![The [Mg/Si]-[C/O] diagram for the M dwarf sample (overlying orange dots) and GK dwarf sample (underlying colourful dots in density). An ODR fit is applied to the M dwarf sample, with the best fit shown in the solid line and 1σ and 2σ error intervals shown in dash and dot lines (in brown), respectively. The regression parameters are also shown on the plot. A Student’s t-test is also applied to test the significance of the slope different from zero, and the resultant p-value is less than 0.001. -- astro-ph.SR](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/07/Towards-Characterising-Rocky-Worlds.png?resize=1200%2C720&ssl=1)
Elemental abundances of Sun-like stars are crucial for understanding the detailed properties of their planets. However, measuring elemental abundances in M stars is challenging due to their faintness and pervasive […]
Astronomers have discovered three potential “super-Earth” exoplanets orbiting a relatively nearby orange dwarf star. This groundbreaking find was made by an international team of researchers led by Dr Shweta Dalal […]
Terrestrial planets in the Habitable Zone of Sun-like stars are priority targets for detection and observation by the next generation of powerful space telescopes.
The elemental abundances of stars, particularly the refractory elements (e.g., Fe, Si, Mg), play an important role in connecting stars to their planets.
![The plots of stellar metallicity ([Fe/H]) versus planetary orbital period for all transiting planets from the NASA exoplanet archive. Tranet stands for transiting planet. The transiting planets are split into four groups based on the multiplicity of their systems and are placed on four different panels. The two dotted vertical lines split the metallicity range into three metallicity regions, namely, sub-solar, solar, and super-solar. While low-multiplicity systems are evenly distributed across hosts of all metallicities there is a paucity of high-multiplicity systems around hosts of high metallicity indicating the effect of cold Jupiters on the inner planet multiplicity. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/02/Constraining-Planetary.png?resize=1200%2C717&ssl=1)
We report the conditional occurrences between three planetary types: super-Earths (m sin i < 10 M⊕, P < 100 days), warm Jupiters (m sin i > 95 M⊕, 10 < […]
Stellar populations and their distribution differ widely across the Galaxy, which is likely to affect planet demographics.
