G79.3+0.3 is an infrared-dark cloud ( IRDC ) in the Cygnus-X complex that is home to massive deeply-embedded Young Stellar Objects ( YSOs ) .
We have produced a Submillimeter Array ( SMA ) 1.3 mm continuum image and ^ { 12 } CO line maps of the eastern section of G79.3+0.3 in which we detect five separate YSOs .
We have estimated physical parameters for these five YSOs and others in the vicinity of G79.3+0.3 by fitting existing photometry from Spitzer , Herschel , and ground-based telescopes to spectral energy distribution ( SED ) models .
Through these model fits we find that the most massive YSOs seen in the SMA 1.3 mm continuum emission have masses in the 5 - 6 M _ { \sun } range .
One of the SMA sources was observed to power a massive collimated ^ { 12 } CO outflow extending at least 0.94 pc in both directions from the protostar , with a total mass of 0.83 M _ { \sun } and a dynamical timescale of 23 kyr .