FAUST observations near the North Galactic Pole

Citation
N. Brosch et al., FAUST observations near the North Galactic Pole, M NOT R AST, 316(1), 2000, pp. 58-70
Citations number
21
Categorie Soggetti
Space Sciences
Journal title
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN journal
00358711 → ACNP
Volume
316
Issue
1
Year of publication
2000
Pages
58 - 70
Database
ISI
SICI code
0035-8711(20000721)316:1<58:FONTNG>2.0.ZU;2-S
Abstract
We analyse a UV observation with FAUST in the direction of the North Galact ic Pole. The region includes a cirrus cloud (G351.2+73.3) and a dark globul e, and the FAUST image contains 75 UV sources. We discuss the UV source det ection and their identification with optical counterparts. We use, for the first time, low-resolution spectral information as the primary means of ide ntifying possible optical counterparts. This is complemented, and sometimes modified, by optical information available from existing data bases. The r esults are interpreted with the help of maps of the distribution of far-inf rared emission and of the neutral hydrogen gas. We discuss the types of obj ects found, the degree of matching with the predictions of our UV Galaxy mo del, and the general behaviour of the Galactic UV extinction in this Milky Way part. We compare the UV results for this region with similar observatio ns 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 pecu liar distribution of foreground dust, which does not follow the accepted du st-to-gas relation.