Blue straggler stars in old open clusters exhibit a Kraft break in rotation, with rapid rotators above the break and slow rotators below, indicating their envelopes behave like those of single stars.
Properties and validation of the radial velocities
11 Pith papers cite this work. Polarity classification is still indexing.
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A neural network trained on simulations infers stripping times for Sagittarius stream stars from phase-space data, measuring a 0.3 dex/Gyr metallicity gradient and estimating ages for globular clusters such as Pal 12 and NGC 2419.
Hot Jupiter occurrence in the Galactic halo is low at ~0.13% with no significant difference between in-situ and accreted populations, well below disk rates.
Blue straggler stars in old open clusters predominantly appear near the terminal-age main sequence because mass transfer from asymptotic giant branch donors enriches their cores with helium.
Simulations show Lindblad-resonance wrinkles from non-winding spirals are filled with zero-age stars on orbits normally occupied by much older populations, offering an age-based constraint on past transient spiral patterns.
Gravitational redshift data for SDSS J060851.44-005950.3 favor an oxygen-neon core with Bayes factor 2.7 over carbon-oxygen.
The Via Project is a planned five-year dual-hemisphere spectroscopic survey targeting over 2 million stars with 100 m/s RV stability and transient spectroscopy to r~24 using instruments on MMT and Magellan/Clay telescopes starting in 2027.
A lithium chemical evolution model for the GSE galaxy matches survey data showing Spite-like and eRGB plateaus at low metallicity with a hint of reduced nova contributions.
New SOAR speckle data resolve 400+ previously unseen binary pairs and deliver orbital elements for 202 systems with quantified errors.
Gaia DR3 data favors flattened disk-like dark matter over spherical halos in the Milky Way.
Laser-sail picospacecraft swarms could deliver gigapixel imaging of Proxima b during near-relativistic flybys and detect signs of surface life or civilization.
citing papers explorer
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The Via Project: Overview of the Science, Instrument, and Survey
The Via Project is a planned five-year dual-hemisphere spectroscopic survey targeting over 2 million stars with 100 m/s RV stability and transient spectroscopy to r~24 using instruments on MMT and Magellan/Clay telescopes starting in 2027.
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Science from the In Situ Exploration of the Proxima Centauri System
Laser-sail picospacecraft swarms could deliver gigapixel imaging of Proxima b during near-relativistic flybys and detect signs of surface life or civilization.