Ian Czekala et al 2021 ApJ 912 6
ALMA observations of TWA 3, a nearby, young (~10 Myr) hierarchical system composed of three pre-main-sequence M3–M4.5 stars, reveal the presence of a circumbinary protoplanetary disk around TWA 3A.
Jun Hashimoto et al 2021 AJ 161 264
ALMA observations of a protoplanetary disk surrounding ZZ Tau IRS reveal asymmetry that points to giant planet formation around this low-mass star — an outcome that challenges existing core accretion models.
Shannon M. MacKenzie et al 2021 Planet. Sci. J. 2 77
Orbilander, a mission concept that would first orbit and then land on Saturn’s moon Enceladus, could collect and analyze plume material from orbit and the moon’s surface to search for life.
Vihang Mehta et al 2021 ApJ 912 49
A study of 543 star-forming clumps in the local universe have allowed scientists to statistically analyze their properties, revealing no evidence of a gradient in clump ages or masses as a function of their galactocentric distances.
Rieko Momose et al 2021 ApJL 912 L24
New analysis shows that Lyα-emitting galaxies may not faithfully trace the cosmic web of neutral hydrogen; instead, their distribution is likely biased depending on the viewing direction.
Jamila Pegues et al 2021 ApJ 911 150
New ALMA observations suggest that most of the observable chemistry at 10–100 au is similar for solar-type and M4–M5 protoplanetary disks, but hydrocarbons may be more abundant around the cooler stars.