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.
Spirou often runs into fantastic adventures with his courageous, and sharp pet squirrel Spip. Their next adventure: a radial velocity spectrograph. What sophisticated technology is this? How does it work? What can it help us find?
What might be the strangest architecture yet of an exoplanetary system was discovered, and it raises big questions as to how planetary systems form and evolve.