High-velocity-resolution observations of OH main line lasers in the M82 starburst
arXiv:1001.4849 · doi:10.1111/j.1365-2966.2009.16100.x
Abstract
Using the VLA, a series of high velocity resolution observations have been made of the M82 starburst at 1.6 GHz. These observations follow up on previous studies of the main line OH maser emission in the central kiloparsec of this starburst region, but with far greater velocity resolution, showing significant velocity structure in some of the maser spots for the first time. A total of thirteen masers were detected, including all but one of the previously known sources. While some of these masers are still unresolved in velocity, 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 H{\sc i} including interesting velocity structure on the blueward feature in the west of the starburst which traces the velocity distribution seen in the ionised gas.
arXiv commentMNRAS in press. 15 pages, 9 figures
References in corpus (11)
- The Asymmetric Wind in M82
- A Parsec-Scale Study of the 5/15 GHz Spectral Indices of the Compact Radio Sources in M82
- The optical structure of the starburst galaxy M82 - I: Dynamics of the disk and inner-wind
- Deep MERLIN 5GHz Radio Imaging of Supernova Remnants in the M82 Starburst
- A gravitationally lensed water maser in the early Universe
- Spatially Resolved Spitzer-IRS Spectroscopy of the Central Region of M82
- VLA H92 Alpha and H53 Alpha Radio Recombination Line Observations of M82
- Starburst at the Expanding Molecular Superbubble in M82: Self-Induced Starburst at the Inner Edge of the Superbubble
- OH Satellite Line Masers and an AGN Candidate in M82
- A High Resolution Map of 12CO J=6-5 Emission in the Starburst Galaxy M82
- OH main line masers in the M82 starburst