TOI-1468: A system of two transiting planets, a super-Earth and a mini-Neptune, on opposite sides of the radius valley

We report the discovery and characterization of two small transiting planets orbiting bright M3.0V star TOI-1468 (LSPM J0106+1913), whose transit signals were detected in photometric time series three sectors TESS mission. confirm planetary nature both them using precise radial velocity measurements from CARMENES MAROON-X spectrographs, supplement with ground-based photometry. A joint analysis all these data reveals that shorter-period planet, b ( P = 1.88 d), has a mass M 3.21 ± 0.24 ⊕ radius R 1.280 −0.039 +0.038 , resulting density ρ 8.39 −0.92 +1.05 g cm −3 which is consistent mostly rocky composition. For outer c 15.53 we derive 6.64 −0.68 +0.67 ,aradius 2.06 0.04 bulk 2.00 −0.19 +0.21 corresponds to core composition H/He gas envelope. These are located on opposite sides valley, making our system an interesting as there only handful other systems same properties. This can further help determine more location valley for around dwarfs and, therefore, shed light planet formation evolution scenarios.