Briley Lewis et al 2023 AJ 165 59

A new technique that can be used as a post-processing step in the analysis of astronomical images improves contrast by at least 10–20%, and further development of this technique should yield greater gains.

Ashish Kumar Meena et al 2023 ApJL 944 L6

Using JWST observations of a galaxy cluster, researchers may have glimpsed the second and third most distant individual stars ever seen, after the redshift 6.2 star Earendel discovered with Hubble.

Raina V. Gough et al 2023 Planet. Sci. J. 4 46

Laboratory studies show that salt deliquescence — the process of something becoming a liquid — is likely slow on Mars, which suggests that only small amounts of brines on the planet’s surface could form this way.

Tamar Faran and Re’em Sari 2023 ApJ 943 97

New calculations predict the luminosity and spectrum that result from a shock wave crossing the edge of a star, as might occur during a supernova explosion.

Colin Littlefield et al 2023 ApJL 943 L24

Researchers have discovered a highly magnetized white dwarf that, despite theoretical predictions otherwise, has not synchronized its rotational frequency to the orbital frequency of the binary system it belongs to.

Fengyue Guo et al 2023 AJ 165 40

Chemically peculiar barium stars, first discovered in the 1950s, show enhanced abundances of s-process (slow neutron capture) elements, which might result from pollution from a binary companion.