J/A+A/325/255ivo://CDS.VizieR/J/A+A/325/255doi:10.26093/cds/vizier.33250255CDSBaudry A.Desmurs J.-F.Wilson T.L.Cohen R.J.2019-02-27T14:15:50Z1997-12-09T18:02:42ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomypolarimetryWe have undertaken a comprehensive search for 5 cm OH masers in regions visible from Effelsberg with the 100-m telescope (i.e., those with declinations above -29^o^). Our sample is based on bright sources taken from the IRAS Point Source Catalog and/or from previous 18cm OH and H_ 2_O surveys. Among the 165 sources observed, 16 are new (15 exhibit emission and one source shows both absorption and emission). Two new absorption line sources have been tentatively detected. The general properties of the 5cm OH sources are presented and discussed. The 6035MHz line is more often detected than the 6031MHz line. Nevertheless, the latter line is frequently present, a fact that is not explained by present OH excitation models. Simple calculations tend to show that there are enough FIR photons to pump the 6035 and 6031MHz masers, and we found that the statistics of the ratio S_ radio_/S_ IR_ at 18, 5 and 6cm suggest that the maser pumping efficiency decreases with increasing OH excitation. Variability on short (months) or long (years) time-scales is a common feature in many 5 cm OH sources. We also present observations of the 6 GHz satellite lines and report, besides W3(OH), on two certain and perhaps two newly detected weak sources. Some implications on the excitation of OH are briefly discussed.1997A&A...325..255Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/325/255CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/325/255https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/325/255http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/325/255https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/325/255https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/325/255http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/325/255GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/325/255/table1 (Observations of the 6031 and 6035 MHz transitions of OH)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/325/255/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/325/255/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/325/255/table1?GETtext/xml+votable180.050000true13.098944556.56259530.005555555555555556Cone search capability for table J/A+A/325/255/table3 (Integrated flux densities of maser sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/325/255/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/325/255/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/325/255/table3?GETtext/xml+votable180.050000true36.748261.87220.0055555555555555566/859 1231 3011 3271 3290 3606 3649 7606 14063 14287 14304 14306-14307 14309 14311 14314 14317 14353 14358-14359 14406 14453 14594 14621-14622 14624 14644 14647 14655 14666-14667 14670-14671 14689 14691 14693 14696 14704 15428 15452 15458 15667 15681 15683 21439 21456 21458 21510 22805 22854-22855 22873 23764 23969 23982 24325 24554 29094 29100-29101 29103 29114 29116 29118 29463 29504-29505 29508 29510-29511 29523 29532-29533 29535 30218-30219 30245 30256 30258-30259 30262-30263 30268-30269 30312 30318-30319 30328 30341 30366 30405 30605 30617-30619 30622 30624 30644 30691 30694-306953.986906191891867e-24 4.008109341531198e-24https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/325/255?format=asciiRadiodefaultJ/A+A/325/255/table1Observations of the 6031 and 6035 MHz transitions of OHNamesOther namesmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS sourcemeta.id;meta.maincharRA1950Observed right ascension (1950)pos.eq.ra;meta.mainDE1950Observed declination (1950)pos.eq.dec;meta.mainVlsrminLSR Velocity range (lower value)km/sphys.veloc;instr.bandwidth;pos.lsrintVlsrmaxLSR Velocity range (upper value)km/sphys.veloc;instr.bandwidth;pos.lsrintl_Sen6031MHz(RCP)Limit flag on Sen6031MHz(RCP) (1)meta.code.errorcharSen6031MHz(RCP)? Sensitivity at 6031MHz, RCPJyphot.flux.density;em.radio.6-12GHzfloatnullablen_Sen6031MHz(RCP)Note on Sen6031MHz(RCP) (2)meta.notecharl_Sen6031MHz(LCP)Limit flag on Sen6031MHz(LCP) (1)meta.code.errorcharSen6031MHz(LCP)? Sensitivity at 6031MHz, LCPJyphot.flux.density;em.radio.6-12GHzfloatnullablen_Sen6031MHz(LCP)Note on Sen6031MHz(LCP) (2)meta.notecharl_Sen6035MHz(RCP)Limit flag on Sen6035MHz(RCP) (1)meta.code.errorcharSen6035MHz(RCP)? Sensitivity at 6035MHz, RCPJyphot.flux.density;em.radio.6-12GHzfloatnullablen_Sen6035MHz(RCP)Note on Sen6035MHz(RCP) (2)meta.notecharl_Sen6035MHz(LCP)Limit flag on Sen6035MHz(LCP) (1)meta.code.errorcharSen6035MHz(LCP)? Sensitivity at 6035MHz, LCPJyphot.flux.density;em.radio.6-12GHzfloatnullablen_Sen6035MHz(LCP)Note on Sen6035MHz(LCP) (2)meta.notechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.decnullableindexedJ/A+A/325/255/table3Integrated flux densities of maser sourcesPer[JM] Period (4)time.periodcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource namemeta.id;meta.maincharNamesOther namemeta.idcharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latIS6031MHzr? Integrated flux density at 6031MHz, right sideJy.km/sphot.flux.density;em.radio.6-12GHzfloatnullableu_IS6031MHzr[?] Uncertainty flag on IS6031MHzrmeta.code.errorcharIS6031MHzl? Integrated flux density at 6031MHz, left sideJy.km/sphot.flux.density;em.radio.6-12GHzfloatnullableu_IS6031MHzl[?] Uncertainty flag on IS6031MHzlmeta.code.errorcharIS6035MHzr? Integrated flux density at 6035MHz, right sideJy.km/sphot.flux.density;em.radio.6-12GHzfloatnullableIS6035MHzl? Integrated flux density at 6035MHz, left sideJy.km/sphot.flux.density;em.radio.6-12GHzfloatnullablen_IS6035MHzl[*] Note (1)meta.notecharDist? Distancekpcpos.distancefloatnullableDist2? Second value of distance when uncertainty (2)kpcpos.distancefloatnullablen_Dist2[)] Note on Dist2 (3)meta.notecharL6031MHz? Luminosity at 6031MHzJy.kpc**2.km.s**-1phys.luminosityfloatnullableL6031MHz2? Second value of luminosity at 6031MHz when uncertainty (2)Jy.kpc**2.km.s**-1phys.luminosityfloatnullableL6035MHz? Luminosity at 6035MHzJy.kpc**2.km.s**-1phys.luminosityfloatnullableL6035MHz2? Second value of luminosity at 6035MHz when uncertainty (2)Jy.kpc**2.km.s**-1phys.luminosityfloatnullablen_L6035MHz2[)] Note on L6035MHz2 (3)meta.notechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decnullableindexedJ/A+A/325/255/table4Observations of the 6017 and 6049 MHz transitions of OHrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIRASIRAS source namemeta.id;meta.maincharNamesOther namesmeta.idcharVlsrmin? LSR velocity range (lower value)km/sphys.veloc;instr.bandwidth;pos.lsrintnullableVlsrmax? LSR velocity range (upper value)km/sphys.veloc;instr.bandwidth;pos.lsrintnullablel_S6017MHzLimit flag on S6017MHzmeta.code.errorcharS6017MHz? 3 {sigma} limit at 6017MHzJyphot.flux.density;em.radio.3-6GHzfloatnullablen_S6017MHzNote on S6017MHz (1)meta.notecharl_S6049MHzLimit flag on S6049MHzmeta.code.errorcharS6049MHz? 3 {sigma} limit at 6049MHzJyphot.flux.density;em.radio.3-6GHzfloatnullablen_S6049MHzNote on S6049MHz (1)meta.notecharJ/A+A/325/255/table6The sense and percentage of circular polarization of maser featuresrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource namemeta.idcharNote? Note (1)meta.noteintnullableNameOther namemeta.id;meta.maincharLineLineMHzmeta.id;spect.lineintSide[RL] Side of the linemeta.notecharVlsrLSR velocity (2)km/sphys.veloc;pos.lsrfloatSensPolSense of Polarizationphys.polarizationcharPolPolarization%phys.polarizationinte_Polrms uncertainty on Pol%stat.errorintn_PolNote on Pol (3)meta.notecharJ/A+A/325/255/table7Identification of possible Zeeman patternsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceSource namemeta.id;meta.maincharLineLineMHzmeta.id;spect.lineintNline1First associated line number (1995 July data) (1)phys.atmol.number;spect.lineintNline2Second associated line number (1995 July data) (1)phys.atmol.number;spect.lineintn_Nline[*] Note on the pair (2)meta.notecharVel95Center velocity for 1995 July observationskm/sphys.velocfloatField95Field for 1995 July observationsmGmeta.id;obs.fieldfloatVel94? Center velocity for 1994 May observationskm/sphys.velocfloatnullableField94? Field for 1994 May observationsmGmeta.id;obs.fieldfloatnullableJ/A+A/325/255/table2Line parameters of maser emission sources observed in 1995 JulyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceIRAS source namemeta.id;meta.maincharNameOther namemeta.idcharn_Line6031MHz[RL] R: Right, L: leftmeta.notecharLine6031MHz? Line identification number at 6031MHzmeta.idintnullablenLine6031MHz[*] Note (1)meta.notecharV6031MHz? Velocity at 6031MHzkm/sphys.velocfloatnullableu_V6031MHz[?] Uncertainty flag on V6031MHzmeta.code.errorcharSp6031MHz? Peak flux density at 6031MHzJyphot.flux.density;em.radio.3-6GHzfloatnullableu_Sp6031MHz[?] Uncertainty flag on Sp6031MHzmeta.code.errorcharLW6031MHz? Linewidth at 6031MHzkm/sspect.line.width;em.radio.6-12GHzfloatnullableu_LW6031MHz[?] Uncertainty flag on LW6031MHzmeta.code.errorcharn_Line6035MHz[RL] R: Right, L: leftmeta.notecharLine6035MHz? Line identification number at 6035MHzmeta.idintnullablenLine6035MHz[*] Note (1)meta.notecharV6035MHz? Velocity at 6035MHzkm/sphys.velocfloatnullableSp6035MHz? Peak flux density at 6035MHzJyphot.flux.density;em.radio.3-6GHzfloatnullableu_Sp6035MHz[?] Uncertainty flag on Sp6035MHzmeta.code.errorcharLW6035MHz? Linewidth at 6035MHzkm/sspect.line.width;em.radio.6-12GHzfloatnullableu_LW6035MHz[?] Uncertainty flag on LW6035MHzmeta.code.errorchar