J/A+AS/119/459ivo://CDS.VizieR/J/A+AS/119/459CDSTe Lintel Hekkert P.Chapman J.M.1997-12-09T18:18:11Z1997-12-09T19:18:08ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frastrophysical-masersradio-astronomygiant-starsWe present a survey for OH maser emission at 18cm in the direction of 196 IRAS point sources. The primary aim of the survey was to detect OH maser emission from post-asymptotic giant branch (post-AGB) stars. OH emission and/or absorption was detected in the direction of 77 sources of which 57 OH detections were previously unknown, giving an overall detection rate of 39 per cent. Fourteen maser sources associated with evolved stars or planetary nebulae were found, corresponding to 7 per cent of the total observed. These included three planetary nebulae (two new OH detections), nine post-AGB stars (three new OH detections) and two cold OH/IR stars (both previously known). Two sources were of uncertain identification (both new OH detections). The remainder of the OH sources were identified with young stellar objects and with HII regions. The survey included the detection of OH maser emission from HD 101584, an early-type supergiant at high Galactic latitude. For several of the post-AGB stars, changes have occurred in the OH spectral profiles over a period of several years. This is interpreted as evidence for rapid changes in the stellar winds, due either to interactions with stellar companions, novae-like events or rapid stellar evolution.1996A&AS..119..459Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/119/459CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+A/297/494 : OH maser from semiregular variablesJ/A+A/277/453 : OH maser survey of cool IRAS sourceshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/119/459https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/119/459http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/119/459https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/119/459https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/119/459http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/119/459GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalRadiodefaultJ/A+AS/119/459/table2Results of the OH surveyF1612? Flux at 1612MHz (1)Jyphot.flux.density;em.radio.1500-3000MHzfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS namemeta.id;meta.maincharEpochEpoch of observations (mm/yy)time.epochcharn_F1612Note if non-detection (2)meta.notecharF1665? Flux at 1665MHz (1)Jyphot.flux.density;em.radio.1500-3000MHzfloatn_F1665Note if non-detection (2)meta.notecharF1667? Flux at 1667MHz (1)Jyphot.flux.density;em.radio.1500-3000MHzfloatn_F1667Note if non-detection (2)meta.notecharF1720? Flux at 1720MHz (1)Jyphot.flux.density;em.radio.1500-3000MHzfloatn_F1720Note if non-detection (2)meta.notecharClassClassification (3)src.classcharn_ClassNote on classification (4)meta.notecharRefLiterature reference (5)meta.refchar