Stellar Abundance for Galactic Archeology SAGA Database and

Stellar Abundance for Galactic Archeology (SAGA) Database and Its Extension for Planet-hosting Stars Y. Katsuta 1), T. Suda 1, 2), S. Yamada 1), N. Nishimura 3), Y. Komiya 3), C, Ishizuka 1, 2), M. Y. Fujimoto 1), M. Takada-Hidai 4), Y. Gunji 4), H. Toyosawa 4) 1) 2) 3) 4) Hokkaido University Keele University National Astronomical Observatory of Japan Tokai University

1. SAGA database http: //saga. sci. hokudai. ac. jp/ http: //www. astro. keele. ac. uk/saga/ Suda et al. (2008) 1. Collection of observed data taken from the literature on the abundance analyses of metal-poor stars in our Galactic halo 2. Compilation of adopted stellar parameters, derived abundance data, etc. using on-line Data Registration System 3. Access to the data through web browsers Data retrieval system

Contents of SAGA(1) n n Stars: n Complete collection of published data 　for stars of [Fe/H] ≦-2. 5 n 1305 stars (3208 when Complete duplications included; collection from 149 papers) Abundance data n [X/Fe]: 19, 185 n [X/H]: 22, 835 n log ε: 22, 835

Contents of the SAGA(2) n Atmosphere n n Photometry n n n U, B, V, R, I, J, H, K Magnitudes Color indexes Equivalent width n n Teff, log g, [Fe/H], vturb Equivalent width, log gf, Excitation Potential Isotopic ratio Binarity Referenced solar abundances

Contents of the SAGA(3) n Observing logs: n n Object name, position, Observing date, Telescope, Resolution, Typical S/N, Exposure, Radial velocity Bibliography: Paper title, Author

Screen snapshot of SAGA start page http: //saga. sci. hokudai. ac. jp Hyperlink to the data retrieval system

Range Specify X and Y axis Additional criteria

SAGA search result Atmospheric parameters adopted for each object and reference Choose to plot this object Retrieved values and available data. Choose one datum if two or more data are available.

Graph plot Automatically generated clickable map Link to quick preview of each object

Quick Preview of Data Link to SIMBAD Abundance distribution of this object

Extension to the metal-rich stars and planet hosts n We have started to extend SAGA for the planet hosts and the metal-rich stars n Compiled data n 10 papers n 940 (1463) stars • 72 PHS, • 868 non-PHS n 12, 156 [X/H] data UNDER CONSTRUCTION

[Fe/H] Number [Fe/H] distribution □: non-PHS □: PHS +: non-PHS △: PHS Teff n [Fe/H] Well-known characteristics, high surface metallicity, of the PHSs can be seen

Vanadium abundances Sadakane+2002 [V/Fe] n SAGA+ 1. 0 0 -0. 2 -0. 5 [Fe/H] 0 Potential trend of overabundance of V (Sadakane et al. 2002, Bodaghee et al. 2006, Gilli 2006) +: non-PHS 0. 5 △: PHS

[Si/H] Si abundances [Fe/H] n Robinson+2006 SAGA+ [Fe/H] n Clear overabundance (Robinson et al. 2006) Underabundance (Gonzalez & Laws 2007)

Cross-reference data plot [Na/Si] n [Fe/H] [Na/Si] values are internally processed by [Na/Fe] and [Si/Fe]

Summary & Future works n SAGA database n n http: //saga. sci. hokudai. ac. jp Easy to search, plot, and download data We have started to extend SAGA database into higher metallicity stars and planet host stars Some important data for metal-rich stars and planet hosts are to be installed in the future n Stellar masses, Planet orbital parameters, Planet masses

The new database will n n n Reveal the characteristics of planet host stars from the element abundances Reveal the whole history of the star formation and chemical evolution in our Galaxy from the extremely metal-poor stars to the super metal-rich stars Be open to the public in the near future

Ni and Ti abundances n ６６２