Variation of the Si II features in the chemically peculiar star - HD 115735

Details Variation of the Si II features in the chemically peculiar star - HD 115735 Variation of the Si II features in the chemically peculiar star - HD 115735

Jun 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004basi...32..113s&link_type=abstract

Bulletin of the Astronomical Society of India, vol. 32, Issue 2, p.113

Astronomy and Astrophysics

Astronomy

Ap Stars, Spectral Features, Equivalent Width, Variation Period, Variation Period.

Scientific paper

The chemically peculiar star HD 115735 (= HR 5023 = 21 CVn) was observed with the 2.34 meter Vainu Bappu Telescope at Kavalur during the period of January 1999 to April 2000. A total of 47 spectrograms were obtained in the wavelength region of 3900 º to 4400 º at a resolution of 0.65 per pixel. The equivalent widths of Si II features at 4077, 4128, 4131 have been found to be varying with a period of 0.88 +/- 0.02 day, the amplitudes being about 0.1º. This is the ¯first report of spectroscopic variations of these features in this star.

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