"brown dwarfs, are we stupid or you are just different?"


Brown dwarfs are the latest discovered population on the HR diagram. They formed like stars but appearing like gaseous planets, thus bridging the gap between stars and planets. I will briefly introduce the research history of brown dwarfs and summarize the properties of known brown dwarfs. Then, I will explain the new discovered substellar transition zone formed by transitional brown dwarfs, and discuss the difference between brown dwarfs and exoplanets. At the end, I will show some discoveries of new L subdwarfs from Gaia.