Searching for the signatures of terrestrial planets in F-, G-type main-sequence stars

@article{Hernandez2013SearchingFT,
  title={Searching for the signatures of terrestrial planets in F-, G-type main-sequence stars},
  author={J. I. Gonz'alez Hern'andez and Elisa Delgado-Mena and S{\'e}rgio G. Sousa and Garik Israelian and Nuno C. Santos and Vardan Adibekyan and St{\'e}phane Udry},
  journal={Astronomy and Astrophysics},
  year={2013},
  volume={552},
  pages={14}
}
Context. Detailed chemical abundances of volatile and refractory elements have been discussed in the context of terrestrial-planet formation during in past years. Aims. The HARPS-GTO high-precision planet-search program has provided an extensive database of stellar spectra, which we have inspected in order to select the best-quality spectra available for late type stars. We study the volatile-to-refractory abundance ratios to investigate their possible relation with the low-mass planetary… Expand
Detailed chemical compositions of planet-hosting stars – I. Exploration of possible planet signatures
We present a line-by-line differential analysis of a sample of 16 planet hosting stars and 68 comparison stars using high resolution, high signal-to-noise ratio spectra gathered using Keck. WeExpand
High-precision analysis of binary stars with planets
Aims. We explore for the first time the probable chemical signature of planet formation in the remarkable binary system HD 106515. Star A hosts a massive long-period planet with ~9 MJup detected byExpand
CNO behaviour in planet-harbouring stars. II. Carbon abundances in stars with and without planets using the CH band
Context. Carbon, oxygen and nitrogen (CNO) are key elements in stellar formation and evolution, and their abundances should also have a significant impact on planetary formation and evolution. Aims.Expand
Galactic Chemical Evolution Signatures in Stellar Atmospheres and Their Possible Planetary Connection
In recent years there have been many studies to determine whether there is a chemical signature in stellar atmospheres that can be linked to the presence of planets. Most of these studies haveExpand
CNO behaviour in planet-harbouring stars. I Nitrogen abundances in stars with planets
Carbon, nitrogen, and oxygen (CNO) are key elements in stellar formation and evolution, and their abundances should also have a significant impact on planetary formation and evolution. We present aExpand
Chemical Signatures Of Planets: Beyond Solar-Twins
Context. Elemental abundance studies of solar twin stars suggest tha t he solar chemical composition contains signatures of the formation of terrestrial planets in the solar system, namel y small butExpand
Solar analogs with and without planets: T$_c$ trends and galactic evolution
We explore a sample of 148 solar-like stars to search for a possible correlation between the slopes of the abundance trends versus condensation temperature (known as the Tc slope) both with stellarExpand
The Chemical Homogeneity of Sun-like Stars in the Solar Neighborhood
The compositions of stars are a critical diagnostic tool for many topics in astronomy such as the evolution of our Galaxy, the formation of planets, and the uniqueness of the Sun. PreviousExpand
Detailed Abundances of Stars with Small Planets Discovered by Kepler I: The First Sample
We present newly derived stellar parameters and the detailed abundances of 19 elements of seven stars with small planets discovered by NASA's Kepler Mission. Each star save one has at least oneExpand
Detailed Abundances of Planet-hosting Wide Binaries. I. Did Planet Formation Imprint Chemical Signatures in the Atmospheres of HD 20782/81?
Using high-resolution, high signal-to-noise echelle spectra obtained with Magellan/MIKE, we present a detailed chemical abundance analysis of both stars in the planet-hosting wide binary system HDExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 63 REFERENCES
Volatile and refractory abundances of F- and G-type stars†
We present a detailed chemical abundance analysis of a sample of F- and G-type stars. We investigate the possibility that the presence of terrestrial planets could affect the volatile-to-refractoryExpand
Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program - Galactic stellar populations and planets
Context. We performed a uniform and detailed abundance analysis of 12 refractory elements (Na, Mg, Al, Si, Ca, Ti, Cr, Ni, Co, Sc, Mn, and V) for a sample of 1111 FGK dwarf stars from the HARPS GTOExpand
SEARCHING FOR THE SIGNATURES OF TERRESTRIAL PLANETS IN SOLAR ANALOGS
We present a fully differential chemical abundance analysis using very high resolution (?/?? 85, 000) and very high signal-to-noise (S/N ~800 on average) HARPS and UVES spectra of 7 solar twins andExpand
Abundances of Stars with Planets: Trends with Condensation Temperature
Precise abundances of 18 elements have been derived for 10 stars known to host giant planets from high signal-to-noise ratio, high-resolution echelle spectroscopy. Internal uncertainties in theExpand
Chemical abundances of 451 stars from the HARPS GTO planet search program - Thin disc, thick disc, and planets
We present a uniform study of the chemical abundances of 12 elements (Si, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Na, Mg, and Al) derived from the spectra of 451 stars observed as part of one of the HARPS GTOExpand
Spectroscopic stellar parameters for 582 FGK stars in the HARPS volume-limited sample. Revising the metallicity-planet correlation
To understand the formation and evolution of solar-type stars and planets in the solar neighborhood, we need to obtain their stellar parameters with high precision. We present a catalog of preciseExpand
Abundance ratios of volatile vs. refractory elements in planet-harbouring stars: hints of pollution?
We present the [ X /H] trends as a function of the elemental condensation temperature  T C in 88 planet host stars and in a volume-limited comparison sample of 33 dwarfs without detected planetaryExpand
Exploring the α-enhancement of metal-poor planet-hosting stars. The Kepler and HARPS samples
Recent studies have shown that at low metallicities Doppler-detected planet-hosting stars tend to have high α-content and to belong to the thick disk. We used the reconnaissance spectra of 87 KeplerExpand
Spectroscopic [Fe/H] for 98 extra-solar planet-host stars. Exploring the probability of planet formation
We present stellar parameters and metallicities, obtained from a detailed spectroscopic analysis, for a large sample of 98 stars known to be orbited by planetary mass companions (almost all knownExpand
The HARPS search for southern extra-solar planets - V. A 14 Earth-masses planet orbiting HD 4308
We present here the discovery and characterisation of a very light planet around HD4308. The planet orbits its star in 15.56 days. The circular radial-velocity variation presents a tinyExpand
...
1
2
3
4
5
...