LADU, ELISABETTAELISABETTALADUTARCHI, ANDREAANDREATARCHICASTANGIA, PAOLAPAOLACASTANGIASurcis, GabrieleGabrieleSurcisHenkel, ChristianChristianHenkel2020-10-132020-10-132018978-11071924541743-9213http://hdl.handle.net/20.500.12386/27769We present a search for OH maser emission in galaxies hosting H<SUB>2</SUB>O masers with the 100-m Effelsberg radio telescope and the Green Bank Telescope (GBT). This survey is aimed at investigating the apparent rarity and/or possible mutual exclusion of megamaser emission from OH and H<SUB>2</SUB>O in the same galaxy. Our study establishes new and better upper limits on the OH maser luminosity. Our work duplicates the number of H<SUB>2</SUB>O masers searched for OH emission. No new maser detections have been found. OH absorption, both in the 1667 and 1665 MHz transitions, is instead detected in two galaxies of the sample, IC342 and NGG5793.STAMPAenA survey for OH masers in H2O maser galaxies with the Effelsberg and Green Bank radio telescopesConference paper10.1017/S1743921317009759https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/survey-for-oh-masers-in-h2o-maser-galaxies-with-the-effelsberg-and-green-bank-radio-telescopes/70A4A9CF7835D4B26D8B2D5360D53E202018IAUS..336..137LFIS/05 - ASTRONOMIA E ASTROFISICAERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation