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- W4247792499 abstract "Spectral scans of a number of early-type stars have been made with a three-channel spectrophotometer attached to a 32 cm telescope. The telescope was pointed at the individual program stars with an accuracy of at least 20 sec of arc. The spectral resolution was 10 Å over the range 1150 Å to 4000 Å. The data were recorded in digital form and processed in a computer. The profile of hydrogen Ly- α , as smeared by the exit slit, was obtained for α Lyr, α CMA, β Ori, and β Tau. For the earlier-type stars observed the Ly- α line of the star is masked by interstellar hydrogen absorption. For ζ Oph and ζ Per the Ly- α absorption is considerably larger than for the other early-type stars. The identification of lines is relatively simple for the light elements but becomes more difficult with the heavier ions since there are many more weaker lines and 10 Å is then insufficient resolution. Extreme P Cygni profiles are present in the earliest stars and are interpreted as mass loss at high velocity. A full description appears in Astrophys. J. 159 , Feb. 1970." @default.
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- W4247792499 date "1970-01-01" @default.
- W4247792499 modified "2023-09-29" @default.
- W4247792499 title "Photoelectric rocket spectra at 10 Å resolution" @default.
- W4247792499 doi "https://doi.org/10.1017/s0074180900102001" @default.
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