On the secular evolution of GG Tau A circumbinary disc: a misaligned disc scenario

被引:26
|
作者
Aly, Hossam [1 ]
Lodato, Giuseppe [1 ]
Cazzoletti, Paolo [2 ]
机构
[1] Univ Milan, Via Giovanni Celoria 16, I-20133 Milan, Italy
[2] Max Planck Inst Extraterr Phys, Giessenbachstr, D-85741 Garching, Germany
关键词
accretion; accretion discs; hydrodynamics; binaries: close; stars: formation; stars: individual: GG Tau A; WARP PROPAGATION; BLACK-HOLES; ACCRETION; DYNAMICS; YOUNG; RESONANCES; PLANETS;
D O I
10.1093/mnras/sty2179
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The binary system GG Tau A is observed to have a circumbinary disc with a dust ring located further out than expected, assuming a co-planar disc and a corresponding semimajor axis of 34 au. Given the binary separation, this large cavity can be explained by relaxing the assumption of a co-planar disc and instead fit the observations with a misaligned circumbinary disc around an eccentric binary with a wider semimajor axis of 60 au, consistent with fitting the proper motion data for the system. We run smoothed particle hydrodynamic simulations to check this possibility and indeed we find that a misalignment angle of 30 degrees and a binary eccentricity of 0.45 fit both the astrometric data and the disc cavity. However, such configuration could in principle be unstable to polar, rather that planar alignment. We investigate the secular evolution of this configuration and show that it is indeed stable throughout the disc lifetime.
引用
收藏
页码:4738 / 4745
页数:8
相关论文
共 50 条
  • [1] HD 143006: circumbinary planet or misaligned disc?
    Ballabio, G.
    Nealon, R.
    Alexander, R. D.
    Cuello, N.
    Pinte, C.
    Price, D. J.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2021, 504 (01) : 888 - 897
  • [2] Binary orbital evolution driven by a circumbinary disc
    Penzlin, Anna B. T.
    Kley, Wilhelm
    Audiffren, Hugo
    Schaefer, Christoph M.
    [J]. ASTRONOMY & ASTROPHYSICS, 2022, 660
  • [3] Eclipse of the V773 Tau B circumbinary disc
    Kenworthy, M.A.
    González Picos, D.
    Elizondo, E.
    Martin, R.G.
    Van Dam, D.M.
    Rodriguez, J.E.
    Kennedy, G.M.
    Ginski, C.
    Mugrauer, M.
    Vogt, N.
    Adam, C.
    Oelkers, R.J.
    [J]. Astronomy and Astrophysics, 2022, 666
  • [4] Eclipse of the V773 Tau B circumbinary disc☆☆☆
    Kenworthy, M. A.
    Picos, D. Gonzalez
    Elizondo, E.
    Martin, R. G.
    van Dam, D. M.
    Rodriguez, J. E.
    Kennedy, G. M.
    Ginski, C.
    Mugrauer, M.
    Vogt, N.
    Adam, C.
    Oelkers, R. J.
    [J]. ASTRONOMY & ASTROPHYSICS, 2022, 666
  • [5] A survey of disc thickness and viscosity in circumbinary accretion: Binary evolution, variability, and disc morphology
    Dittmann, Alexander J.
    Ryan, Geoffrey
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2022, 513 (04) : 6158 - 6176
  • [6] The evolution of large cavities and disc eccentricity in circumbinary discs
    Ragusa, Enrico
    Alexander, Richard
    Calcino, Josh
    Hirsh, Kieran
    Price, Daniel J.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 499 (03) : 3362 - 3380
  • [7] Secular evolution of disc galaxies and of their components
    Athanassoula, Evangelia
    [J]. MAPPING THE GALAXY AND NEARBY GALAXIES, 2008, : 47 - 54
  • [8] Stable counteralignment of a circumbinary disc
    Nixon, Christopher J.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 423 (03) : 2597 - 2600
  • [9] On the evolution of multiple low mass planets embedded in a circumbinary disc
    Pierens, A.
    Nelson, R. P.
    [J]. ASTRONOMY & ASTROPHYSICS, 2008, 478 (03) : 939 - 949
  • [10] The role of disc self-gravity in circumbinary planet systems - I. Disc structure and evolution
    Mutter, Matthew M.
    Pierens, Arnaud
    Nelson, Richard P.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2017, 465 (04) : 4735 - 4752