DH Tauri is a type M, orred dwarf star, one of the most common types ofstar in the Milky Way.[6] It has anapparent magnitude of 13.71 and temperature of3,751 K. DH Tauri has a mass of 0.41 M☉ and an estimated radius of 1.26 R☉, which is unusually large for a red dwarf.
The companion DH Tauri B or b has a mass estimated to be betweeneightMJ and50MJ, making it either asuper-Jupiter orbrown dwarf.[7][8] Other sources give a mass as high as 0.03 M☉, with abolometric luminosity of 0.01 L☉.[9] The spectral type has been classified as M7.5[9] or M9.25.[10] 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 withmagnetic coupling to a circumplanetary disk in the late stages of accretion, which reduces angular momentum of the companion.[11] The companion, while its host star still having aprotoplanetary disk, is still accreting material, being surrounded by a circumsubstellar disk (possibly acircumplanetary disk, depending on its formation history).[12] It is potentially orbited by a smaller candidate companion DH Tauri Bb (possibly anexomoon) with1MJ, and a mass ratio with respect to the brown dwarf of one-tenth.[13]
^abCutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003)."VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)".CDS/ADC Collection of Electronic Catalogues.2246: II/246.Bibcode:2003yCat.2246....0C.
^Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".VizieR On-line Data Catalog.2237.Bibcode:2002yCat.2237....0D.
^abSamus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)".VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S.1: B/GCVS.Bibcode:2009yCat....102025S.
^Van Holstein, R. G.; Stolker, T.;Jensen-Clem, R.; Ginski, C.; Milli, J.; De Boer, J.; Girard, J. H.; Wahhaj, Z.; Bohn, A. J.; Millar-Blanchaer, M. A.; Benisty, M.; Bonnefoy, M.; Chauvin, G.; Dominik, C.; Hinkley, S.; Keller, C. U.; Keppler, M.; Langlois, M.; Marino, S.; Ménard, F.; Perrot, C.; Schmidt, T. O. B.; Vigan, A.; Zurlo, A.; Snik, F. (2021). "A survey of the linear polarization of directly imaged exoplanets and brown dwarf companions with SPHERE-IRDIS. First polarimetric detections revealing disks around DH Tau B and GSC 6214-210 B".Astronomy and Astrophysics.647: 647.arXiv:2101.04033.Bibcode:2021A&A...647A..21V.doi:10.1051/0004-6361/202039290.S2CID231573543.
