Igor D. Karachentsev, Dmitry I. Makarov, Elena I. Kaisina
备注:
6 tables, 20 figures. The electronic version of tables as well as the article with figures in high resolution are available at the Local Volume Galaxies database web-page http://www.sao.ru/lv/lvgdb/
我们提供了一个包含869个邻近星系的全天星表,这些星系的个体距离估计值在11 Mpc以内,或经校正的径向速度V_{LG} < 600 km/s。该星表是Karachentsev et al.(2004)的“邻星系表”的更新和扩展版本。它收集星系的下列观测数据:角直径、FUV、B和K_s波段的视星等、H_alpha和HI通量、形态类型、HI线宽、径向速度和距离估计。在这个本地体积(LV)样本中,108个矮星系仍然没有测量径向速度。该目录还计算了全球星系参数:线性Holmberg直径,绝对B-星等,表面亮度,HI-质量,通过K-波段光度估计的恒星质量,HI旋转速度校正星系倾角,指示质量内Holmberg半径,和三种“潮汐指数”,量化局部密度环境。该星表补充了基于本星系的数据(http://www.sao.ru/lv/lvgdb),其中提供了它们的光学和可用的H_alpha图像,以及其他服务。我们简要地讨论了哈勃流的LV内,不同的标度关系,在他们的星系结构和全球性的恒星形成的特点。我们还跟踪的行为,平均恒星质量密度,高质量密度和恒星形成率密度在考虑的体积。
英文摘要:
We present an all-sky catalog of 869 nearby galaxies, having individual distance estimates within 11 Mpc or corrected radial velocities V_{LG} < 600 km/s. The catalog is a renewed and expanded version of the "Catalog of Neighboring Galaxies" by Karachentsev et al. (2004). It collects data on the following observables for the galaxies: angular diameters, apparent magnitudes in FUV-, B-, and K_s- bands, H_alpha and HI fluxes, morphological types, HI-line widths, radial velocities and distance estimates. In this Local Volume (LV) sample 108 dwarf galaxies remain to be still without measured radial velocities.
The catalog yields also calculated global galaxy parameters: linear Holmberg diameter, absolute B-magnitude, surface brightness, HI-mass, stellar mass estimated via K-band luminosity, HI rotational velocity corrected for galaxy inclination, indicative mass within the Holmberg radius, and three kinds of "tidal index", which quantify the local density environment. The catalog is supplemented with the data based on the local galaxies (http://www.sao.ru/lv/lvgdb), which presents their optical and available H_alpha images, as well as other service.
We briefly discuss the Hubble flow within the LV, and different scaling relations that characterize galaxy structure and global star formation in them. We also trace the behavior of the mean stellar mass density, HI-mass density and star formation rate density within the considered volume.
Parameter estimation for the GWTC-4.0 catalog with phenomenological waveform models that include orbital eccentricity and an updated description of spin precession
Universitat de les Illes Balears(巴利阿里群岛大学);Institut de Ciències de l’Espai (ICE, CSIC)(空间科学研究所)
Constructing a Mock Galaxy Catalog for the All-sky SPECtroscopic Survey of Nearby Galaxies (A-SPEC) Using the Machine-assisted Semi-Simulation Model
Seoul National University(首尔大学);Institute for Data Innovation in Science, Seoul National University(首尔大学数据创新科学研究所);NSF-Simons AI Institute for the Sky (SkAI)(美国国家科学基金会-西蒙斯天空人工智能研究所);SNU Astronomy Research Center, Seoul National University(首尔大学天体物理学研究中心);Korea Astronomy and Space Science Institute(韩国天文与空间科学研究院);Center for Theoretical Physics, Department of Physics and Astronomy, Seoul National University(首尔大学物理与天文学系理论物理中心);Korea Institute for Advanced Study(韩国高等科学研究院)
UV to FIR catalogue of a galaxy sample in nearby clusters: SEDs and environmental trends
本文介绍了一个致力于研究环境对恒星形成活动影响的星系团样本。这类星系分布在星系团中,显示出丰富的特征多样性,SDSS-DR 6观测到了M_B ~ -18,GALEX AIS观测到了相当于几百万秒差距的天区。我们将从紫外到远红外的宽波段和发射线通量分配给每个星系,进行精确的光谱能量分布,以进行光谱拟合分析。星系团遵循一般的X射线光度与速度色散的关系,即L_X/sigma_c ^[4.4]。对星系密度分布的分析表明:(1)在密度分布的高密度部分,维里区和星系团外围有一个共同的范围;这可以归因于在维里区周围存在大质量星系结构(2)大质量星系团(sigma_c>550 km s^-1)的维里区呈现出一种Sigma_5分布,这种分布与相应的低质量星系团(sigma_c<550 km s ^-1)的维里区在统计上是可区分的(~96%)。大质量和低质量的星系团都遵循类似的密度-半径趋势,但低质量的星系团避免了高密度的极端。我们说明,与阿贝尔1185,星系人口的环境趋势。天空投影的星系密度图显示了低光度恒星形成星系是如何沿着比巨型星系更多的扩展结构分布的,而低光度被动星系则避开了低密度环境。巨大的被动星系和恒星形成星系共享相当相似的天空区域,被动星系表现出更集中的分布。