搜索结果: 1-7 共查到“银河系结构与运动 Cluster”相关记录7条 . 查询时间(0.175 秒)
Manganese evolution in Omega Centauri: a clue to the cluster formation mechanisms?
nuclear reactions nucleosynthesis abundances – galaxies: evolution – globular clusters: individual: ω Centauri
2011/10/18
We model the evolution of manganese relative to iron in the progenitor system of the globular cluster Omega Centauri by means of a self-consistent chemical evolution model. We use stellar yields that ...
Evolution of Super Star Cluster Winds with Strong Cooling
Evolution Super Star Cluster Winds Strong Cooling
2011/10/18
We study the evolution of Super Star Cluster (SSC) winds driven by stellar winds and supernova (SN) explosions. Time-dependent rates at which mass and energy are deposited into the cluster volume, as ...
Two O2 If*/WN6 stars possibly ejected from the massive young Galactic cluster Westerlund 2
Stars: individual:WR20aa - Stars: individual:WR20c - Stars:Wolf-Rayet (Galaxy): open clusters and associations: individual:Westerlund 2
2011/10/19
In this paper we report the identification of two new Galactic O2 If*/WN6 stars (WR20aa and WR20c), in the outskirt of the massive young stellar cluster Westerlund 2. The morphological similarity betw...
The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54
The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54
2011/10/13
Ibata et al. reported evidence for density and kinematic cusps in the Galactic globular cluster M54, possibly due to the presence of a 9400 solar-mass black hole. Radiative signatures of accretion ont...
Segue 3: An Old, Extremely Low luminosity Star Cluster in the Milky Way's Halo
Extremely luminosity Star Cluster Milky Way
2011/10/10
We investigate the kinematic and photometric properties of the Segue 3 Milky Way companion using Keck/DEIMOS spectroscopy and Magellan/IMACS g and r-band imaging. Using maximum likelihood methods to a...
The non-segregated population of blue straggler stars in the remote globular cluster Palomar 14
non-segregated population straggler stars remote globular cluster
2011/9/27
We used deep wide-field observations obtained with the Canada-France-Hawaii Telescope to study the blue straggler star (BSS) population in the innermost five arcminutes of the remote Galactic globular...