Computer Science – Sound
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...347l..81c&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 347, Dec. 15, 1989, p. L81-L84.
Computer Science
Sound
11
B Stars, Binary Stars, Far Ultraviolet Radiation, Rocket-Borne Instruments, Stellar Spectrophotometry, Ultraviolet Photometry, Early Stars, O Stars, Stellar Spectra, Ultraviolet Spectra, Voyager 2 Spacecraft
Scientific paper
A spectrum of the star Spica (Alpha Virginis) from 960 to 1270 A was recorded by a rocket-borne spectrograph March 13, 1988. The spectrum, which has 3.4 A resolution, shows a much sharper drop-off in intensity near 1050 A than similar measurements made by the Voyager UVS, but is in good agreement with the spectrum obtained by Brune et al. in a 1977 sounding rocket. The disagreement with Voyager is a factor of 1.5 at 1100 A and grows to a factor of 5.7 at 960 A. This implies that the photometric standards between 912 and 1100 A may need some revision, and that the standard photospheric models for hot stars may err significantly near the Lyman limit.
Cash Webster
Cook Timothy A.
Snow Theodore P.
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