TY - GEN
T1 - The role of oxygen abundances in exoplanet host star C/O ratios
T2 - A case study of 55 Cnc
AU - Teske, Johanna K.
AU - Cunha, Katia
AU - Smith, Verne V.
AU - Schuler, Simon C.
AU - Griffith, Caitlin A.
PY - 2013/6
Y1 - 2013/6
N2 - We derive the C/O ratio for the exoplanet host star 55 Cnc based on archive Keck/HIRES spectra. The C/O ratio varies widely depending on which oxygen abundance indicator - the 6300.3 Å [O I] line, the 6363.8 Å [O I] line, or the 7774 Å O I triplet - is used, and we find there is still a large uncertainty even based on individual abundance indicators. This case study demonstrates that caution and care are necessary when determining exoplanet host star C/O ratios, and when considering host star C/O ratios in inferring exoplanet compositions.
AB - We derive the C/O ratio for the exoplanet host star 55 Cnc based on archive Keck/HIRES spectra. The C/O ratio varies widely depending on which oxygen abundance indicator - the 6300.3 Å [O I] line, the 6363.8 Å [O I] line, or the 7774 Å O I triplet - is used, and we find there is still a large uncertainty even based on individual abundance indicators. This case study demonstrates that caution and care are necessary when determining exoplanet host star C/O ratios, and when considering host star C/O ratios in inferring exoplanet compositions.
KW - Planetary systems: formation
KW - Stars: abundances
KW - Stars: individual (55 Cnc)
UR - http://www.scopus.com/inward/record.url?scp=84891880767&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84891880767&partnerID=8YFLogxK
U2 - 10.1017/S1743921313008727
DO - 10.1017/S1743921313008727
M3 - Conference contribution
AN - SCOPUS:84891880767
SN - 9781107045200
T3 - Proceedings of the International Astronomical Union
SP - 307
EP - 308
BT - Exploring the Formation and Evolution of Planetary Systems
PB - Cambridge University Press
ER -