How would the spectrum of the Earth change if our planet orbited a hotter or cooler star? Would alien astronomers still be able to detect signs of life?
Can we infer the presence of multiple planets by monitoring how a star’s brightness changes outside of planetary transit?
How long does planetary migration take? Crockett et al. look for the answer by searching for hot Jupiters around extremely young stars.
Astronomers recently announced the discovery of a short period Earth-mass planet in the Alpha Centauri system. Could Earth-mass planets exist in the habitable zones of binary stars?
Low-mass stars are notoriously hard to model. What does the discovery of three new low-mass stars in binaries with Sun-like stars tell us about low-mass stars?
Are you a graduate student interested in writing article summaries for astrobites? If so, please fill out the interest form and send us an email at firstname.lastname@example.org with a PDF of a sample astrobite by the application deadline of November 1. Your astrobite should summarize an astrophysics journal article that has not been featured on [...]
Astronomers often refer to elliptical galaxies as “red and dead” because they appear red in color and aren’t currently forming stars. In this paper, the authors present evidence that elliptical galaxies might not be as dead as we assume.
How well do stellar models match? Would astronomers using different stellar models and identical data determine consistent fits?
Over the past two weeks, several astrobites authors have been attending the 28th General Assembly of the International Astronomical Union in Beijing, China. Like the semi-annual AAS meetings in the United States, the IAU General Assemblies are large meetings covering a range of topics in astronomy. Each meeting is subdivided into symposia, special sessions, and [...]
Could the strange transit-light signature seen in the light curve of a Kepler target be caused by a transiting dust cloud?