金牛座BP

金牛座BP是在金牛座的一顆年輕的金牛T星，屬於金牛座分子雲，距離太陽大約7002416000000000000♠416 光年。 金牛座BP仍然以6990900000000000000♠9×10−10 太陽質量和6993160000000000000♠1.6×10−7 太陽質量/年的低速率吸積質量，正如落入物質產生的X射線所證明的那樣，並且可能仍在旋轉過程中。它的色球磁場相當強，為2.5+0.15 −0.16千高斯，並含有強的非偶極子成分。這顆恆星有40%的光度是通過吸積釋放的能量產生。 金牛座BP有兩個可疑的恆星伴星，預計分離3.00和7000545000000000000♠5.45 弧秒。不過現在已經被蓋亞任務的數據證明，是與金牛座BP無關的背景恆星。 這顆恆星被原行星盤包圍。圓盤中強烈的在消耗碳和一氧化碳。 由於不穩定的吸積而產生強烈的耀斑，與恆星磁場控制，使金牛座BP有著不同的亮度。光變曲線週期在 6.1 至 7.6 天之間變化，並且已知也有沒有變化的靜止週期。 MAST: Barbara A. Mikulski Archive for Space Telescopes. Space Telescope Science Institute. [8 December 2021]. （原始内容存档于2023-03-27）.  V* BP Tau. SIMBAD. 斯特拉斯堡天文資料中心.  Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 .  已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR. Simon, M.; Dutrey, A.; Guilloteau, S., Dynamical Masses of T Tauri Stars and Calibration of Pre–Main‐Sequence Evolution, The Astrophysical Journal, 2000, 545 (2): 1034–1043, Bibcode:2000ApJ...545.1034S, S2CID 18064837, arXiv:astro-ph/0008370 , doi:10.1086/317838  Errico, L.; Lamzin, S. A.; Vittone, A. A., UV spectra of T Tauri stars from the HST and IUE satellites: BP Tau, Astronomy & Astrophysics, 2001, 377 (2): 557–565, Bibcode:2001A&A...377..557E, doi:10.1051/0004-6361:20011108   Flores, C.; Connelley, M. S.; Reipurth, B.; Boogert, A., Measuring the Magnetic Field of Young Stars Using iSHELL Observations: BP Tau and V347 Aur, The Astrophysical Journal, 2019, 882 (2): 75, Bibcode:2019ApJ...882...75F, S2CID 201645503, arXiv:1908.08583 , doi:10.3847/1538-4357/ab35d4  Long, M.; Romanova, M. M.; Kulkarni, A. K.; Donati, J.-F., Global 3D simulations of disc accretion on to the classical T Tauri star BP Tauri, Monthly Notices of the Royal Astronomical Society, 2010, 413 (2): 1061–1071, S2CID 55134816, arXiv:1009.3300 , doi:10.1111/j.1365-2966.2010.18193.x  Schmitt, J. H. M. M.; Robrade, J.; Ness, J.-U.; Favata, F.; Stelzer, B., X-rays from accretion shocks in T Tauri stars: The case of BP Tau, Astronomy & Astrophysics, 2005, 432 (2): L35–L38, Bibcode:2005A&A...432L..35S, S2CID 2457531, arXiv:astro-ph/0503144 , doi:10.1051/0004-6361:200500014  Ireland, Lewis G.; Zanni, Claudio; Matt, Sean P.; Pantolmos, George, Magnetic Braking of Accreting T Tauri Stars: Effects of Mass Accretion Rate, Rotation, and Dipolar Field Strength, The Astrophysical Journal, 2020, 906: 4, S2CID 226236865, arXiv:2011.01087 , doi:10.3847/1538-4357/abc828  Long, Min; Romanova, Marina M.; Lamb, Frederick K., Accretion onto stars with octupole magnetic fields: Matter flow, hot spots and phase shifts, New Astronomy, 2009, 17 (2): 232–245, Bibcode:2012NewA...17..232L, S2CID 119113916, arXiv:0911.5455 , doi:10.1016/j.newast.2011.08.001  Itoh, Yoichi; Tamura, Motohide; Hayashi, Masahiko; Oasa, Yumiko; Hayashi, Saeko S.; Fukagawa, Misato; Kudo, Tomoyuki; Mayama, Satoshi; Ishii, Miki; Pyo, Tae-Soo; Yamashita, Takuya; Morino, Junichi. Near-Infrared Spectroscopy of Faint Companions around Young Stellar Objects Associated with the Taurus Molecular Cloud. Publications of the Astronomical Society of Japan. 2008, 60 (2): 209–218. Bibcode:2008PASJ...60..209I. doi:10.1093/pasj/60.2.209 .  Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 .  已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR. Brown, A. G. A.; et al. Gaia Early Data Release 3: Summary of the contents and survey properties. Astronomy & Astrophysics. 2021, 649: A1. Bibcode:2021A&A...649A...1G. S2CID 227254300. arXiv:2012.01533 . doi:10.1051/0004-6361/202039657 .  已忽略未知参数|collaboration= (帮助) (勘误: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR. Kama, M.; Bruderer, S.; Carney, M.; Hogerheijde, M.; Van Dishoeck, E. F.; Fedele, D.; Baryshev, A.; Boland, W.; Güsten, R.; Aikutalp, A.; Choi, Y.; Endo, A.; Frieswijk, W.; Karska, A.; Klaassen, P.; Koumpia, E.; Kristensen, L.; Leurini, S.; Nagy, Z.; Perez Beaupuits, J. -P.; Risacher, C.; Van Der Marel, N.; Van Kempen, T. A.; Van Weeren, R. J.; Wyrowski, F.; Yıldız, U. A. Observations and modelling of CO and [C I] in protoplanetary disks. First detections of [C I] and constraints on the carbon abundance. Astronomy and Astrophysics. 2016, 588: 588. Bibcode:2016A&A...588A.108K. S2CID 53941444. arXiv:1601.01449 . doi:10.1051/0004-6361/201526791.  Dutrey, A.; Guilloteau, S.; Simon, M. The BP Tau disk: A missing link between Class II and III objects?. Astronomy and Astrophysics. 2003, 402 (3): 1003. Bibcode:2003A&A...402.1003D. doi:10.1051/0004-6361:20030317 .  Simon, Theodore; Vrba, Frederick J.; Herbst, William. The Ultraviolet and Visible Light Variability of BP Tauri: Possible Clues for the Origin of T Tauri Star Activity. The Astronomical Journal. 1990, 100: 1957. Bibcode:1990AJ....100.1957S. doi:10.1086/115651.