H2O maser survey of IRAS sources at high galactic latitude

Abstract

A high galactic latitude sample of 175 IRAS sources located within the core of molecular clouds has been searched for H2O maser emission with the Medicina 32 m dish operated at 22 GHz. ^Seventeen percent of the sample previously searched by other authors contained only four detections. ^The search did not produce any new water maser emitter, while the previously known maser were seen again. ^The low value of 2 percent overall detection rate can be explained in terms of Galactic distribution of massive cores. ^(Author (revised))