DH Tauri
 DH Tauri and the b companion (lower left) with theVery Large Telescope Credit:ESO VLTSPHERE;Van Holstein et al.; Processing: Meli_thev | |
| Observation data EpochJ2000.0EquinoxJ2000.0 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h29m41.558s[1] |
| Declination | +26° 32′ 58.27″[1] |
| Apparent magnitude(V) | 13.1[2] |
| Characteristics | |
| Spectral type | M0-M1Ve(T)[3] |
| Variable type | T Tau[3] |
| Astrometry | |
| Proper motion(μ) | RA:+7.065[4]mas/yr Dec.:-20.699[4]mas/yr |
| Parallax(π) | 7.3880 ±.0593mas[4] |
| Distance | 441 ± 4ly (135 ± 1pc) |
| Details | |
| Mass | 0.41[5]M☉ |
| Radius | 1.26[5]R☉ |
| Luminosity | 0.22[5]L☉ |
| Temperature | 3,751[4]K |
| Age | 3.16[5]Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
DH Tauri,also known asDH Tau,is atype Mstar, located 140parsecs(456.619light years) away. It forms abinary systemwithDI Tauri15″away, and has asubstellar companion,either abrown dwarfor massiveexoplanet.
Characteristics
[edit]DH Tauri is a type M, orred dwarfstar, one of the most common types ofstarin the Milky Way.[6]It has anapparent magnitudeof 13.71 and temperature of3,751K.DH Tauri has a mass of 0.41M☉and an estimated radius of 1.26R☉.
The companion DH Tauri B or b has a mass estimated to be betweeneightMJand50MJ,making it either asuper-Jupiterorbrown dwarf.[7][8]Other sources give a mass as high as 0.03M☉,with abolometric luminosityof 0.01L☉.[9]The spectral type has been classified as M7.5[9]or M9.25.[10]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).[11]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.[12]
References
[edit]- ^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.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.
- ^abcdBrown, A. G. A.;et al. (Gaia collaboration) (August 2018)."GaiaData Release 2: Summary of the contents and survey properties ".Astronomy & Astrophysics.616.A1.arXiv:1804.09365.Bibcode:2018A&A...616A...1G.doi:10.1051/0004-6361/201833051.Gaia DR2 record for this sourceatVizieR.
- ^abcdHerczeg, Gregory J.; Hillenbrand, Lynne A. (2014). "An Optical Spectroscopic Study of T Tauri Stars. I. Photospheric Properties".The Astrophysical Journal.786(2): 97.arXiv:1403.1675.Bibcode:2014ApJ...786...97H.doi:10.1088/0004-637X/786/2/97.S2CID36942035.
- ^"Exoplanet-catalog".Exoplanet Exploration: Planets Beyond our Solar System.Retrieved2021-03-08.
- ^Xuan, Jerry W.; Bryan, Marta L.; Knutson, Heather A.; Bowler, Brendan P.; Morley, Caroline V.; Benneke, Björn (2020)."A Rotation Rate for the Planetary-mass Companion DH Tau B".The Astronomical Journal.159(3): 97.arXiv:2001.01759.Bibcode:2020AJ....159...97X.doi:10.3847/1538-3881/ab67c4.S2CID210023665.
- ^Itoh, Yoichi; Hayashi, Masahiko; Tamura, Motohide; Tsuji, Takashi; Oasa, Yumiko; Fukagawa, Misato; Hayashi, Saeko S.; Naoi, Takahiro; Ishii, Miki; Mayama, Satoshi; Morino, Jun‐ichi; Yamashita, Takuya; Pyo, Tae‐Soo; Nishikawa, Takayuki; Usuda, Tomonori (2005-02-20)."A Young Brown Dwarf Companion to DH Tauri".The Astrophysical Journal.620(2): 984–993.arXiv:astro-ph/0411177.Bibcode:2005ApJ...620..984I.doi:10.1086/427086.ISSN0004-637X.
- ^abWard-Duong, K.; Patience, J.; Bulger, J.; Van Der Plas, G.; Ménard, F.; Pinte, C.; Jackson, A. P.; Bryden, G.; Turner, N. J.; Harvey, P.; Hales, A.; De Rosa, R. J. (2018)."The Taurus Boundary of Stellar/Substellar (TBOSS) Survey. II. Disk Masses from ALMA Continuum Observations".The Astronomical Journal.155(2): 54.arXiv:1712.07669.Bibcode:2018AJ....155...54W.doi:10.3847/1538-3881/aaa128.S2CID55142673.
- ^Bonnefoy, M.; Chauvin, G.; Lagrange, A. -M.; Rojo, P.; Allard, F.; Pinte, C.; Dumas, C.; Homeier, D. (2014). "A library of near-infrared integral field spectra of young M-L dwarfs".Astronomy and Astrophysics.562:A127.arXiv:1306.3709.Bibcode:2014A&A...562A.127B.doi:10.1051/0004-6361/201118270.S2CID53064211.
- ^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.
- ^Lazzoni, C.; et al. (20 July 2020). "The search for disks or planetary objects around directly imaged companions: A candidate around DH Tau B".Astronomy & Astrophysics.641:A131.arXiv:2007.10097.Bibcode:2020A&A...641A.131L.doi:10.1051/0004-6361/201937290.S2CID220647289.
