Say hello to your new neighbor. Proxima Centauri, the closest star to the Sun, has an Earth-mass planet in the habitable zone, but it wasn’t easy to find, and it’s in a bit of a dangerous place.
Sometimes a mystery can hide in apparently plain things. Astronomers have just discovered that a delta Scuti star known for over 40 years is actually something entirely different and full of peculiarities.
Image via M. Garlick/University of Warwick, ESA/Hubble.
New research shows hot Jupiters find safety in numbers. According to radial velocity data, these giant exoplanets are more commonly found around stars in open clusters.
What can this planet tell us about the evolution of planetary systems?
How do we model stellar activity to disentangle planet signals from stellar activity using only RVs?
One of the best ways to look for planets around stars is to look for wobbles in the stellar spectrum using state of the art spectrographs. Unfortunately, processes on the star like star spots can also cause shifts in the spectrum. Today’s astrobite uses the Sun to link sunspots to shifts in the solar spectrum. These lessons will help to discover Earth-twins orbiting other stars.