Spectral Line Variations in the Ap Star HD 42536

Details Spectral Line Variations in the Ap Star HD 42536 Spectral Line Variations in the Ap Star HD 42536

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003basi...31..337b&link_type=abstract

Bulletin of the Astronomical Society of India, vol. 31, p.337-339

Astronomy and Astrophysics

Astronomy

Ap Star, Spectral Lines, Variations

Scientific paper

The Sr-Cr type chemically peculiar star HD 42536 (= HR 2195) was observed with the 2.34 meter Vainu Bappu Telescope. Kavalur during the period of November 1998 to April 1999. A total of 46 spectrograms were obtained in the wavelength region of 3900 Å to 4300 Å at a linear dispersion of 0.65 Å per pixel. The equivalent widths of Sr (4077) and Cr (4172) have been found to be varying with a period of 0.58 ± 0.02 day, the amplitudes being about 100 mÅ and 60 mÅ respectively. This period is a resonance value of the peroid given by Manfroid and Mathys (1985).

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