Search for rapid spectral feature variations in chemically peculiar star HR 4330 |
| |
| Authors: | S M Sriraghavan G S D Babu |
| |
| Institution: | M.P. Birla Institute of Fundamental Research, Bangalore 560001, India;BrainSTARS (Innovation in Education), Bangalore 560041, India |
| |
| Abstract: | The chemically peculiar star HR 4330 (=HD 96707, EP-UMa) was observed using the 2-m Himalayan Chandra Telescope at the Indian Astronomical Observatory, Hanle, India, for studying the variations in its spectral features. It was found that the spectral features of Ca ii 3933 Å and Sr ii 4077 Å were showing rapid variations in their equivalent widths with a periodicity of 0.28 ± 0.02 d . Such short-term variations suggest that there could be a dynamically active surface with rapid variation in the conditions of the stellar atmosphere. |
| |
| Keywords: | diffusion stars: individual: HR 4330 |
|
|
