Jennifer E. Andrews et al 2021 ApJ 917 63
Archival observations from Hubble, Spitzer, and the Large Binocular Telescope of a “supernova imposter” detected in 2019 reveal it to be either a blue supergiant or a dust-shrouded luminous blue variable star.
L. J. Allamandola et al 2021 ApJL 917 L35
Spectra from the James Webb Space Telescope may capture emission features of polycyclic aromatic hydrocarbons, potentially constraining the amount of cosmological heavy hydrogen sequestered in these molecules.
Roy A. Tucker et al 2021 ApJS 256 1
Activity within the stellar chromosphere or the presence of a disk of planetary debris may be the cause of the strange behavior of a short-period (6.65 days) variable star.
Young Min Seo et al 2021 ApJ 917 57
Magnetic fields threaded through the Keyhole Nebula in the Carina Nebula Complex — the most energetic star-forming region in our galaxy — are no match for the extreme stellar winds from η Carinae.
Chong Li et al 2021 ApJL 918 L2
A 3,500-light-year-long gas filament at a distance of more than 70,000 light-years has been discovered using the Five-hundred-meter Aperture Spherical radio Telescope (FAST).
Laura Venuti et al 2021 AJ 162 101
A survey of 278 young stars with masses in the 2–5 solar mass range reveals that magnetic field structures and variability, including disk-driven variability, depend on stellar mass.