VLBA and EVN radio observations of H _ { 2 } O masers at 22Â GHz and methanol masers at 6.7Â GHz have been used to obtain images of the maser spots in the infrared object GLÂ 2789 , which is associated with the young stellar object V645Â Cyg .
The position of these masers coincides with that of the optical object to within 0 { { } ^ { \prime \prime } } .2 .
The maser spots are located in a line oriented north–south , and their positions and radial velocities can be described by a model with a Keplerian disk with maximum radius 40Â AU for the H _ { 2 } O masers and 800Â AU for the methanol masers .
The H _ { 2 } O and methanol masers spots are unresolved , and the lower limits for their brightness temperatures are 2 \times 10 ^ { 13 } Â K and 1.4 \times 10 ^ { 9 } Â K , respectively .
A model in which the maser radiation is formed in extended water–methanol clouds associated with ice planets forming around the young star is proposed .