Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...185..291k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 185, no. 1-2, Oct. 1987, p. 291-296.
Astronomy and Astrophysics
Astrophysics
22
B Stars, Interstellar Extinction, Milky Way Galaxy, O Stars, Star Clusters, Ultraviolet Spectra, Data Bases, Open Clusters, Periodic Variations, Radiation Distribution
Scientific paper
For about 1200 O - B4 stars observed by ANS, normalized UV extinction parameters, E(bump)/E(B-V) and E(1550 - 1800)/E(B-V), have been calculated together with the distance from the galactic plane, z. A slight correlation of UV extinction parameters with |z| appears: at high |z| low values of E(bump)/E(B-V) and high values of E(1550 - 1800)/E(B-V) are more frequent. Shock waves and/or radiation fields may be responsible for this effect. The same parameters have been studied in 30 OB associations. Association-to-association variations of UV extinction are confirmed, which are not well correlated with galactic longitude. The open cluster Tr 37 is found to exhibit an exceptional behaviour.
Kiszkurno-Koziej E.
Lequeux James
No associations
LandOfFree
Variations in UV excitation in galactic associations and perpendicular to the galactic plane does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Variations in UV excitation in galactic associations and perpendicular to the galactic plane, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Variations in UV excitation in galactic associations and perpendicular to the galactic plane will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1772994