Abstract
view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The absolute magnitudes of the early A-type stars from hydrogen line absorption. Petrie, R. M. ; Maunsell, C. D. Abstract The intensities of H~ have been determined, by spectrophotometric measures, in the spectra of 165 stars of spectral types B8 to A3. The measures have been calibrated against absolute magnitudes derived from trigonometric, spectroscopic, dynamical, and cluster parallaxes. The equivalent width of H~ is found to be capable of predicting the absolute magnitude of a normal star, white dwarfs being excepted. The mean residual from the trigonometric parallaxes is Q'.'00I ~ "001. Spectroscopic absolute magnitudes are given for 165 A stars. Dominion Astrophysical Observatory, Victoria, B. C., Canada. Publication: The Astronomical Journal Pub Date: September 1949 DOI: 10.1086/106259 Bibcode: 1949AJ.....54..193P full text sources ADS |
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