Chemical Fingerprints of Planets: What Solar Twins Tell Us About the Sun and the Galaxy
Martos et al. used a neural network to measure precise chemical abundances in stars similar to the Sun. They found the Sun is unusually depleted in refractory elements, likely due to planet formation. Their results also suggest the presence of distinct stellar subpopulations in the Milky Way, offering new insights into stellar and planetary evolution.
Is Our Sun Special? Comparing the Sun to Its Stellar Siblings
Herbst et al. analyzed 48 Sun-like stars to see how closely they resemble the Sun in magnetic activity. Only one star, KIC 11599385, matched the Sun in key properties, including faculae dominance and rotation period. This suggests the Sun may be rare among its peers, highlighting the need for more precise, unbiased observations.