CO ( 3 − 2 ) Emission in Spiral Galaxies : Warm Molecular Gas in Action ?

Using the APEX sub-millimeter telescope we have investigated the CO(3−2) emission in five face-on nearby barred spiral galaxies, where three of them are high surface brightness galaxies (HSBs) lying at the Freeman limit, and two are low surface brightness galaxies (LSBs). We have positive detections for two of three HSB spirals and non-detections for the… (More)