Stellar Parameters and Elemental Abundances of Late-G Giants

@article{Takeda2008StellarPA,
  title={Stellar Parameters and Elemental Abundances of Late-G Giants},
  author={Yoichi Takeda and Bun’ei Sato and Daisuke Murata},
  journal={Publications of the Astronomical Society of Japan},
  year={2008},
  volume={60},
  pages={781-802}
}
The properties of 322 intermediate-mass late-G giants (comprising 10 planet-host stars) selected as the targets of the Okayama Planet Search Program, many of which are red-clump giants, were comprehensively investigated by establishing their various stellar parameters (atmospheric parameters, including turbulent velocity fields, metallicity, luminosity, mass, age, projected rotational velocity, etc.), and their photospheric chemical abundances for 17 elements, in order to study their mutual… Expand
Stellar Parameters and Abundance Analysis of 58 Late G Giants
We present stellar atmospheric parameters, and kinematic parameters for a part of Xinglong Planet Search Program sample – 58 late G-type giants, obtained at Okayama Astrophysical Observatory.Expand
Metallicities of Planet-hosting Stars: A Sample of Giants and Subgiants
This work presents a homogeneous derivation of atmospheric parameters and iron abundances for a sample of giant and subgiant stars which host giant planets, as well as a control sample of subgiantExpand
Stellar parameters and chemical abundances of 223 evolved stars with and without planets
Aims. We present fundamental stellar parameters, chemical abundances, and rotational velocities for a sample of 86 evolved stars with planets (56 giants; 30 subgiants), and for a control sample ofExpand
Precise Radial Velocities of Giant Stars VII. Occurrence Rate of Giant Extrasolar Planets as a Function of Mass and Metallicity
(abridged) We have obtained precise radial velocities for a sample of 373 G and K type giants at Lick Observatory regularly over more than 12 years. Planets have been identified around 15 giantExpand
Stellar Parameters and Chemical Abundances of G Giants
We present basic stellar parameters of 99 late-type G giants based on high-resolution spectra obtained by the High Dispersion Spectrograph attached to Subaru Telescope. These stars are targets of aExpand
Fundamental stellar parameters and age-metallicity relation of Kepler red giants in comparison with theoretical evolutionary tracks
Spectroscopic parameters (effective temperature, metallicity, etc) were determined for a large sample of ~100 red giants in the Kepler field, for which mass, radius, and evolutionary status hadExpand
Connecting substellar and stellar formation: the role of the host star’s metallicity
Context. Most of our current understanding of the planet formation mechanism is based on the planet metallicity correlation derived mostly from solar-type stars harbouring gas-giant planets. Aims. ToExpand
Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets
Aims. We have analyzed high-resolution and high signal-to-noise-ratio optical spectra of nearby FGK stars with and without detected giant planets in order to homogeneously measure their photosphericExpand
The Lithium Abundances of a Large Sample of Red Giants
The lithium abundances for 378 G/K giants are derived with non-local thermodynamic equilibrium correction considered. Among these are 23 stars that host planetary systems. The lithium abundance isExpand
Abundances in the Local Region I: G and K Giants
Parameters and abundances for 1133 stars of spectral types F, G, and K of luminosity class III have been derived. In terms of stellar parameters, the primary point of interest is the disagreementExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 49 REFERENCES
Stellar Parameters and Photospheric Abundances of Late-G Giants : Properties of the Targets of the Okayama Planet Search Program
Towards clarifying the properties of late-G giants, for which we are currently conducting a planet-search project at Okayama Astrophysical Observatory, an extensive spectroscopic study has beenExpand
Evolved stars suggest an external origin of the enhanced metallicity in planet-hosting stars
Aims. Exo-planets are preferentially found around high metallicity main sequence stars. We aim at investigating whether evolved stars share this property, and what this tells about planet formation.Expand
Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database
The properties of 160 F, G, and K disk dwarfs/subgiants (including 27 planet-host stars) mostly within � 0:6 . [Fe/H] . +0:4 ,t he Okayama Astrophysical Observatory spectrum collection of which hadExpand
Behavior of Li abundances in solar-analog stars - Evidence for line-width dependence
Context. It is known that the surface lithium abundances of field solar-analog G dwarfs show a large dispersion of >2 dex (among which our Sun is located at the lower end) despite the similarity ofExpand
Giants in the Local Region
We present parameter and abundance data for a sample of 298 nearby giants. The spectroscopic data for this work have a resolution of R ~ 60,000, S/N > 150, and spectral coverage from 475 to 685 nm.Expand
Photospheric CNO Abundances of Solar-Type Stars
We determined the C, N, and O abundances of 160 nearby F, G, and K dwarfs and subgiants by using spectra obtained with the HIDES spectrograph at Okayama Astrophysical Observatory, with the purposesExpand
Abundance Differences among Globular Cluster Giants: Primordial vs. Evolutionary Scenarios
Contrary to historical expectation, stars within a given globular cluster often exhibit wide variations in the abundance of C, N, and O as well as certain light metals, particularly Na and Al. OwingExpand
Toward a Deterministic Model of Planetary Formation. II. The Formation and Retention of Gas Giant Planets around Stars with a Range of Metallicities
The apparent dependence of detection frequency of extrasolar planets on the metallicity of their host stars is investigated with Monte Carlo simulations using a deterministic core-accretion planetExpand
High-Resolution Spectroscopic Observations of Hipparcos Red Clump Giants: Metallicity and Mass Determinations
We obtain high-resolution and high signal-to-noise ratio spectra of 39 red clump giants selected from the Hipparcos Catalogue. We determine their atmospheric parameters, iron abundances, α-elementExpand
HIPPARCOS age metallicity relation of the solar neighbourhood disc stars
We derive age-metallicity relations (AMRs) and orbital parameters for the 1658 solar neighbourhood stars to which accurate distances are measured by the HIPPARCOS satellite. The sample stars compriseExpand
...
1
2
3
4
5
...