Roman R. Rafikov 2020 ApJL 905 L35
Calculations show that several of the S stars that orbit extremely close to the supermassive black hole at our galaxy’s center experience relativistic Doppler boosting that increases their photometric variability by more than 6%.
Yongmin Yoon and Gu Lim 2020 ApJ 905 154
An investigation of tidal features in 650 early-type galaxies (ETGs) provides evidence that compact young ETGs — especially those with blue cores — and ETGs with dust lanes are involved in recent mergers.
Yin-Bi Li et al 2021 ApJS 252 3
Nearly 600 high-velocity star candidates are selected from over 10 million spectra of Data Release 7 of the Large Sky Area Multi-object Fiber Spectroscopic Telescope and the second Gaia data release.
A. Albert et al 2020 ApJ 905 76
A new catalog of TeV gamma-ray sources using 1,523 days of data from the High-Altitude Water Cherenkov Observatory represents the most sensitive survey of the northern gamma-ray sky at energies above several TeV.
Kevin B. Burdge et al 2020 ApJL 905 L7
Newly discovered ZTF J2243+5242 is only the second known eclipsing double white dwarf binary with an orbital period of less than 10 minutes. The binary, which will merge in ~400,000 yr, should be detectable by LISA.
Helen Usher et al 2020 Planet. Sci. J. 1 84
An amateur observing campaign, set up to complement the Rosetta space mission, provided temporal coverage and multiscale observations; this can aid the study of fast-changing and large-scale comet features.