论文标题
使用虚拟天文台发现POSS I中的消失对象
Discovering vanishing objects in POSS I red images using the Virtual Observatory
论文作者
论文摘要
在本文中，我们报告了使用虚拟天文台档案，工具和服务搜索POSS I的消失源。在VASCO项目的框架中进行的搜索旨在查找最近目录中不存在的POSS I（红色）源，例如Pan-Starrs DR2（限制幅度r = 21.4）或Gaia EDR3（限制幅度g = 21）。我们发现298 165个仅在POSS I中可见的来源，其中288 770在其他档案中的5个Arcsec内具有交叉匹配（主要是红外线），将189个分类为小行星，35个可变物体，3 592作为与第二个数字化的手工艺相比，即在不正确的（超级级别）和180上的动作，并将其与180置于180级。其余未识别的瞬态（5 399）以及在光学方面未检测到的172 163个来源可从虚拟遵守的符合天文台的档案中获得，并且可以在寻找强的M-warf耀斑的搜索方面具有兴趣，并可以搜索具有高度的超级nove，高级超级新星，高型超新星，小型小麻灵，或其他确定的红色瞬态。在消失之前，POSS-I和POSS-II都没有检测到任何点的来源，在70年中，以银河系的失败率将失败的超新星设定为不到十亿分之一。
In this paper we report a search for vanishing sources in POSS I red images using Virtual Observatory archives, tools and services. The search, conducted in the framework of the VASCO project, aims at finding POSS I (red) sources not present in recent catalogues like Pan-STARRS DR2 (limiting magnitude r=21.4) or Gaia EDR3 (limiting magnitude G=21). We found 298 165 sources visible only in POSS I plates, out of which 288 770 had a crossmatch within 5 arcsec in other archives (mainly in the infrared), 189 were classified as asteroids, 35 as variable objects, 3 592 as artefacts from the comparison to a second digitization (Supercosmos), and 180 as high proper motion objects without information on proper motion in Gaia EDR3. The remaining unidentified transients (5 399) as well as the 172 163 sources not detected in the optical but identified in the infrared regime are available from a Virtual Observatory compliant archive and can be of interest in searches for strong M-dwarf flares, high-redshift supernovae, asteroids, or other categories of unidentified red transients. No point sources were detected by both POSS-I and POSS-II before vanishing, setting the rate of failed supernovae in the Milky Way during 70 years to less than one in one billion.
