首页 | 本学科首页   官方微博 | 高级检索  
     检索      


FAUST observations near the North Galactic Pole
Authors:Noah Brosch  Elchanan Almoznino  Dieter Engels  Stuart Bowyer  Michael Lampton
Institution:The Wise Observatory and the School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel;Hamburger Sternwarte, Gojenbergsweg 112, D-21029 Hamburg, Germany;Space Sciences Laboratory and Center for EUV Astrophysics, University of California, Berkeley, CA 94720, USA
Abstract:We analyse a UV observation with FAUST in the direction of the North Galactic Pole. The region includes a cirrus cloud (G251.2+73.3) and a dark globule, and the FAUST image contains 75 UV sources. We discuss the UV source detection and their identification with optical counterparts. We use, for the first time, low-resolution spectral information as the primary means of identifying possible optical counterparts. This is complemented, and sometimes modified, by optical information available from existing data bases. The results are interpreted with the help of maps of the distribution of far-infrared emission and of the neutral hydrogen gas. We discuss the types of objects found, the degree of matching with the predictions of our UV Galaxy model, and the general behaviour of the Galactic UV extinction in this Milky Way part. We compare the UV results for this region with similar observations in the same neighbourhood, which are less affected by dust, and attempt to explain the peculiar distribution of UV magnitudes as a result of a peculiar distribution of foreground dust, which does not follow the accepted dust-to-gas relation.
Keywords:ultraviolet: galaxies  ultraviolet: stars
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号