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Criteria for Dynamical Timescale Mass Transfer of Metal-poor Intermediate-mass Stars
(2023-03-01)
The stability criteria of rapid mass transfer and common-envelope evolution are fundamental in binary star evolution. They determine the mass, mass ratio, and orbital distribution of many important systems, such as X-ray ...
SCATTER: A New Common Envelope Formalism
(2023-02-14)
One of the most mysterious astrophysical states is the common envelope (CE) phase of binary evolution, in which two stars are enshrouded by the envelope shed by one of them. Interactions between the stars and the envelope ...
Patchy Forsterite Clouds in the Atmospheres of Two Highly Variable Exoplanet Analogs
(2023-02-01)
We present an atmospheric retrieval analysis of a pair of highly variable, ∼200 Myr old, early T type planetary-mass exoplanet analogs SIMP J01365662+0933473 and 2MASS J21392676+0220226 using the Brewster retrieval framework. ...
Can Neutron Star Mergers Alone Explain the r-process Enrichment of the Milky Way?
(2023-01-30)
Comparing Galactic chemical evolution models to the observed elemental abundances in the Milky Way, we show that neutron star mergers can be a leading r-process site only if at low metallicities such mergers have very short ...
3D Selection of 167 Substellar Companions to Nearby Stars
(2022-08-26)
We analyze 5108 AFGKM stars with at least five high-precision radial velocity points, as well as Gaia and Hipparcos astrometric data, utilizing a novel pipeline developed in previous work. We find 914 radial velocity signals ...