Near-UV and Optical Spectroscopic Investigation of Late-type Stars from the MIRA/Oliver Observing Station
Karmakar, Subhajeet; Pandey, Jeewan Chandra; Shedge, Riddhi; Bandyopadhyay, Avrajit; Perkins, Jean; Weaver, William Bruce; Cotton, Daniel Vincent
Abstract
Late-type stars are the most abundant in the galactic stellar population. These stars, with the similar internal structure to the Sun, are expected to have solar-like atmospheres. Investigating the stellar parameters and chemical abundances on late-type stars is essential to provide valuable constraints about stellar age, chemical evolution, and atmosphere of exoplanets. In this work, we present the study of the Near-UV and optical spectroscopic observation of three latetype stars: HR 8038, AC Her, HD 76446, as obtained from 36-inch MIRA/Oliver Observing Station. We derived surface temperature, gravity, metallicity, and the chemical abundances of light element carbon in the stellar atmosphere. The elemental abundance of the carbon for HR 8038, AC Her, and HD 76446 are derived to be 95%, 97%, and 108%, respectively, of the solar value.