Galaxies相关论文
We present simultaneous observations of 12CO, 13CO and C180 J=1-0emission in 11 nearby (cz＜1000 km s-1) bright infrared g......
New background quasars in the vicinity of the Andromeda Galaxy discovered with the Guoshoujing Teles
We present preliminary analyses of spectra of quasar candidates in two Guoshoujing Telescope (GSJT, formerly named the L......
By analyzing Chandra X-ray data of a sample of 21 galaxy groups and 19galaxy clusters,we find that in 31 sample systems ......
We make use of the images from the Sloan Digital Sky Survey Stripe 82 (Stripe 82) to present an analysis of r band surfa......
Based on the coexistence of the Blandford-Znajek and magnetic coupling processes in black hole (BH)accretion disc, a mul......
Possible γ-ray emission of radio intermediate AGN Ⅲ Zw 2 and its implication on the evolution of jet
AGNs with hard γ-ray emission identified so far are radio-loud. Ⅲ Zw 2 is a radio intermediate AGN with a relativistic......
We collect a sample of 381(271 type Ⅰ)active galactic nuclei(AGNs)with XMM-Newton observations for an analysis of the d......
We study the ages of a large sample (1802) of nearly face-on disk low sur-face brightness galaxies (LSBGs) using the evo......
We analyze the optical spectrum of type 1 QSO SDSS J1425+3231. This object is interesting since its narrow emission line......
Flux-limited and volume-limited galaxy samples are constructed from theSloan Digital Sky Survey (SDSS) data releases DR4......
We study the regular or chaotic character of orbits in a 3D dynamical model,describing a triaxu1 galaxy surrounded by a ......
The external Compton (EC) model is used to study the high energy emission of some blazars,in which the external photon f......
We test the distance-duality (DD) relation by combining the angular diameter distance DA provided by two galaxy cluster ......
We report the discovery of a broad absorption line (BAL) of ～104 km s-1in width in the previously known BL Lac object PKS......
We identify new strong lensing clusters of galaxies from the Sloan Digital Sky Survey Ⅲ (SDSS DR8) by visually inspecti......
We report the discovery of Balmer broad absorption lines (BALs) in the quasar LBQS 1206+1052 and present a detailed anal......
Clusters of galaxies are the most massive objects in the Universe and precise knowledge of their mass structure is impor......
观测显示星系中的大部分恒星是双星，因此星族合成研究必须考虑双星的作用。综述双星对星族合成研究的重要性。主要讨论了双星对早型......
使用了针对非均匀采样时间序列优化的小波变换方法，对密歇根大学射电天文台（UMRAO：the Univerity of Michigan Radio Astronomy Obser......
经典和近些年的深度Blazar巡天都表明Radio-X-ray谱指数αrx与同步辐射峰频υpeak有很好的反相关性,但后者却显示出对给定的υpeak......
A tight correlation between γ-ray and radio emission is found for a sample of BL Lacertae(BL Lac) objects detected by t......
通过对团星系和场星系的聚度参数、特征恒星形成率、星系中包含的恒星质量、金属丰度等物理参量的比较,研究了处在不同引力环境中......
采用活动星系核图像的核球／盘分解数据得到核球R波段光度值，计算了一个X射线活动星系核样本的中心大质量黑洞质量与核球质量之比（Mhh／M......
通过有关文献收集了天体AO 0235+164的光学B波段的资料,用Jurkevich方法讨论了其周期性,并采用几种方法(离散相关函数(DCF)法,Mont......
光学、近红外、红外、紫外、射电等波段及CO的观测研究表明,低面亮度星系是相对没有充分演化的系统,气体成分比例较高,金属丰度和......
作为本星系群中的旋涡星系之一，M33（NGC598）是验证星系化学演化理论不可多得的目标，因为它具有适当的距离和角直径，使得现今对其气体、......
双星星族光谱拟合的实质是在双星星族理论光谱库对应的参数空间进行搜索,通过最小二乘法找到与被拟合观测光谱最相近的理论光谱。......
收集了69个费米甚高能γ射线(TeV)耀变体样本的平均态多波段数据,并用对数抛物线模型(The Log-parabolic Model)对能谱分布(The Sp......
将基于多重信号分类的MUSIC谱估计算法引入BLLac天体光变周期分析中．给出了MUSIC算法的基本原理，利用模拟信号检测了算法的频谱分辨......
<正>The geometry of broad-line regions (BLRs) in active galactic nuclei (AGNs) is still controversial. We use a sample o......
