5 papers
Potential sublimating exocomets around the young star PDS 70
Aline Novais, H. Jens Hoeijmakers, Alexandra Stockwell Murphy +4
Recent observations by the James Webb Space Telescope (JWST) have indicated the presence of water in the inner regions of the disc around the young protostar PDS 70, but the origin…
Chemical Abundances of the Bioessential Elements C, O and S, and the Refractory Elements Fe and Ni, in Solar-type Exoplanet-hosting Stars from HARPS North and South
E. Costa-Almeida, L. Ghezzi, K. Cunha +2
We determined atmospheric and evolutionary parameters, along with chemical abundances of C, O, S, Fe, and Ni for 290 solar-type exoplanet hosting stars using high-resolution HARPS-…
A comprehensive study of the relations between the properties of planetary systems and the chemical compositions of their host stars
Luan Ghezzi, Ellen Costa-Almeida, Verónica Loaiza-Tacuri +1
The giant planet-metallicity correlation revealed that planetary formation depends on the stellar properties. There is growing evidence that it is also valid for smaller hot planet…
Stellar characterization, Magnesium Abundances and Chromospheric Activity Analysis of Stars with Confirmed Exoplanets from the K2 mission
V. Loaiza-Tacuri, Diogo Souto, F. Quispe-Huaynasi +5
We present a homogeneous spectroscopic analysis of confirmed K2 mission exoplanet-hosting stars, comprising 301 targets with high-resolution optical spectra from HIRES and TRES tak…
Utilizing Machine Learning to Predict Host Stars and the Key Elemental Abundances of Small Planets
AmÃlcar R. Torres-Quijano, Natalie R. Hinkel, Caleb H. Wheeler +3
Stars and their associated planets originate from the same cloud of gas and dust, making a star's elemental composition a valuable indicator for indirectly studying planetary compo…