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A peculiar source in the Galactic center known as the Dusty S-cluster Object(DSO/G2) moves on a highly eccentric orbit around the supermassive black holewith the pericenter passage in the spring of 2014. Its nature has beenuncertain mainly because of the lack of any information about its intrinsicgeometry. For the first time, we use near-infrared polarimetric imaging data toobtain constraints about the geometrical properties of the DSO. We find outthat DSO is an intrinsically polarized source, based on the significanceanalysis of polarization parameters, with the degree of the polarization of$\sim 30\%$ and an alternating polarization angle as it approaches the positionof Sgr A*. Since the DSO exhibits a near-infrared excess of $K_{\rm s}-L'>3$and remains rather compact in emission-line maps, its main characteristics maybe explained with the model of a pre-main-sequence star embedded in anon-spherical dusty envelope.

Detection of polarized continuum emission of the Dusty S-cluster Object (DSO/G2)