900-1200 angstrom interstellar extinction in the Galaxy, large Magellanic Cloud, and small Magellanic Cloud

Citation
Jb. Hutchings et J. Giasson, 900-1200 angstrom interstellar extinction in the Galaxy, large Magellanic Cloud, and small Magellanic Cloud, PUB AST S P, 113(788), 2001, pp. 1205-1209
Citations number
8
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN journal
0004-6280 → ACNP
Volume
113
Issue
788
Year of publication
2001
Pages
1205 - 1209
Database
ISI
SICI code
0004-6280(200110)113:788<1205:9AIEIT>2.0.ZU;2-F
Abstract
We have derived far-ultraviolet extinction curves for stars in the Galaxy, LMC, and SMC from spectra of pairs of stars observed with the Far Ultraviol et Spectroscopic Explorer (FUSE) satellite, matched in spectral type and wi th different amounts of reddening. The stars were observed for other FUSE p rograms and were not selected for large reddening. Thus, uncertainties in t he derived extinction curves depend on the photometric data. In the case of strongly reddened stars from the Galaxy, the strong H-2 absorption at the shortest wavelengths is an additional complication. These initial results i ndicate that there is a family of extinction curves that rise strongly to t he Lyman limit and extend the related extinction curves from longer wavelen gths.