Speaker
Description
Astronomical spectroscopy is a study of how matter interacts with light (Penner, 2017). Today, it is recognised that light behaves both like a wave and particle (Sliney, 2016). Scientists use spectroscopy to study celestial objects by analysing the light they emit, absorb, or reflect. The separation of light with a spectrograph results in the visible spectrum (Dopita et al., 2007). Studying the light of the stars can reveal a lot about them. For instance, their spectral types, temperatures, densities, relative motions and elements present. The aim of this project is to obtain high-quality spectra of various 𝜆 Bootis to determine their physical and chemical properties. Murphy et al. (2015) re-evaluated the study of 212 stars that were considered as 𝜆 Boo stars, of which the status of 45 stars was unclear. To confirm whether stars are indeed the members of 𝜆 Bootis class, Murphy et al. (2020) recommended that more spectra should be obtained, and more abundance analysis should be conducted. The authors have been obtaining spectra using the same spectrographs over and over and got unsatisfactory results. They never use other spectrographs with high resolution. To better their results, Southern African Large Telescope High Resolution Spectrograph will be utilised, as it is suited for detailed spectral analysis. 𝜆 Boo Stars and 𝜆 Bootis are used interchangeably.
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