GLOSTAR -- Radio Source Catalog I: $28^{\circ}< \textit{l} < 36^{\circ}$ and $|b| < 1^{\circ}$
S. N. X. Medina, J. S. Urquhart, S. A. Dzib, A. Brunthaler, B. Cotton, K. M. Menten, F. Wyrowski, H. Beuther, S. J. Billington, C. Carrasco-Gonzalez, T. Csenger… 展开作者
S. N. X. Medina, J. S. Urquhart, S. A. Dzib, A. Brunthaler, B. Cotton, K. M. Menten, F. Wyrowski, H. Beuther, S. J. Billington, C. Carrasco-Gonzalez, T. Csengeri, Y. Gong, P. Hofner, H. Nguyen, G. N. Ortiz-León, J. Ott, J. D. Pandian, N. Roy, E. Sarkar, Y. Wang, B. Winkel
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24 pages, 23 figures, Accepted by Astronomy & Astrophysics journal
The GLOSTAR survey will study the star formation in the Galactic plane between $-2^{\circ}< \textit{l}< 85^{\circ}$ and $|b| < 1^{\circ}$ with unprecedented sensitivity in both, flux density ($\sim$ 40 $μJy$ beam$^{-1}$) and range of angular scales ($\sim$ 1."5 to the largest radio structures in the Galaxy). In this paper we present the first results obtained from a radio continuum map of a 16 square degree sized region of the Galactic plane centered on $\textit{l} = 32^{\circ}$ and $b = 0^{\circ}$ ($28^{\circ} < \textit{l} < 36^{\circ}$ and $|b| < 1^{\circ}$). This map has a resolution of 18" and sensitivity of $\sim$ 60-150 $μJy$ beam$^{-1}$. We present data acquired with the VLA in D-configuration. Two 1 GHz wide sub-bands were observed simultaneously and centred at 4.7 and 6.9 GHz. These data were calibrated and imaged using the $\textit{Obit}$ software package. The source extraction has been performed using the BLOBCAT software package and verified through a combination of visual inspection and cross-matching with other radio and mid-infrared surveys. The final catalog consists of 1575 discrete radio sources and 27 large scale structures (including W43 and W44). By cross-matching with other catalogs and calculating the spectral indices ($S(ν) \propto ν^α$), we have classified 231 continuum sources as HII regions, 37 as ionization fronts, and 46 as planetary nebulae. The longitude and latitude distribution and negative spectral indices are all consistent with the vast majority of the unclassified sources being extragalactic background sources. We present a catalog of 1575 radio continuum sources and discuss their physical properties, emission nature and relation with previously reported. These first GLOSTAR results have increased the number of reliable HII regions in this part of the Galaxy by a factor of four.
A global view on star formation: The GLOSTAR Galactic plane survey. IX. Radio Source Catalog III: 2<l<28, 36<l<40, 56<l<60 and |b|<1, VLA B-configuration
A global view on star formation: The GLOSTAR Galactic plane survey. VI. Radio Source Catalog II: $28^\circ < \ell < 36^\circ$ and $|b| < 1^\circ$, VLA B-configuration
A global view on star formation: The GLOSTAR Galactic plane survey. XI. Radio source catalog IV: $2^\circ < \ell < 28^\circ$, $36^\circ < \ell < 60^\circ$ and $|b| < 1^\circ$
A global view on star formation: The GLOSTAR Galactic plane survey IV. Radio continuum detections of young stellar objects in the Galactic Centre region
中央分子带（CMZ）是银河系中心周围的一个$\sim$ 200 pc大小的区域，它的特殊之处在于它显示出恒星形成率（SFR）相对于可用的致密气体受到抑制。为了研究CMZ中的SFR，可以研究年轻恒星物体（YSO）。在这里，我们提出了334个2.2 $μ$ m红外源已被确定为YSO候选人的无线电观测。我们的目标是调查厘米波长的无线电连续对应的存在下，这个样本的YSO候选人，我们用来约束当前的SFR在CMZ。作为GLOSTAR巡天的一部分，获得了银河系中心的D型VLA数据，包括-2 $^{\circ}<l<$ 2 $^{\circ}$和-1 $^{\circ}<b<$ 1 $^{\circ}$，频率覆盖范围为4-8 GHz。我们根据选择标准将YSO与无线电连续源进行匹配，并将这些无线电源归类为潜在的HII区域，并确定其物理特性。在334个YSO候选者中，我们发现了35个无线电连续谱对应物。我们发现，94个YSO与密集的尘埃凝聚在870 $μ$米ATLASGAL调查，其中14个有一个GLOSTAR对应。在35个有射电对应的YSO中，根据它们的光谱指数和文献，有11个被确认为HII区。我们估计了他们的莱曼连续谱光子通量，以估计电离恒星的质量。将这些数据与已知来源结合起来，计算出CMZ现今的SFR为$\sim$ 0.068 M $_{\odot}$ yr $^{-1}$，是银河SFR的$\si…
A global view on star formation: The GLOSTAR Galactic plane survey XII. Effelsberg's continuum view and data release
Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；Purple Mountain Observatory, Chinese Academy of Sciences（中国科学院紫金山天文台）；National Radio Astronomy Observatory（国家射电天文台）；Center for Astrophysics | Harvard & Smithsonian（哈佛史密森尼天体物理中心）
The Rapid ASKAP Continuum Survey (RACS) VIII: total intensity and circular polarization images and catalogues at 887.5 MHz from RACS-low2
CSIRO Space and Astronomy（CSIRO空间与天文学）；Sydney Institute for Astronomy, School of Physics, The University of Sydney（悉尼大学物理学院悉尼天文研究所）；Australian SKA Regional Centre (AusSRC), Curtin University（科廷大学澳大利亚SKA区域中心）；SKA Observatory, SKA-Low Science Operations Centre（SKA天文台SKA低频科学运营中心）
Properties of Hi-GAL clumps in the inner Galaxy]{The Hi-GAL compact source catalogue. I. The physical properties of the clumps in the inner Galaxy ($-71.0^{\circ}< \ell < 67.0^{\circ}$)
The selection of LEGUE disk targets for LAMOST's pilot survey
我们描述了LAMOST试点调查，其目的是测试系统准备的LAMOST光谱调查的低纬度磁盘部分的目标选择算法。我们使用PPMXL（Roeser et al. 2010）天体测量星表，它提供了位置，自行，B/R/I星等（大部分）来自USNO-B（Monet et et al. 2003）和J/H/Ks来自两微米全天巡天（2 MASS，见Skrutskie et al. 2006）。我们选择了8个板块沿银河平面，在区域$0^\circ<α<67^\circ$和$42^\circ<δ<59^\circ$，其中包括22个已知的疏散星团的年龄范围。相邻的板块可能有小的重叠。每个板块覆盖一个半径为$2.5^\circ$的区域，中心恒星（对于夏克-哈特曼导向器）比$\sim8^{\rm th}$星等亮。对于每个板块，我们在PPMXL提供的震级范围$11.3<Imag<16.3$和$Bmag$中创建一个输入星表。选择星以满足光纤定位系统的要求，并且在$I$与$B-I$色星等图中具有均匀分布。我们最终的输入星表由8个板块上的12，000个天体组成，这些天体在中国国家天文台兴隆站的冬季观测季节可以观测到。
An Extensive Photometric Catalog of CALIFA Galaxies
在第三次数据发布（DR 3）中，我们为所有CALIFA星系提供了一个广泛的光度测定结构特性概要。我们利用斯隆数字巡天（SDSS）的图像，以提取一维（1D）的$gri$表面亮度轮廓的所有CALIFA DR 3星系。我们还推导出各种非参数量和参数模型拟合到一维i带配置文件。利用二维膨胀盘分解程序IMFIT和GALFIT对星系图像进行了分解。我们的1D和2D建模方法的相对性能和优点进行评估。在可能的情况下，我们比较和增强我们的光度与现有的测量文献。总体上与Walcher et al.（2014）和Ménel-Abreu et al.（2017）的研究非常一致，尽管存在一些显著差异。各种结构指标也突出了对一个独立的变量，如圆速度，他们的紧密分散。
A Catalog of Mid-infrared Variable Sources in the Ecliptic Poles
Yonsei University（延世大学）；Kavli Institute for Astronomy and Astrophysics, Peking University（北京大学卡尔·萨根天文与天体物理研究所）；Department of Astronomy, School of Physics, Peking University（北京大学物理学院天文学系）；Kyungpook National University（庆北国立大学）；Korea Astronomy and Space Science Institute (KASI)（韩国天文与空间科学研究所）
