On signatures of companion formation in stars Sz54 and Sz59 – young systems with protoplanetary disks
| 1Zakhozhay, OV 1Main Astronomical Observatory of the National Academy of Sciences of Ukraine, Kyiv, Ukraine |
| Kinemat. fiz. nebesnyh tel (Online) 2017, 33(4):51-56 |
| https://doi.org/10.15407/kfnt2017.04.051 |
| Start Page: Physics of Stars and Interstellar Medium |
| Language: Russian |
Abstract: We study spectral energy distributions of two young systems Sz54 and Sz59, that belong to Chameleon II star forming region. The results of the modeling indicate that protoplanetary disks of these systems contain gaps in the dust component. These gaps could be a result of a planetary or brown dwarf companion formation, because the companion would accumulate a disk material, moving along its orbit. In a present work we have determined physical characteristics of the disks. We also discuss possible companion characteristics, based on the geometrical parameters of the gaps. |
| Keywords: dwarf companion, protoplanetary disk, young stars |
References:
1.C. L. Brogan, L. M. Perez, T. R. Hunter, W. R. F. Dent, et al. (ALMA Partnership), “The 2014 ALMA long baseline campaign: First results from high angular resolution observations toward the HL Tau region,” Astrophys. J. Lett. 808, L3 (2015).
https://doi.org/10.1088/2041-8205/808/1/L3
2.S. M. Andrews, D. J. Wilner, Zh. Zhu, T. Birnstiel, J. M. Carpenter, et al., “Ringed substructure and a gap at 1 au in the nearest protoplanetary disk,” Astrophys. J. Lett. 820, L40 (2016).
https://doi.org/10.3847/2041-8205/820/2/L40
3.S. E. Dodson-Robinson and C. Salyk, “Transitional disks as signposts of young, multiplanet systems,” Astrophys. J. 738, 131 (2011).
https://doi.org/10.1088/0004-637X/738/2/131
4.L. Fouchet, J.-F. Gonzalez, S. T. Maddison, “Planet gaps in the dust layer of 3D protoplanetary disks. I. Hydrodynamical simulations of T Tauri disks,” Astron. Astrophys. 518, A16 (2010).
https://doi.org/10.1051/0004-6361/200913778
5.J.-F. Gonzalez, C. Pinte, S. T. Maddison, F. Mnard, and L. Fouchet, “Planet gaps in the dust layer of 3D protoplanetary disks. II. Observability with ALMA,” Astron. Astrophys. 547, A58 (2012).
https://doi.org/10.1051/0004-6361/201218806
6.M. Kuerster, T. Trifonov, S. Reffert, N. M. Kostogryz, and F. Rodler, “Disentangling 2:1 resonant radial velocity orbits from eccentric ones and a case study for HD 27894,” Astron. Astrophys. 577, A103 (2015).
https://doi.org/10.1051/0004-6361/201525872
7.B. Ma and J. Ge, “Statistical properties of brown dwarf companions: Implications for different formation mechanisms,” Mon. Not. R. Astron. Soc. 439, 2781–2789 (2014).
https://doi.org/10.1093/mnras/stu134
8.F. Meru, S. P. Quanz, M. Reggiani, C. Baruteau, and J. E. Pineda, “Long-lasting dust rings in gas-rich disks: Sculpting by single and multiple planets” (2014).
https://arxiv.org/abs/1411.5366.
9.P. Pinilla, M. Benisty, and T. Birnstiel, “Ring shaped dust accumulation in transition disks,” Astron. Astrophys. 545, A81 (2012).
https://doi.org/10.1051/0004-6361/201219315
10.L. Spezzi, N. L. J. Cox, T. Prusti, et al., “The Herschel Gould Belt Survey in Chamaeleon II. Properties of cold dust in disks around young stellar objects,” Astron. Astrophys. 555, A71 (2013).
https://doi.org/10.1051/0004-6361/201321444
11.P. Varniere, J. E. Bjorkman, A. Frank, et al., “Observational properties of protoplanetary disk gaps,” Astrophys. J. 637, L125–L128 (2006).
https://doi.org/10.1086/500584
12.O. V. Zakhozhay, “The influence of forming companions on the spectral energy distributions of stars with circumstellar discs,” Publ. Astron. Soc. Aust. 34, e015 (2017).
https://doi.org/10.1017/pasa.2017.9
13.O. V. Zakhozhay, C. del Burgo, and V. A. Zakhozhay, “Geometry of highly inclined protoplanetary disks,” Adv. Astron. Space Phys. 5, 33–38 (2015).
https://doi.org/10.17721/2227-1481.5.33-38
14.V. A. Zakhozhay, O. V. Zakhozhay, and A. P. Vidmachenko, “Peculiarities of simulation of thin flat discs with central objects in accordance with their spatial location,” Kinematics Phys. Celestial Bodies. 27, 140–153 (2011).
https://doi.org/10.3103/S0884591311030068
15.O. Zakhozhay, M. R. Zapatero Osorio, V. Bejar, and Y. Boehler, “Spectral energy distribution simulations of a possible ring structure around the young, red brown dwarf G 196-3 B,” Mon. Not. R. Astron. Soc. 464, 1108–1118 (2017).
https://doi.org/10.1093/mnras/stw2308