M stars are the most common stars in the Universe. They have a mass ranging between 0.6 and 0.08 Solar masses in the main sequence, and an effective temperature ranging between 3900 K and 2400 K. In these stars, the signals due to the presence of planets, such as radial velocity (periodic oscillations of the star from its rest position
In the last years, stars of spectral class M (which are stars with effective temperatures between 2400 and 3700 K and masses between 0.08 and 0.45 solar masses) have been extensively observed for the search of exoplanets. This both because they are the most abundant class of stars in the Galaxy, and because the low star/planet mass ratio, compared to
Domenica 5 febbraio alle ore 11, alla libreria La Feltrinelli, numerosi bambini hanno partecipato al laboratorio Astrokids “A caccia di pianeti extra solari”, imparando come vengono scoperti i pianeti che orbitano attorno ad altre stelle, che caratteristiche possa avere un pianeta extra solare e cosa voglia dire zona abitabile. A guidarli in queste interessanti scoperte un’ospite d’eccellenza, l’astronomo Laura Affer dell’INAF
