金牛座CQ
观测资料 历元 J2000.0 | |
---|---|
星座 | 金牛座 |
星官 | |
赤经 | 05h 35m 58.467s[2] |
赤纬 | 24° 44′ 54.09″[2] |
视星等(V) | 10.48[3] () 8.7 to 12.25[4] |
特性 | |
演化阶段 | 主序前星[5] |
光谱分类 | F5IVe[6] |
B−V 色指数 | 0.696+0.091 −[3] |
变星类型 | 猎户型变星[4] |
天体测定 | |
径向速度 (Rv) | 22.60+2.7 −[7] km/s |
自行 (μ) | 赤经:2.987 mas/yr 赤纬:−26.364 mas/yr |
视差 (π) | 6.6946 ± 0.0600[2] mas |
距离 | 487 ± 4 ly (149 ± 1 pc) |
绝对星等 (MV) | 5.92[8] |
详细资料 | |
质量 | 1.67[9] M☉ |
半径 | 1.7[10] R☉ |
表面重力 (log g) | 4.0[8] |
亮度 | 10[9] L☉ |
温度 | 6,900[9] K |
金属量 [Fe/H] | +0.14[11] dex |
自转速度 (v sin i) | 105.0+5.0 −[6] km/s |
年龄 | 10[9] Myr |
其他命名 | |
参考数据库 | |
SIMBAD | 资料 |
金牛座CQ是位于黄道星座金牛座的一颗年轻变星[5]。它太微弱了,视星等的范围在 8.7 to 12.25[4],因此肉眼无法直接看到。基于视差测量,这颗恒星的距离大约是487光年,并以~23Km/s的径向速度远离太阳系[7]。它似乎是T-星协金牛4的成员[8]。金牛座CQ离黄道足够近,因此会发生月掩星的天象[13]。
这颗恒星在1948年被阿尔朱基诺夫(Artjukinov,sp?)和1949年被库诺·霍夫迈斯特独立报导为一颗变星[14]。霍夫迈斯特将其归类为类似御夫座RW变星,亮度范围从8.7等到10.5等[15], 使其成为该类型中最明亮的成员之一[14]。G·H·赫比格在1960年发现了这颗恒星的光谱为F2[16],到1973年,它被归类为猎户型变星的金牛T星。 [17]。在1968年,沃尔德玛律·格茨和W.温泽尔发现来自系统的微弱蓝光发射[18]。
1973年该系统的光谱图像在F型恒星上显示双发射线[19]。它被IRAS发现为红外源,并与星云相关联,这使得它能够在1994年被P. S. Thé和同事编目为赫比格Ae/Be星[20]。恒星经历不规则的亮度降低,在其他方面类似于大陵五型变星。 它有一个不均匀的吸积盘绕行着,这是发射线的来源[21]。
金牛座CQ是一颗主序前星,恒星分类为F5IVe[6]。它的质量是太阳的1.67倍,辐射亮度是太阳的10倍,表面有效温度为6,900K。这颗恒星大约有1,000万年的历史[9],并且以105km/s的投影旋转速度旋转[6]。旨在再现星周盘分布的模拟表明,一颗距离为,质量为 ~20 AUMJ的 6–9 行星嵌入盘中,正在围绕该恒星运行[9]。2018年的近红外观测显示,圆盘中存在螺旋结构,这与轨道行星的存在一致。然而,并没有发现任何行星[22]。
原行星系统
在2000年,甚大天线阵的观测证明了围绕恒星运行的大质量原行星盘的范围,估计盘面中的灰尘质量为×10−4 M☉ 1.5[23]。量测表明,金牛座CQ周围圆盘中的尘粒已生长到最大约一厘米大小[24],与主星相距AU以外的晶粒尺寸逐渐减小 40 [25]。来自阿塔卡玛大型毫米及次毫米波阵列的资料显示,内盘中有一个里面的气体和灰尘都耗尽了的空腔[9]。孤立的、厚厚的尘埃云随机地遮蔽著这颗恒星[26]。
在2022年,探测到原行星盘中的四个旋臂。怀疑是被一颗位于偏心倾斜轨道上,尚未发现的行星扰乱了圆盘的形状[27]。
参考资料
- ^ OMC Archive. OMC Archive. The Astronomical Data Centre at CAB. [19 December 2021]. (原始内容存档于2022-11-30).
- ^ 2.0 2.1 2.2 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. - ^ 3.0 3.1 Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, S2CID 119257644, arXiv:1108.4971
, doi:10.1134/S1063773712050015.
- ^ 4.0 4.1 4.2 Samus, N. N.; et al, General Catalogue of Variable Stars, Astronomy Reports, 5.1, 2017, 61 (1): 80–88, Bibcode:2017ARep...61...80S, S2CID 125853869, doi:10.1134/S1063772917010085.
- ^ 5.0 5.1 Testi, L.; et al, Large grains in the disk of CQ Tau, Astronomy and Astrophysics, May 2003, 403: 323–328, Bibcode:2003A&A...403..323T, S2CID 14936233, arXiv:astro-ph/0303420
, doi:10.1051/0004-6361:20030362.
- ^ 6.0 6.1 6.2 6.3 Mora, A.; et al, EXPORT: Spectral classification and projected rotational velocities of Vega-type and pre-main sequence stars, Astronomy & Astrophysics, 2001, 378 (1): 116–131, Bibcode:2001A&A...378..116M, doi:10.1051/0004-6361:20011098
.
- ^ 7.0 7.1 Gontcharov, G. A., Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system, Astronomy Letters, November 2006, 32 (11): 759–771, Bibcode:2006AstL...32..759G, S2CID 119231169, arXiv:1606.08053
, doi:10.1134/S1063773706110065.
- ^ 8.0 8.1 8.2 Alecian, E.; et al, A high-resolution spectropolarimetric survey of Herbig Ae/Be stars - I. Observations and measurements, Monthly Notices of the Royal Astronomical Society, February 2013, 429 (2): 1001–1026, Bibcode:2013MNRAS.429.1001A, arXiv:1211.2907
, doi:10.1093/mnras/sts383.
- ^ 9.0 9.1 9.2 9.3 9.4 9.5 9.6 Giulia Ubeira Gabellini, M.; et al, A dust and gas cavity in the disc around CQ Tau revealed by ALMA, Monthly Notices of the Royal Astronomical Society, July 2019, 486 (4): 4638–4654, Bibcode:2019MNRAS.486.4638U, arXiv:1905.00909
, doi:10.1093/mnras/stz1138.
- ^ Stassun, Keivan G.; et al, The Revised TESS Input Catalog and Candidate Target List, The Astronomical Journal, September 9, 2019, 158 (4): 138, Bibcode:2019AJ....158..138S, ISSN 0004-6256, arXiv:1905.10694
, doi:10.3847/1538-3881/ab3467
.
- ^ Bochanski, John J.; et al, Fundamental Properties of Co-moving Stars Observed by Gaia, The Astronomical Journal, March 13, 2018, 155 (4): 149, Bibcode:2018AJ....155..149B, ISSN 0004-6256, S2CID 119256051, arXiv:1801.00537
, doi:10.3847/1538-3881/aaaebe.
- ^ [ 请检查
|url=
值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. CQ Tau] - ^ Cassar, L.; et al, Lunar Occultations of IRAS Point Sources, 1991--2000, Astrophysical Journal Supplement, March 1989, 69: 651, Bibcode:1989ApJS...69..651C, doi:10.1086/191323. See table p. 658, IRAS 05328+2443.
- ^ 14.0 14.1 Ashbrook, J., HD 36910: a bright variable of the RW Aurigae type, Astronomical Journal, August 1950, 55: 148, Bibcode:1950AJ.....55..148A, doi:10.1086/106374.
- ^ Hoffmeister, Cuno, Die RW Aurigae-Sterne und ihre Nebenformen, Astronomische Nachrichten, November 1949, 278: 24, Bibcode:1949AN....278...24H, doi:10.1002/asna.19492780102 (德语). Listed as "S 3942 Tau".
- ^ Herbig, G. H., Spectral Classifications for 112 Variable Stars, Astrophysical Journal, May 1960, 131: 632, Bibcode:1960ApJ...131..632H, doi:10.1086/146876.
- ^ Cohen, M., Infra-red observations of young stars - II. T Tauri stars and the Orion population, Monthly Notices of the Royal Astronomical Society, 1973, 161: 97, Bibcode:1973MNRAS.161...97C, doi:10.1093/mnras/161.1.97.
- ^ Berdyugin, A. V.; et al, Discovery of high linear polarization at brightness minima of CQ Tau, Astronomicheskii Zhurnal, August 1990, 67: 812, Bibcode:1990AZh....67..812B.
- ^ Herbig, G. H.; Bell, K. Robbin, Third Catalog of Emission-Line Stars of the Orion Population, Lick Observatory Bulletin (Santa Cruz), Jun 1988, 1111, Bibcode:1988cels.book.....H.
- ^ The, P. S.; et al, A new catalogue of members and candidate members of the Herbig Ae/Be (HAEBE) stellar group, Astronomy and Astrophysics Supplement, April 1994, 104: 315–339, Bibcode:1994A&AS..104..315T.
- ^ Kozlova, O. V.; et al, The Accretion Activity of the Ae Herbig Star CQ Tau, Astronomy Reports, January 2000, 44 (1): 36–44, Bibcode:2000ARep...44...36K, S2CID 120162969, doi:10.1134/1.163821.
- ^ Uyama, Taichi; et al, Near-infrared Imaging of a Spiral in the CQ Tau Disk, The Astronomical Journal, March 2020, 159 (3): 9, Bibcode:2020AJ....159..118U, S2CID 204743781, arXiv:1910.07605
, doi:10.3847/1538-3881/ab7006, 118.
- ^ Testi, L.; et al, Constraints on Properties of the Protoplanetary Disks around UX Orionis and CQ Tauri, The Astrophysical Journal, June 2001, 554 (2): 1087–1094, Bibcode:2001ApJ...554.1087T, S2CID 119351472, arXiv:astro-ph/0102473
, doi:10.1086/321406.
- ^ Banzatti, A.; et al, New constraints on dust grain size and distribution in CQ Tauri, Astronomy and Astrophysics, January 2011, 525: A12, Bibcode:2011A&A...525A..12B, S2CID 43056575, arXiv:1009.2697
, doi:10.1051/0004-6361/201015206, A12.
- ^ Trotta, F.; et al, Constraints on the radial distribution of the dust properties in the CQ Tauri protoplanetary disk, Astronomy & Astrophysics, October 2013, 558: A64, Bibcode:2013A&A...558A..64T, S2CID 12042360, arXiv:1308.5070
, doi:10.1051/0004-6361/201321896, A64.
- ^ Dodin, A. V.; Suslina, E. A., Inhomogeneous dust eclipses in young stars: the case of CQ Tauri, Monthly Notices of the Royal Astronomical Society, June 2021, 503 (4): 5704–5714, Bibcode:2021MNRAS.503.5704D, arXiv:2102.08911
, doi:10.1093/mnras/stab487.
- ^ Hammond, Iain; Christiaens, Valentin; Price, Daniel J.; Ubeira-Gabellini, Maria Giulia; Baird, Jennifer; Calcino, Josh; Benisty, Myriam; Lodato, Giuseppe; Testi, Leonardo; Pinte, Christophe; Toci, Claudia; Fedele, Davide, External or internal companion exciting the spiral arms in CQ Tau?, Monthly Notices of the Royal Astronomical Society, 2022, 515 (4): 6109–6121, arXiv:2207.08587
, doi:10.1093/mnras/stac2119
进阶读物
- Safonov, Boris S.; et al, Apparent Motion of the Circumstellar Envelope of CQ Tau in Scattered Light, The Astronomical Journal, January 2022, 163 (1): 31, Bibcode:2022AJ....163...31S, S2CID 242757117, arXiv:2111.02726
, doi:10.3847/1538-3881/ac36cb, 31.
- Wölfer, L.; et al, A highly non-Keplerian protoplanetary disc. Spiral structure in the gas disc of CQ Tau, Astronomy & Astrophysics, April 2021, 648, Bibcode:2021A&A...648A..19W, S2CID 228064514, arXiv:2012.04680
, doi:10.1051/0004-6361/202039469, A19.
- Assani, K., Variability in the Gas and Dust Emission of the UX Orioni Star CQ Tau, Bulletin of the American Astronomical Society, January 2020, 52 (1), Bibcode:2020AAS...23545101A.
- Ubeira Gabellini, Maria Giulia, The gas and dust disk around the CQ Tau pre-main sequence star, Protoplanetary disks seen through the eyes of new-generation high-resolution instruments. Proceedings of the conference held 25–28 June 2018 in Rome, Italy, December 2018: 30, Bibcode:2018ppd..confE..30U, doi:10.5281/zenodo.1893261.
- Tax, Tomáš, Asymmetric CQ-Tau Transition Disk at High Angular Resolution, Take a Closer Look, 15–19 October 2018 in ESO-HQ, Garching b. München, Germany, November 2018: 112, Bibcode:2018tcl..confE.112T, doi:10.5281/zenodo.1488994.
- Shenavrin, V. I.; et al, Photometric activity of UX Ori stars and related objects in the near infrared and visual. BF Ori, CQ Tau, WW Vul, and SV Cep, Astronomy Reports, May 2012, 56 (5): 379–394, Bibcode:2012ARep...56..379S, S2CID 255200894, doi:10.1134/S1063772912040063.
- Chapillon, E.; et al, C I observations in the CQ Tauri proto-planetary disk: evidence of a very low gas-to-dust ratio?, Astronomy and Astrophysics, September 2010, 520: A61, Bibcode:2010A&A...520A..61C, S2CID 119177523, arXiv:1006.5244
, doi:10.1051/0004-6361/201014841, A61.
- Chapillon, E.; et al, Charbonnel, C.; et al , 编, Disks around CQ Tau and MWC 758: Dense PDRs or gas dispersal?, SF2A-2008: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, November 2008: 303, Bibcode:2008sf2a.conf..303C.
- Kozlova, O. V.; et al, Structure of the inner region of the accretion disk of the Herbig Ae star CQ Tau based on long-term monitoring data, Astrophysics, January 2007, 50 (1): 26–39, Bibcode:2007Ap.....50...26K, S2CID 120401305, doi:10.1007/s10511-007-0004-z.
- Doucet, C.; et al, Mid-infrared imaging of the circumstellar dust around three Herbig Ae stars: HD 135344, CQ Tau, and HD 163296, Astronomy and Astrophysics, December 2006, 460 (1): 117–124, Bibcode:2006A&A...460..117D, S2CID 1722324, arXiv:astro-ph/0608615
, doi:10.1051/0004-6361:20054371.
- Shakhovskoj, D. N.; et al, Analysis of the Historical Light Curve of the UX Ori Star CQ Tau, Astrophysics, April 2005, 48 (2): 135–142, Bibcode:2005Ap.....48..135S, S2CID 121443460, doi:10.1007/s10511-005-0014-7.
- Shakhovskoy, D. N.; et al, Variations of Effective Size of Dust Grains in CQ Tau, Protostars and Planets V, Proceedings of the Conference held October 24–28, 2005, in Hilton Waikoloa Village, Hawai'i. LPI Contribution No. 1286 (1286), 2005, (1286): 8119, Bibcode:2005prpl.conf.8119S.
- Minikulov, N. Kh.; et al, Investigation of light curves of young irregular variables. 1. SV CEP and CQ Tau, Astrofizika, 1993, 36: 55–60, Bibcode:1993Afz....36...55M.
- Polosukhina, N. S.; Lebedeva, L., Polarization and Brightness Variations of the Magnetic Variable HD 215441, Soviet Astronomy, December 1966, 10: 407, Bibcode:1966SvA....10..407P.