천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제35권2호
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- Pages.78.1-78.1
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- 2010
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- 1226-2692(pISSN)
Chemical Abundances of 93 Planet Host stars
- Kang, Won-Seok (Department of Physics and Astronomy, Seoul National University) ;
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Lee, Sang-Gak
(Department of Physics and Astronomy, Seoul National University) ;
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Kim, Kang-Min
(Korea Astronomy and Space Science Institute)
- 발행 : 2010.10.06
초록
We obtained the spectra of 93 Planet host stars and 73 normal field stars in F, G, K type using BOES at BOAO. We measured the equivalent width of Fe and 13 elements lines using the automatic EW measurement program, TAME(Tools for Automatic Measurement of Equivalent-widths) and estimated the abundances by synth and abfind driver of MOOG code. Since the absence of planets in the normal field stars cannot be "completely" proved, this work focused on the chemical abundances and planet properties of planet host stars, which have the massive planets close to the parent star relatively. We carried out an investigation for the difference of abundances between stars with "Hot Jupiter" and normal field stars with no known planets. We examined the chemical composition of 12 elements, such as Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Co, and Ni by EW measurements, and the S abundances were estimated using synthetic spectrum.
키워드