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Very Large Array observations of the Galactic Center at 7 mm have produced animage of the 30 arcseconds surrounding Sgr A* with a resolution of 82x42milliarcseconds (mas). A comparison with IR images taken simultaneously withthe Very Large Telescope (VLT) identifies 41 radio sources with L-band (3.8microns) stellar counterparts. The well-known young, massive stars in thecentral Sgr A* cluster (e.g., IRS 16C, IRS 16NE, IRS 16SE2, IRS 16NW, IRS 16SW,AF, AFNW, IRS 34W and IRS 33E) are detected with peak flux densities between0.2 and 1.3 mJy. The origin of the stellar radio emission in the centralcluster is discussed in terms of ionized stellar winds with mass-loss rates inthe range 0.8-5x10^{-5} solar mass per year. Radio emission from eight massivestars is used as a tool for registration between the radio and infrared frameswith mas precision within a few arcseconds of Sgr A*. This is similar to theestablished technique of aligning SiO masers and evolved stars except thatradio stars lie within a few arcseconds of Sgr A*. Our data show a scatter of~6.5 mas in the positions of the eight radio sources that appear in both theL-band and 7 mm images. Lastly, we use the radio and IR data to argue thatmembers of IRS 13N are Young Stellar Objects rather than dust clumps,supporting the hypothesis that recent star formation has occurred near Sgr A*.

The Discovery of Radio Stars within 10 arcseconds of Sgr A* at 7mm