EP111
EP111A
The OH megamaser activity in (U)LIRG galaxies results from amplification of background radio continuum by a foreground excited OH gas extended across part or all of the face of the nuclear region. Nonuniform continuum backgrounds and cloud-based amplification may explain both the observed more compact high-brightness components and the diffuse extended components in prominent OH MM. Although there is a quite good understanding of the physics of the OH MM phenomenon, certain questions remain how this physical picture translates into a spatial distribution of the amplifying components and their optical depths. This project proposes a study with high angular resolution of the spatial connection between the radio continuum background and the OH emission characteristics (and the low-resolution FIR properties) in different (U)LIRG environments. In these proposal we request EVN and MERLIN imaging of the radio continuum and the spectral line of a further three OH MM.
Observation pages at the EVN archive:
This data is part of the archive of VLBI data maintained by JIVE on behalf of the EVN, a network of radio telescopes located primarily in Europe and Asia, with additional antennas in South Africa. The EVN archive itself has the DOI https://doi.org/10.17616/R3Z197