Ultraviolet observations of interstellar absorption lines toward SN 1987A

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/167914· OSTI ID:5095706

Savage, B D; Jenkins, E B; Joseph, C L; De Boer, K S ^[1]

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1. Washburn Observatory, Madison, WI (USA) Princeton Univ. Observatory, NJ (USA) Bonn Universitaet, Sternwarte (Germany, F.R.)

High-dispersion IUE echelle spectra of SN 1987A were averaged in order to obtain UV absorption-line profiles of the highest possible quality in the direction of SN 1987A. The profiles for Si IV and C IV are quite similar and have much less structure than the Al III profile. On relating column densities, while the C IV and Si IV ratio is relatively constant over the 0-100 km/s velocity range, the C IV to Al III and Si IV to Al III ratios vary by nearly a factor of 10. This suggests that the C IV and Si IV along this sight line in the Galaxy and its halo may have a common origin which differs from that for Al III. 76 refs.

• OSTI ID: 5095706
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 345; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ABSORPTION SPECTRA
CARBON IONS
CHARGED PARTICLES
ELECTROMAGNETIC RADIATION
ERUPTIVE VARIABLE STARS
GALAXIES
INTERSTELLAR SPACE
IONS
MAGELLANIC CLOUDS
MILKY WAY
ORIGIN
RADIATIONS
SILICON IONS
SPACE
SPECTRA
STARS
SUPERNOVAE
ULTRAVIOLET RADIATION
VARIABLE STARS