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Carbon and oxygen abundances in dwarf stars of the Solar neighbourhood

Published online by Cambridge University Press:  13 January 2020

G. Tautvaišienė ,
R. Minkevičiūtė ,
E. Stonkutė ,
A. Drazdauskas  and
Š. Mikolaitis
G. Tautvaišienė
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, 10257, Vilnius, Lithuania email: [email protected]
R. Minkevičiūtė
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, 10257, Vilnius, Lithuania email: [email protected]
E. Stonkutė
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, 10257, Vilnius, Lithuania email: [email protected]
A. Drazdauskas
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, 10257, Vilnius, Lithuania email: [email protected]
Š. Mikolaitis
Affiliation:
Institute of Theoretical Physics and Astronomy, Vilnius University, Sauletekio av. 3, 10257, Vilnius, Lithuania email: [email protected]
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Abstract

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Stars and planets form from the same material, thus some of their properties are expected to be inter-connected. In order to characterise exoplanets, we need to investigate the planet-hosting stars. Carbon and oxygen are quite abundant and play an important role in stellar interiors by generating energy in thermonuclear reactions. Abundances of C and O may influence water availability on exoplanets. The C/O ratio also controls an amount of carbides and silicates that can be formed. Thus, we are performing a uniform study of C/O ratios in bright stars ( V < mag) located towards the northern ecliptic pole which will be targeted by the TESS and JWST space missions. The first results for a sample of 140 stars analysed are presented.

Keywords

stars: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 265 - 266
Copyright
© International Astronomical Union 2020 

References

Brewer, J. M., & Fischer, D. A. 2016, ApJ, 831, 20 CrossRefGoogle Scholar
Grevesse, N., Asplund, M., & Sauval, A. J. 2007, SSRv, 130, 105 Google Scholar
Gustafsson, B., Edvardsson, B., Eriksson, K., et al. 2008, A&A, 486, 951 Google Scholar
Jurgenson, C., Fischer, D., McCracken, T., et al. 2016, Journal of Astronomical Instrumentation, 5, 1650003–239CrossRefGoogle Scholar
Madhusudhan, N. 2018, arXiv:1808.04824Google Scholar
Mikolaitis, Š., Tautvaišien, G., Drazdauskas, A., et al. 2018, PASP, 130, 074202 CrossRefGoogle Scholar
Moriarty, J., Madhusudhan, N., & Fischer, D. 2014, ApJ, 787, 81 CrossRefGoogle Scholar
Piskunov, N. E., Kupka, F., Ryabchikova, T. A., Weiss, W. W., & Jeffery, C. S. 1995, A&AS, 112, 525 Google Scholar
Sneden, C. A. 1973, Ph.D. Thesis Google Scholar
Stetson, P. B., & Pancino, E. 2008, PASP, 120, 1332 CrossRefGoogle Scholar
Suárez-Andrés, L., Israelian, G., González Hernández, J. I., et al. 2018, A&A, 614, A84 Google Scholar
Suárez-Andrés, L., Israelian, G., González Hernández, J. I., et al. 2017, Highlights on Spanish Astrophysics, IX, 567 Google Scholar
Thiabaud, A., Marboeuf, U., Alibert, Y., Leya, I., & Mezger, K. 2015, A&A, 580, A30 Google Scholar