We are used to thinking about planet transits in visible wavelengths. What can we learn from planet transits in the radio band? Today, we discuss what these transits might tell us about the magnetic activity and the atmosphere of a star.
NASA is looking for a new mission for the damaged Kepler space telescope. Here are some ideas.
Highlights from the International Astronomical Union Symposium on “Exploring the Formation and Evolution of Planetary Systems”.
Our simple formula for predicting the probability that an exoplanet will transit might miss something important.
Faigler et al. apply their BEER algorithm to a collection of stars in the Kepler field and find a hot Jupiter missed by the Kepler Science Team, showing a new way to find and characterize planets without follow-up observations.
The census of planets for smaller stars—M dwarfs—is now basically complete. In this paper, Courtney Dressing and Dave Charbonneau use this M dwarf advantage to determine the occurrence rate of small planets around M dwarfs.
By looking for variations in the observed periods for eclipsing binary stars, astronomers have found evidence that a sizable fraction of these systems are actually systems of three or more stars.
The leading theory is that hot Jupiters tend to occur in single planet systems, but Szabo et al. find evidence that some hot Jupiters might reside in multi-planet systems. Are hot Jupiters actually lonely?
Is it a comet or a planet?
Last year, I reported on how the mystery of 55 Cancri e was resolved. In this Letter, Demory et al. observe the secondary eclipses of 55 Cnc e (when the planet passes behind the star), allowing them to determine the planet’s temperature. At 3,800 degrees Fahrenheit: this super Earth is not looking like a good vacation spot. They are also able to explore possible compositions for the planet.