GeminiFocus 2015 Year in Review | Page 28

Figure 9. The NIFS image in the K band of one of nine regions analyzed. The field measures 3 arcseconds across and is located about 0.4 pc from the Galactic center. Symbols indicate spectral types: violet triangles (early); green circles (late); black x’s (ambiguous); and a foreground star (red square). for their formation in the vicinity of a supermassive black hole or the short time available for them to relocate there after formation elsewhere. New observations, obtained using the Near-infrared Integral Field Spectrometer (NIFS) with laser and natural guide star adaptive optics, rule out at least one formation scenario (infall of a young stellar cluster) and help set the physical scale (0.5 parsecs (pc) or 1.6 light years) for the extent of in situ formation. Morten Støsta