Serendipitous discovery of radio flaring behaviour from a nearby M dwarf with MeerKAT

17. 10 2021

Exoplanets

Radio signals from nearby red dwarfs could come from yet unknown exoplanets

Astronomers looked at the nearby red dwarfs to analyze radio waves coming from them. In most cases they caught waves from magnetically active stars, which was no surprise, however 4 of the stars generating radio waves were not magnetic. In their newly published study the scientists propose the signals coming from yet unseen exoplanets. If confirmed, radio signals could become a new way for detecting exoplanets.

26. 03 2023

Exoplanets

An extreme test case for planet formation: a close-in Neptune orbiting an ultracool star

20. 03 2023

Stars

Astronomers have discovered a brown dwarf orbiting the red giant HD 18438

Astronomers led by Byeong-Cheol Lee have made a groundbreaking discovery, detecting a brown dwarf orbiting the red giant HD 18438. With a radius of 89 times that of the Sun, HD 18438 is now the largest known star to be orbited by an exoplanet or brown dwarf.

15. 03 2023

Exoplanets

Planetary Population Synthesis and the Emergence of Four Classes of Planetary System Architectures

10. 03 2023

Exoplanets

Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions