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Spectral Results For The Blue Plume Stars In Canis Major Overdensity, Mirza Sharoz Rafiul Islam
Spectral Results For The Blue Plume Stars In Canis Major Overdensity, Mirza Sharoz Rafiul Islam
Theses and Dissertations--Physics and Astronomy
We present distances and kinematics and look at the possible populations for the blue plume (BP) stars in the Canis Major Overdensity (CMa). We conducted a medium resolution spectral survey on the BP stars (N=303) in CMa (centered at l = 238° ; b = -8°) using the data from AAOmega Spectrograph. We used a modified version of the Statistics-sensitive Non-linear Iterative Peak-clipping (SNIP) algorithm to normalize our fluxed absorption spectra. After determining the radial velocities from measurements of strong absorption features for the stars we use a Bayesian analysis of spectral feature strengths and photometric colors to determine Teff, …