We have used the Very Large Array to search for compact milliarcsecond-size radio sources near methanol masers in high-mass star-forming regions. Such sources are required for Very Long Baseline Interferometry phase-referencing observations. We conducted p

Table4.ParametersofPossibleCalibrators

SourceName

SourcePositionα(2000)δ(2000)

1.4GHz

(mJy)

5GHz(mJy)

15GHz(mJy)

SpectralIndex

θ(′′)