Stark broadening, the widening of spectral lines due to the perturbing influence of electric fields from electron collisions, plays a pivotal role in the analysis of stellar atmospheres. This ...

Astronomers study stars by looking at the different colors of light they emit—colors they capture and analyze using spectroscopy. Now a team led by Université de Montréal's Étienne Artigau has ...

Stellar spectral types originally followed alphabetical order. But as astronomers observed more stars and obtained more detailed spectra, they consolidated some categories and reordered the remaining ...

Observations of nearby red dwarf stars reveal rare carbon and oxygen isotopes, offering direct evidence of stellar nucleosynthesis and the chemical evolution of the Milky Way.