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Single point observations are presented in NH3 (1,1) and (2,2) inversiontransitions using the Effelsberg 100 m telescope for a sample of 100 6.7 GHzmethanol masers and mapping observations in the 12CO and 13CO (1-0) transitionsusing the PMO Delingha 13.7 m telescope for 82 sample sources with detectedammonia. A further 62 sources were selected for either 12CO or 13CO lineoutflow identification, producing 45 outflow candidates, 29 using 12CO and 16using 13CO data. Twenty-two of the outflow candidates were newly identified,and 23 had trigonometric parallax distances. Physical properties were derivedfrom ammonia lines and CO outflow parameters calculated. Histograms andstatistical correlations for ammonia, CO outflow parameters, and 6.7 GHzmethanol maser luminosities are also presented. No significant correlation wasfound between ammonia and maser luminosity. However, weak correlations werefound between outflow properties and maser luminosities, which may indicatethat outflows are physically associated with 6.7 GHz masers.

Ammonia and CO Outflow around 6.7 GHz Methanol Masers