Published February 26, 2021 | Version v1
Poster Open

The 3-dimensional structure of the prototypical young triple system T Tauri




T Tauri is the best-observed member of the class of stars named after it, but astronomers are still debating what exactly is happening in the system. The irregular photometric variability of the triple system T Tauri has been puzzling since its discovery. A circumbinary disk around T Tau Sa and Sb can explain the recent brightness fluctuations of T Tau Sb, due to changes in extinction depending on the position of T Tau Sb in its orbit. 

With this contribution I present not only the recent solution for orbital parameters of this benchmark system but also the 3D configuration of circumstellar and circumbinary discs detected in the system. I give a tentative answer the long standing question is T Tau N closer or farther from us than T Tau S.  The orbital motion of T Tau Sb in the near future will allow us to probe the near side of the circumbinary disk in early 2023.



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  • Beck, T. L., Schaefer, G. H., Guilloteau, S., et al. 2020, ApJ, 902, 132
  • Duch\^ene, G., Ghez, A. M., McCabe, C., & Ceccarelli, C. 2005, ApJ, 628, 832
  • Hartmann, L., Hewett, R., Stahler, S., & Mathieu, R. D. 1986, ApJ, 309, 275
  • K\"ohler, R., and Kubiak, K. 2020, Research Notes of the AAS, 4, 73
  • Schaefer, G. H., Beck, T. L., Prato, L., & Simon, M. 2020, AJ, 160, 35