搜索结果: 1-9 共查到“天体物理学 M31”相关记录9条 . 查询时间(0.234 秒)
2017年2月23日，天体物理学杂志（ The Astrophysical Journal）刊登了一项重要研究成果：费米国际高能卫星大面积望远镜Fermi LAT 国际合作组发现仙女座星系（M31）中疑似暗物质的神秘伽玛辐射。该工作由 Fermi LAT 国际合作组成员中国科学院云南天文台侯贤副研究员和法国国家科研中心、图卢兹天体物理和行星研究所Pierrick Martin研究员共同领导，云南天...
郭守敬望远镜（LAMOST）于2010至2011年期间开展了M31、M33及其临近区域的背景类星体搜寻工作。通过对LAMOST性能测试和先导巡天取得的数据进行研究分析，中心工作人员霍志英等人在M31、M33及其临近区域约135平方度天区内新发现500多颗背景类星体，是目前我国天文学家利用自主设备在该天区发现的世界上数目最大的类星体样本。
The Stellar Archeology of the M33 Disk: Recent Star-Forming History and Constraints on the Timing of an Interaction with M31
galaxies evolution — galaxies spiral — galaxies
2011/8/24
Images recorded with MegaCam are used to investigate the recent star-forming history (SFH) of the Local Group Sc galaxy M33. The properties of the stellar disk change near R = 8 kpc. Within this radiu...
Discovery of the first methanol (CH3OH) maser in the Andromeda galaxy (M31)
the first methanol the Andromeda galaxy
2011/1/10
We present the first detection of a 6.7 GHz Class II methanol (CH3OH) maser in the Andromeda galaxy (M31). The CH3OH maser was found in a Very Large Array (VLA) survey during the fall of 2009. We have...
The kinematic identification of a thick stellar disc in M31
The kinematic identification stellar disc
2011/1/11
Submitted on 25 Oct 2010 (v1), last revised 21 Dec 2010 (this version, v2))
Abstract: We present the first characterization of a thick disc component in the Andromeda galaxy (M31) using kinematic dat...
Star Clusters in M31: Old Clusters with Bar Kinematics
catalogs – galaxies individual (M31) – galaxies star clusters – globular clusters
2010/11/12
We analyze our accurate kinematical data for the old clusters in the inner regions of M31. These velocities are based on high S/N Hectospec data (Caldwell et al 2010). The data are well suited for ana...
A survey of diffuse interstellar bands in the Andromeda galaxy: optical spectroscopy of M31 OB stars
dust extinction – galaxies individual (M31) – galaxies ISM – ISM H ii regions – ISM
2010/11/10
We present the largest sample to-date of intermediate-resolution blue-to-red optical spectra of B-type supergiants in M31 and undertake the first survey of diffuse interstellar bands (DIBs) in this ga...
The Murmur of The Hidden Monster: Chandra's Decadal View of The Super-massive Black Hole in M31
galaxies individual (M 31) – galaxies nuclei – X-rays galaxies
2010/11/11
The Andromeda galaxy (M31) hosts a central super-massive black hole (SMBH), known as M31∗, which is remarkable for its mass (108 M⊙) and extreme radiative quiescence. Over the past decade, the ...
The numerous streams in the M31 halo are currently assumed to be due to multiple minor mergers. Here we use the GADGET2 simulation code to test whether M31 could have experienced a major merger in its...