OH masers in nearby galaxies
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Using the VLA, a series of high velocity resolution observations have been made of the M82 starburst. These observations follow up on previous studies of the main line OH maser emission in the central kiloparsec of this starburst region, but with greater velocity resolution than previous observations. A total of thirteen masers were detected, including all but one of the previously known sources. These new results clearly show velocity structure in spectra from several of the maser regions. Position-velocity plots show good agreement with the distribution of HI including interesting velocity structure on the blue-ward feature in the west of the starburst which traces the velocity distribution seen in the ionised gas as traced by [NeII] for example.
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Caswell, J.; Fuller, G.; Green, A.; Avison, A.; Breen, S.; Brooks, K.; Burton, M.; Chrysostomou, A.; Cox, J.; Diamond, P.; Ellingsen, S.; Gray, M.; Hoare, M.; Masheder, M.; McClure-Griffiths, N.; Pestalozzi, M.; Phillips, C.; Quinn, L.; Thompson, M.; Voronkov, M.; Walsh, Andrew; Ward-Thompson, D.; Wong-McSweeney, D.; Yates, J.; Cohen, R. (2010)We have conducted a Galactic plane survey of methanol masers at 6668 MHz using a seven-beam receiver on the Parkes telescope. Here we present results from the first part, which provides sensitive unbiased coverage of a ...
Walsh, Andrew; Breen, S.; Britton, T.; Brooks, K.; Burton, M.; Cunningham, M.; Green, J.; Harvey-Smith, L.; Hindson, L.; Hoare, M.; Indermuehle, B.; Jones, P.; Lo, N.; Longmore, S.; Lowe, V.; Phillips, C.; Purcell, C.; Thompson, M.; Urquhart, J.; Voronkov, M.; White, G.; Whiting, M. (2011)We present first results of the H2O Southern Galactic Plane Survey (HOPS), using the MopraRadio Telescope with a broad-band backend and a beam size of about 2 arcmin. We haveobserved 100 deg2 of the southern Galactic plane ...
Qiao, H.; Walsh, Andrew; Gómez, J.; Imai, H.; Green, J.; Dawson, J.; Shen, Z.; Ellingsen, S.; Breen, S.; Jones, P.; Gibson, S.; Cunningham, M. (2016)© 2016. The American Astronomical Society. All rights reserved. We report on OH maser emission toward G336.644-0.695 (IRAS 16333-4807), which is a H2O maser-emitting Planetary Nebula (PN). We have detected 1612, 1667, and ...