3 papers
astro-ph.SR2026
Ongoing and Post-Mass-Transfer Binaries: A Living Catalog and Unified Review of Binary Mass Transfer Products
Lieke A. C. van Son, Natsuko Yamaguchi, Pranav Nagarajan +6
Mass transfer is arguably the most defining interaction in binary stellar systems, yet many aspects of its physics remain poorly understood, from stability to endpoints and observa…
astro-ph.SR2026
Gaia astrometry disfavors a binary origin for long secondary periods
Cheyanne Shariat, Kareem El-Badry, Morgan MacLeod +1
Approximately one-third of luminous pulsating red giant stars exhibit long secondary periods (LSPs): stable photometric variability with periods of several months to years in addit…
astro-ph.SR2025
The Blue Lurker WOCS 14020: A Long-Period Post-Common-Envelope Binary in M67 Originating from a Merger in a Triple System
Emily M. Leiner, Natalie M. Gosnell, Aaron M. Geller +3
We present Hubble Space Telescope far-ultraviolet (FUV) spectra of a blue-lurkerwhite-dwarf (BL-WD) binary system in the 4 Gyr open cluster M67. We fit the FUV spectrum of the W…