Anthony Carr and Tamara Davis 2021 ApJ 914 97
A small systematic error is identified in the NASA/IPAC Extragalactic Database (NED) and the effects are described on the reported redshifts in this catalog of millions of astrophysical objects.
M. Amiri et al 2021 ApJS 255 5
The CHIME digital pulsar observing system can monitor 400–500 pulsar positions once per sidereal day and observe most sources with declinations greater than −20° once every ~4 weeks.
Michael K. Shepard et al 2021 Planet. Sci. J. 2 125
A new shape model of asteroid 16 Psyche, built from observations spanning a wide range of wavelengths, predicts the asteroid’s overall radar albedo and suggests its upper meter of regolith has significant metal content.
Benjamin Boe et al 2021 ApJL 914 L39
The December 2020 solar eclipse provided the opportunity to study in detail a “double-bubble” coronal-mass-ejection structure as it erupted from the solar surface and extended out to over 5 solar radii.
Michael P. Busch et al 2021 ApJ 914 72
Extemely broad, faint OH emission has been discovered toward the outer region of the Milky Way, suggesting the presence of extremely diffuse, unseen molecular gas in the geometry of a thick disk in the outer galaxy.
Ava Polzin et al 2021 ApJL 914 L23
The serendipitously discovered COSMOS-dw1 is the first known example beyond the immediate vicinity of the Local Group of a dwarf galaxy that appears to have quenched in isolation.