...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Astrophysical Journal. Supplement Series >AREAcat: A Tool to Compute Area Coverage of GALEX UV GUVcat and BCScat, SDSS, PanSTARRS, and Gaia Source Catalogs in Chosen Sky Regions
【24h】

AREAcat: A Tool to Compute Area Coverage of GALEX UV GUVcat and BCScat, SDSS, PanSTARRS, and Gaia Source Catalogs in Chosen Sky Regions

机译：AreaCAT：计算Galex UV Guvcat和BCSCAT，SDSS，Panstarrs和盖亚源目录中的区域覆盖的工具

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We present AREAcat, an interactive online tool to compute the area mapped by recent catalogs that cover most of the sky, but not contiguously, such as the Galaxy Evolution Explorer (GALEX) ultraviolet (UV) source catalogs GUVcat_AIS. Constructed from less than or similar to 600 million measurements by removing duplicate measurements of the same source in repeated observations, and sources in field rims, GUVcat_AIS contains photometry in FUV (lambda(eff) similar to 1528 angstrom) and NUV (lambda(eff) similar to 2310 angstrom) of similar to 83 million UV sources. When the surface density of a given class of objects is of interest, the actual area covered by the catalogs used in the source selection must be calculated, taking into account overlap among repeated observations and gaps between pointings. We developed a tool to calculate the area covered in any chosen region of the sky by GUVcat, as well as by the Sloan Digital Sky Survey data release 14 (SDSS DR14), the Panoramic Survey Telescope and Rapid Response System (PanSTARRS) PS1 3 pi, Gaia DR2, and their overlap with GUVcat. The desired sky region can be specified in either Galactic (l, b) or equatorial (alpha, delta) coordinates. GUVcat flags sources within the footprint of extended objects, such as nearby large galaxies or Galactic stellar clusters, where the photometry of individual point-like sources is often compromised by crowding or by the underlying galaxy light. For statistical studies of clean samples over large areas, the sources within such extended objects can be excluded using the appropriate GUVcat flags; the corresponding regions can then be excised from the area estimate in AREAcat.
机译：我们呈现AreadCAT，一个互动在线工具，用于计算涵盖大部分天空的最近目录映射的区域，但不是连续的，例如Galaxy Evolution Explorer（Galex）紫外线（UV）源目录Guvcat_ais。通过在反复观察中除去相同源的重复测量来构造少于或类似于600百万测量，并且在现场轮辋中的源极，GUVCAT_AIS在FUV（Lambda（EFF）类似于1528埃）和NUV（Lambda（EFF）中的光度测量类似于2310埃），类似于8300万UV来源。当给定类对象的表面密度感兴趣时，必须计算在源选择中使用的目录所涵盖的实际面积，考虑到重复观察结果和朝向之间的间隙之间的重叠。我们开发了一个工具来计算Guvcat的任何选择的天空区域所涵盖的区域，以及Sloan Digital Sky Survey数据版本14（SDSS DR14），全景调查望远镜和快速响应系统（Panstarrs）PS1 3 PI ，盖亚dr2，及其与guvcat的重叠。所需的天空区域可以在半乳扁（L，B）或赤道（Alpha，Delta）坐标中指定。 Guvcat旗帜在扩展物体的占地面积内的来源，例如附近的大型星系或银河系恒星簇，其中各个点状源的测光通常通过拥挤或由底层的星系光而受到损害。对于大区域的清洁样品的统计研究，可以使用适当的Guvcat标志排除这种延伸对象内的源;然后可以从区域诊断中从区域估计中切除相应的区域。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号