Infrared-excess Source DSO/G2 Near the Galactic Center: Theory vs.
  Observations
  Based on the monitoring of the Dusty S-cluster Object (DSO/G2) during its
closest approach to the Galactic Center supermassive black hole in 2014 and
2015 with ESO VLT/SINFONI, we further explore the model of a young, accreting
star to explain observed spectral and morphological features. The stellar
scenario is supported by our findings, i.e. ionized-hydrogen emission from the
DSO that remains spatially compact before and after the peribothron passage.
The detection of DSO/G2 object as a compact single-peak emission-line source is
not consistent with the original hypothesis of a core-less cloud that is
necessarily tidally stretched, hence producing a double-peak emission line
profile around the pericentre passage. This strengthens the evidence that the
DSO/G2 source is a dust-enshrouded young star that appears to be in an
accretion phase. The infall of material from the circumstellar disc onto the
stellar surface can contribute significantly to the emission of Br$\gamma$ line
as well as the observed large line width of the order of 10 angstrom.
