Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Fouquet, Sylvain"'
Publikováno v:
Proc. IAU 14 (2018) 62-65
Prolate rotation (i.e. rotation around the long axis) has been reported for two Local Group dwarf galaxies: Andromeda II, a dwarf spheroidal satellite of M31, and Phoenix, a transition type dwarf galaxy. The prolate rotation may be an exceptional ind
Externí odkaz:
http://arxiv.org/abs/1809.04653
We analyze in detail the spatial distribution and kinematic properties of two different stellar populations in Andromeda II (And II) dwarf spheroidal galaxy. We obtained their detailed surface density maps, together with their radial density profiles
Externí odkaz:
http://arxiv.org/abs/1611.08446
Andromeda II (And II) has been known for a few decades but only recently observations have unveiled new properties of this dwarf spheroidal galaxy. The presence of two stellar populations, the bimodal star formation history (SFH) and an unusual rotat
Externí odkaz:
http://arxiv.org/abs/1606.09259
Autor:
Lokas, Ewa L., Ebrova, Ivana, del Pino, Andres, Sybilska, Agnieszka, Athanassoula, E., Semczuk, Marcin, Gajda, Grzegorz, Fouquet, Sylvain
Publikováno v:
ApJ, 826, 227 (2016)
Using N-body simulations we study the formation and evolution of tidally induced bars in disky galaxies in clusters. Our progenitor is a massive, late-type galaxy similar to the Milky Way, composed of an exponential disk and an NFW dark matter halo.
Externí odkaz:
http://arxiv.org/abs/1601.07433
Autor:
Fouquet, Sylvain
La découverte de l'expansion de l'univers par Edwin Hubble en 1929 et l'étude de modèles cosmologiques ont retiré à l'univers son image statique et infinie; l'univers évolue depuis plus de 13 milliards d'années, depuis le Big Bang. Le m
Externí odkaz:
http://tel.archives-ouvertes.fr/tel-00975096
http://tel.archives-ouvertes.fr/docs/00/97/50/96/PDF/These_Fouquet.pdf
http://tel.archives-ouvertes.fr/docs/00/97/50/96/PDF/These_Fouquet.pdf
Autor:
Pawlowski, Marcel S., Famaey, Benoit, Jerjen, Helmut, Merritt, David, Kroupa, Pavel, Dabringhausen, Jörg, Lüghausen, Fabian, Forbes, Duncan A., Hensler, Gerhard, Hammer, François, Puech, Mathieu, Fouquet, Sylvain, Flores, Hector, Yang, Yanbin
Both major galaxies in the Local Group host planar distributions of co-orbiting satellite galaxies, the Vast Polar Structure (VPOS) of the Milky Way and the Great Plane of Andromeda (GPoA). The $\Lambda$CDM cosmological model did not predict these fe
Externí odkaz:
http://arxiv.org/abs/1406.1799
Autor:
Yang, Yanbin, Hammer, Francois, Fouquet, Sylvain, Flores, Hector, Puech, Mathieu, Pawlowski, Marcel S., Kroupa, Pavel
The Milky Way (MW) dwarf spheroidal (dSph) satellites are known to be the most dark-matter (DM) dominated galaxies with estimates of dark to baryonic matter reaching even above one hundred. It comes from the assumption that dwarfs are dynamically sup
Externí odkaz:
http://arxiv.org/abs/1405.2071
Autor:
Hammer, François, Yang, Yanbin, Fouquet, Sylvain, Pawlowski, Marcel S., Kroupa, Pavel, Puech, Mathieu, Flores, Hector, Wang, Jianling
The recent discovery by Ibata et al. (2013) of a vast thin disk of satellites (VTDS) around M31 offers a new challenge for the understanding of the Local Group properties. This comes in addition to the unexpected proximity of the Magellanic Clouds (M
Externí odkaz:
http://arxiv.org/abs/1303.1817
The Milky Way (MW) dwarf system presents two exceptional features, namely it forms a thick plane called the Vast Polar Structure (VPOS), and the two biggest dwarves, the Magellanic Clouds (MCs), are irregular galaxies that are almost never seen at su
Externí odkaz:
http://arxiv.org/abs/1211.4583
The Local Group is often seen to be a quiescent environment without significant merger events. However an ancient major merger may have occurred in the most massive galaxy. Numerical simulations have shown that tidal tails formed during gas-rich majo
Externí odkaz:
http://arxiv.org/abs/1209.4077