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Subhajeet Karmakar, Avrajit Bandyopadhyay, William Bruce Weaver, Riddhi Shedge, Jeewan Chandra Pandey, Daniel Vincent Cotton & Jean Perkins

Near-UV and Optical Spectroscopic Investigation of Late-type Stars from the MIRA/Oliver Observing Station

(Volume 93 - Année 2024 — No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation)
DOI: 10.25518/0037-9565.11709
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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.

Keywords : stars: low-mass, star: abundances, star: stellar atmosphere, star: individual (HR 8038, AC Her, HD 76446)

Pour citer cet article

Subhajeet Karmakar, Avrajit Bandyopadhyay, William Bruce Weaver, Riddhi Shedge, Jeewan Chandra Pandey, Daniel Vincent Cotton & Jean Perkins, «Near-UV and Optical Spectroscopic Investigation of Late-type Stars from the MIRA/Oliver Observing Station», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 93 - Année 2024, No 2 - Proceeedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, 341-350 URL : http://popups.ulg.be/0037-9565/index.php?id=11709.

A propos de : Subhajeet Karmakar

Monterey Institute for Research in Astronomy (MIRA), 200 Eighth Street, Marina, California 93933, USA. Corresponding author: subhajeet09@gmail.com, sk@mira.org

A propos de : Avrajit Bandyopadhyay

University of Florida, Gainesville, Florida, 32611, USA

A propos de : William Bruce Weaver

Monterey Institute for Research in Astronomy (MIRA), 200 Eighth Street, Marina, California 93933, USA

A propos de : Riddhi Shedge

Monterey Institute for Research in Astronomy (MIRA), 200 Eighth Street, Marina, California 93933, USA and Monta Vista High School, 21840 McClellan Rd, Cupertino, California 95014, USA

A propos de : Jeewan Chandra Pandey

Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263002, India

A propos de : Daniel Vincent Cotton

Monterey Institute for Research in Astronomy (MIRA), 200 Eighth Street, Marina, California 93933, USA and Western Sydney University, Locked Bag 1797, Penrith-South DC, NSW 1797, Australia

A propos de : Jean Perkins

Monterey Institute for Research in Astronomy (MIRA), 200 Eighth Street, Marina, California 93933, USA