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A multi-planetary system orbiting the early-M dwarf TOI-1238
E. González-Álvarez, M. R. Zapatero Osorio, J. Sanz-Forcada +53
Two transiting planet candidates with super-Earth radii around the nearby K7--M0 dwarf star TOI-1238 were announced by TESS. We aim to validate their planetary nature using precise…
A black hole detected in the young massive LMC cluster NGC 1850
S. Saracino, S. Kamann, M. G. Guarcello +8
We report the detection of a black hole (NGC 1850 BH1) in the 100 Myr-old massive cluster NGC~1850 in the Large Magellanic Cloud. It is in a binary system with a main-sequenc…
The CARMENES search for exoplanets around M dwarfs. Stellar atmospheric parameters of target stars with SteParSyn
Emilio Marfil, Hugo M. Tabernero, David Montes +24
We determined effective temperatures, surface gravities, and metallicities for a sample of 343 M dwarfs observed with CARMENES, the double-channel, high-resolution spectrograph ins…
Diving Beneath the Sea of Stellar Activity: Chromatic Radial Velocities of the Young AU Mic Planetary System
Bryson Cale, Michael Reefe, Peter Plavchan +52
We present updated radial-velocity (RV) analyses of the AU Mic system. AU Mic is a young (22 Myr) early M dwarf known to host two transiting planets - days, $R_{b}=…
TOI-1201 b: A mini-Neptune transiting a bright and moderately young M dwarf
D. Kossakowski, J. Kemmer, P. Bluhm +62
We present the discovery of a transiting mini-Neptune around TOI-1201, a relatively bright and moderately young early M dwarf ( 9.5 mag, 600-800 Myr) in an equal-m…
A stellar census in globular clusters with MUSE. A new perspective on the multiple main sequences of Centauri
M. Latour, A. Calamida, T. -O. Husser +3
Cen is a rare example of a globular cluster where the iron abundance of the stars spans more than one order of magnitude. Many spectroscopic investigations of its red-giant- an…