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VLA observations of 6-cm excited OH
Patrick Palmer, W. M. Goss, J. B. Whiteoak
The VLA was used to determine precise positions for 4765-MHz OH maser emission sources toward star-forming regions which had been observed about seven months earlier with the Effel…
Phase-Referenced VLBA Observations of OH Masers at 4765 MHz
Patrick Palmer, W. M. Goss, K. E. Devine
We report VLBA observations of maser emission from the rotationally excited doublet Pi 1/2, J=1/2 state of OH at 4765 MHz. We made phase-referenced observations of W3(OH) at both 4…
The Formaldehyde Masers in NGC 7538 and G29.96-0.02: VLBA, MERLIN, and VLA Observations
Ian M. Hoffman, W. M. Goss, Patrick Palmer +1
The 6 cm formaldehyde (H2CO) maser sources in the compact HII regions NGC 7538-IRS1 and G29.96-0.02 have been imaged at high resolution (beams < 50 mas). Using the VLBA and MERLIN,…