5 papers
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…
Observational Signatures of a Previous Dynamical Instability in Multi-planet M-Dwarf Systems
Anna C. Childs, Alexa P. S. Hua, Rebecca G. Martin +2
We identify observational signatures suggesting a history of dynamical instability in 26 out of 34 M-dwarf multi-planet systems containing no large planets. These systems may have…
Stellar Spin Down in Post-Mass Transfer Binary Systems
Meng Sun, Seth Gossage, Emily M. Leiner +1
Motivated by measurements of the rotation speed of accretor stars in post-mass-transfer (post-MT) systems, we investigate how magnetic braking affects the spin-down of individual s…
Relativistic Effects on Circumbinary Disk Evolution: Breaking the Polar Alignment around Eccentric Black Hole Binary Systems
Anna C. Childs, Rebecca G. Martin, C. J. Nixon +4
We study the effects of general relativity (GR) on the evolution and alignment of circumbinary disks around binaries on all scales. We implement relativistic apsidal precession of…
Wind Roche-lobe Overflow in Low-Mass Binaries: Exploring the Origin of Rapidly Rotating Blue Lurkers
Meng Sun, Sasha Levina, Seth Gossage +4
Wind Roche-Lobe Overflow (WRLOF) is a mass-transfer mechanism proposed by Mohamed and Podsiadlowski (2007) for stellar binaries wherein the wind acceleration zone of the donor star…