Merged catalogue of reflection nebulae Several catalogues of reflection nebulae are merged to create a uniformcatalogue of 913 objects. It contains revised coordinates,cross-identifications of nebulae and stars, as well as identificationswith IRAS point sources.The catalogue is only available in electronic form at the CDS viaanonymous ftp to cdsarc.u-strasbg.fr (126.96.36.199) or viahttp://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/399/141
CO, CS, and HCN in a clustering of reflection nebulae in Monoceros Observations are reported of the 2.6-mm line of CO from an extendedregion in Monoceros containing a complex of dust clouds as well as agroup of reflection nebulae (Mon R2) and where a source of relativelystrong millimeter emission from CS and HCN has been found. Lower limitsare obtained for the CO and H2 column densities in this region, and fiveCO emission peaks are identified, each of which is approximatelycoincident with at least one reflection nebula. Around the position ofthe strongest peak, extended emission is observed from CS and HCN,suggesting the existence of a rotating core with an H2 density whichcorresponds to a mass of 5500 solar masses. The CO profiles in thedirection of the strongest peak appear to show self-absorption, whichmay indicate a collapsing cloud.