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
Start Page: Physics of Stars and Interstellar Medium
Language: Russian

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

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