Radial velocity curves of 4 stars

The aim of this project is to detect and characterize planetary-mass companions to solar-mass stars in a sample of 122 targets at various stages of evolution from the main sequence (MS) to the red giant branch (RGB), mostly subgiants and giants, selected from the Pennsylvania-Torun Planet Search (PTPS) sample, and to use this sample to study relations between stellar properties, such as metallicity, luminosity, and the planet occurrence rate.

This work is based on precise radial velocity (RV) measurements. We have observed the program stars for up to 14 years with the HET/HRS and the TNG/HARPS-N. We present the analysis of RV measurements with the HET/HRS and the TNG/HARPS-N of four solar-mass stars, HD 4760, HD 96992 , BD+02 3313, and TYC 0434-04538-1. We found that HD 4760 hosts a companion with a minimum mass of 13.9M_J_) (a=1.14au, e=0.23); HD 96992 is a host to a msini=1.14M_J_ companion on an a=1.24au and e=0/41 orbit, and TYC 0434-04538-1 hosts an msini=6.1M_J_ companion on an a=0.66au and e=0.08 orbit.