Bibcode
Sousa, S. G.; Adibekyan, Vardan; Santos, Nuno C.; Mortier, Annelies; Barros, Susana C. C.; Delgado-Mena, Elisa; Demangeon, Olivier; Israelian, G.; Faria, João P.; Figueira, Pedro; Rojas-Ayala, Barbara; Tsantaki, Maria; Andreasen, Daniel T.; Brandão, Isa; Ferreira, Andressa C. S.; Montalto, Marco; Santerne, Alexandre
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 485, Issue 3, p.3981-3990
Advertised on:
5
2019
Citations
15
Refereed citations
13
Description
The number of exoplanet detections continues to grow following the
development of better instruments and missions. Key steps for the
understanding of these worlds comes from their characterization and
statistical studies. We explore the metallicity-period-mass diagram for
known exoplanets by using an updated version of The Stellar parameters
for stars with ExoplanETs CATalogue (SWEET-Cat), a unique compilation of
precise stellar parameters for planet-host stars provided for the
exoplanet community. Here, we focus on the planets with minimum mass
below 30 M⊕ which seems to present a possible
correlation in the metallicity-period-mass diagram where the mass of the
planet increases with both metallicity and period. Our analysis suggests
that the general observed correlation may not be fully explained by
observational biases. Additional precise data will be fundamental to
confirm or deny this possible correlation.
Related projects
Observational Tests of the Processes of Nucleosynthesis in the Universe
Several spectroscopic analyses of stars with planets have recently been carried out. One of the most remarkable results is that planet-harbouring stars are on average more metal-rich than solar-type disc stars. Two main explanations have been suggested to link this metallicity excess with the presence of planets. The first of these, the “self
Garik
Israelian