# The Metallicity-Period-Mass Diagram of low-mass exoplanets

## TL;DR

This study investigates the relationships between metallicity, orbital period, and mass in low-mass exoplanets, suggesting a potential correlation that warrants further investigation with more precise data.

## Contribution

The paper provides an updated analysis of the metallicity-period-mass diagram for low-mass exoplanets using a new stellar parameter catalog, highlighting a possible correlation.

## Key findings

- Potential correlation between planet mass, metallicity, and period.
- The observed correlation may not be solely due to observational biases.
- Further precise data is needed to confirm the correlation.

## Abstract

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 its 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 CATalog (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$_{\oplus}$ 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 be not fully explained by observational biases. Additional precise data will be fundamental to confirm or deny this possible correlation.