Product Code Database
DH Tauri, also known as DH Tau, is a type M star, located 140 Parsec (456.619 Light-year) away. It forms a binary system with DI Tauri away, and has a substellar companion, either a brown dwarf or massive exoplanet.
The companion DH Tauri B or b has a mass estimated to be between and , making it either a super-Jupiter or brown dwarf. Other sources give a mass as high as , with a bolometric luminosity of . The spectral type has been classified as M7.5 or M9.25. The companion has detected water vapor and carbon monoxide in its atmosphere and has a rotational velocity of 9.6 ± 0.7 km/s. This is between 9 and 15% of the breakup speed of DH Tau B. This low rotation is in agreement with Magnetism coupling to a circumplanetary disk in the late stages of accretion, which reduces angular momentum of the companion. The companion, while its host star still having a protoplanetary disk, is still accreting material, being surrounded by a circumsubstellar disk (possibly a circumplanetary disk, depending on its formation history). It is potentially orbited by a smaller candidate companion DH Tauri Bb (possibly an exomoon) with , and a mass ratio with respect to the brown dwarf of one-tenth.
|
|
