Advances in Astronomy and Space Physics, Volume 4, Issue 1-2, PP. 20-24 (2014)
doi: 10.17721/2227-1481.4.20-24
doi: 10.17721/2227-1481.4.20-24
Abundances in the atmosphere of the metal-rich
planet-host star HD 77338
planet-host star HD 77338
1Taras Shevchenko National University of Kyiv, Glushkova ave., 4, Kyiv 03127, Ukraine
2Main Astronomical Observatory of the NAS of Ukraine, Akademika Zabolotnoho Str. 27, Kyiv 03680, Ukraine
3Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
4Departamento de Astronomía, Universidad de Chile, Camino el Observatorio 1515, Las Condes, Santiago, Chile
2Main Astronomical Observatory of the NAS of Ukraine, Akademika Zabolotnoho Str. 27, Kyiv 03680, Ukraine
3Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield, Hertfordshire AL10 9AB, UK
4Departamento de Astronomía, Universidad de Chile, Camino el Observatorio 1515, Las Condes, Santiago, Chile
Abstract
Abundances of Fe, Si, Ni, Ti, Na, Mg, Cu, Zn, Mn, Cr and Ca in the atmosphere of the K-dwarf HD 77338 are determined and discussed. HD 77338 hosts a hot Uranus-like planet and is currently the most metal-rich single star to host any planet. Determination of abundances was carried out in the framework of a self-consistent approach developed by Pavlenko et al. (2012). Abundances were computed iteratively by the ABEL8 code, and the process converged after 4 iterations. We find that most elements follow the iron abundance, however some of the iron peak elements are found to be over-abundant in this star.
Keywords:
stars: abundances, stars: atmospheres, stars: individual (HD 77338), line: profiles