Quaoar outside its Roche limit
-
Article
A dense ring of the trans-Neptunian object Quaoar outside its Roche limit
Planetary rings are observed not only around giant planets1, but also around small bodies such as the Centaur Chariklo2 and the dwarf planet Haumea3. Up to now, all known dense rings were located close enough to ...
-
Article
The size, shape, density and ring of the dwarf planet Haumea from a stellar occultation
Observations of a stellar occultation of Haumea, one of the four known trans-Neptunian dwarf planets, constrain its size, shape and density, and reveal a ring coplanar with Haumea’s largest moon.
-
Article
Instrumental methods for professional and amateur collaborations in planetary astronomy
Amateur contributions to professional publications have increased exponentially over the last decades in the field of planetary astronomy. Here we review the different domains of the field in which collaborati...
-
Article
A ring system detected around the Centaur (10199) Chariklo
Observations of a stellar occultation by (10199) Chariklo, a minor body that orbits the Sun between Jupiter and Neptune, reveal that it has a ring system, a property previously observed only for the four giant...
-
Article
Albedo and atmospheric constraints of dwarf planet Makemake from a stellar occultation
The icy dwarf planet Makemake has projected axes of 1,430 ± 9 and 1,502 ± 45 km and a V-band geometric albedo larger than Pluto’s but smaller than Eris’s, with no global Pluto-like atmosphere.
-
Article
A Pluto-like radius and a high albedo for the dwarf planet Eris from an occultation
Four trans-Neptunian objects are currently recognized as dwarf planets: Eris, Haumea, Makemake and Pluto. Of these, the 'demoted' planet Pluto has been studied for many years and has a detected atmosphere. The...
-
Article
Deep winds beneath Saturn’s upper clouds from a seasonal long-lived planetary-scale storm
Six Great White Spot (GWS) events have been observed in the atmosphere of Saturn since 1876. These giant convective storms occur roughly once every Saturnian year (equal to 29.5 Earth years). The sixth GWS eru...
-
Chapter
Manipulations sacro-iliaques
Il existe de nombreuses techniques pour manipuler les articulations sacro-iliaques et celle qui est proposée ici est le résultat d’un choix. Mais, quelle que soit la technique utilisée, la manipulation est une...
-
Chapter
Examen programmé du bassin
Structurer un examen programmé du bassin permet de dégager un algorithme diagnostic qui peut faciliter et optimiser l’examen clinique.
-
Chapter
Examen programmé du cou
Le cahier des charges imposé à ce segment rachidien est particulièrement difficile: il faut porter la tête tout en assurant son importante mobilité et protéger le transit de l’artère vertébrale. Ces impératifs...
-
Chapter
L’examen du lombalgique par le médecin de médecine manuelle ostéopathique
L’examen clinique de médecine manuelle ostéopathique (MMO) répond à une démarche médicale sous-tendue par une sémiologie particulière. Lorsqu’elle est maîtrisée et scrupuleusement reproduite, cette sémiologie ...
-
Article
Charon's size and an upper limit on its atmosphere from a stellar occultation
Stellar occultations, when a Solar System object passes between us and a star and blocks its light, are eagerly awaited by astronomers as they provide a chance to make measurements that are not normally possib...
-
Article
Large changes in Pluto's atmosphere as revealed by recent stellar occultations
Pluto's tenuous nitrogen atmosphere was first detected by the imprint left on the light curve of a star that was occulted by the planet in 1985 (ref. 1), and studied more extensively during a second occultation e...
-
Chapter and Conference Paper
Observations of Interactions between Giant Vortices in the Atmosphere of Jupiter: 1997–2000
We present a comparative observational perspective of unique phenomena that took place in recent years: the interaction and merger between the largest vortices present in the atmosphere of Jupiter.
-
Article
An Overview of Saturn's Equatorial Storms: 1990 - 1997
We present an overview of the studies we have performed of the unusual storm activity that is occurring in the Equatorial Zone (EZ) of Saturn since 1990 based on a long-term CCD imaging (261-953 nm).
-
Article
The Rotational Parameters Of Hale–Bopp (C/1995 O1) From Observations Of The Dust Jets At Pic Du Midi Observatory
We observed comet Hale-Bopp (C/1995 O1) at Pic du Midi Observatory in 1997 from February 2.24 UT to March 31.89 UT with the 1.05-m telescope equipped with a CCD camera and broad- and narrow-band IHW filters. A...
-
Article
Inner part observation of theβ pictoris disk
The inner regions of the circumstellar disk aroundβ Pictoris might be dust-free due to a possible planet which may have cleared up dust particles. We present a new observational technique based on the use of an a...
-
Chapter and Conference Paper
Inner Part Observation of the β Pictoris Disk
The inner regions of the circumstellar disk around β Pictoris might be dust-free due to a possible planet which may have cleared up dust particles. We present a new observational technique based on the use of ...
-
Article
The Great White Spot and disturbances in Saturn's equatorial atmosphere during 1990
A giant storm, the Great White Spot, erupted at the end of September 1990 as a localized, bright cloud system close to Saturn's equator. Its evolution produced a complex planetary disturbance which affected th...
