CARMENES: focusing on small planets around nearby M dwarfs |
TYPE | Astrophysics Seminar |
Speaker: | Lev Tal-Or |
Affiliation: | Ariel University |
Date: | 04.01.2023 |
Time: | 14:30 - 15:30 |
Location: | Lidow 620 |
Abstract: | CARMENES is a radial-velocity (RV) survey for exoplanets around nearby M dwarf stars. Using a high-resolution dual-channel spectrograph, it provides M-star RV measurements with a precision down to ~1 m/s. In seven years of surveying >300 nearby M-dwarfs, we have detected >30 new planets, including habitable-zone Earth-mass planets (Teegarden’s Star b&c) and planets that challenge planet-formation models (GJ 3512 b). Some of the new planets are amenable for characterization by direct-imaging and astrometric instruments. CARMENES was also used to estimate the masses of ~30 transiting planets around nearby M dwarfs, including AU Mic b&c. CARMENES’ unique design allows addressing additional questions related to M dwarfs and closein planets, such as the spectroscopic manifestation of photospheric activity and rotation, magnetic field strength of active stars, and the atmospheric composition of hot massive planets. In the talk, I will give an overview of the main results from CARMENES and an outlook to its future |