Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64..815a&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, July-Aug. 1987, p. 815-824. In Russian.
Astronomy and Astrophysics
Astronomy
1
Radial Velocity, Spectral Line Width, Spectrum Analysis, Stellar Spectrophotometry, Variable Stars, Abundance, Balmer Series, Stellar Luminosity, Stellar Rotation, Ubv Spectra
Scientific paper
The measurements of the radial velocities, equivalent widths and line component half-widths of Cr, Eu, Fe, Si, Sr, Gd allowed to reveal the presence of some regions on the surface of the star HD 148112 with high concentration of these elements. Brightness minimum in B and V coincides in phase with that of equivalent widths of the above-mentioned element lines. The number of spots for all elements is equal to six, however, their coordinates differ slightly. The investigation of the Balmer hydrogen lines showed that lg (N02H) and lg ne change with the rotation period. The short-period variations were studied and a period of 2h.5 has been found.
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