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arXiv · 1807.08121

Low resolution spectroscopic investigation of Am stars using Automated method

Kaushal Sharma·Santosh Joshi·H. P. Singh
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Abstract

Automated method of full spectrum fitting gives reliable estimates of stellar atmospheric parameters (Teff, logg and [Fe/H]) for late A, F, G and early K type stars. Recently, the technique was further improved in the cooler regime and the validity range was extended up to M6 - M7 spectral type( Teff $\sim\,2900$ K). The present study aims to explore the application of this method on the low-resolution spectra of Am stars, a class of chemically peculiar (CP) stars, to examine its robustness for these objects. We use ULySS with MILES (Medium-resolution INT Library of Empirical Spectra) V2 spectral interpolator for parameter determination. Determined Teff and logg are found to be in good agreement with those obtained from high-resolution spectroscopy.

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Kaushal Sharma, Santosh Joshi, H. P. Singh. 2018-07-21. Low resolution spectroscopic investigation of Am stars using Automated method. https://arxiv.org/abs/1807.08121

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