Myriam Benisty et al 2021 ApJL 916 L2
New ALMA observations reveal a circumplanetary disk around the protoplanet PDS 70 c spatially separated from the circumstellar disk and less extended than ~1.2 au in radius.
Jiayin Dong et al 2021 ApJS 255 6
A systematic search for warm Jupiter candidates — planets of more than 6 Earth radii with orbital periods of 8–200 days — around bright TESS main-sequence host stars produces a catalog of 55 candidates.
Mohamad Abbas et al 2021 ApJ 915 49
24 RR Lyrae stars are identified that might have escaped from seven globular clusters orbiting the Milky Way: Palomar 13 (Pal 13), NGC 6341 (M92), NGC 5904 (M5), NGC 5466, NGC 1261, NGC 288, and NGC 1851.
Michał J. Michałowski and Przemek Mróz 2021 ApJL 915 L33
Future telescopes like the Extremely Large Telescope may be able to resolve the lensed images of ~100 stars in the disk and 30 stars in the bulge in the background of our galaxy’s supermassive black hole.
Timothy D. Glotch et al 2021 Planet. Sci. J. 2 136
The rich diversity of volcanic features on the Moon’s Aristarchus plateau presents an opportunity for a sustained science and exploration program, enabling analysis of silicic rock and demonstration of in situ resource utilization.
Rosalba Perna et al 2021 ApJ 915 10
Rapid accretion in the dense disks around active galactic nuclei can cause neutron stars to grow to the point of exceeding the maximum mass allowed by their equation of state, leading to their collapse into black holes.