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astro-ph.SR2025
Optical constraints on the coldest metal-poor population
Jerry Jun-Yan Zhang, Nicolas Lodieu, Eduardo L. MartÃn +10
The coldest metal-poor population made of T and Y dwarfs are archaeological tracers of our Galaxy because they are very old and have kept the pristine material. The optical propert…
astro-ph.SR2024
CARMENES input catalogue of M dwarfs IX. Multiplicity from close spectroscopic binaries to ultra-wide systems
C. Cifuentes, J. A. Caballero, J. González-Payo +12
Multiplicity studies greatly benefit from focusing on M dwarfs because they are often paired in a variety of configurations with both stellar and substellar objects, including exop…
astro-ph.SR2024
Hints of auroral and magnetospheric polarized radio emission from the scallop-shell star 2MASS J050827292101444
Simranpreet Kaur, Daniele Viganò, VÃctor J. S. Béjar +18
Scallop-shell stars, a recently discovered class of young M dwarfs, show complex optical light curves that are characterized by periodic dips as well as other features that are sta…