J/A+AS/101/153ivo://CDS.VizieR/J/A+AS/101/153CDSPalagi F.Cesaroni R.Comoretto G.Felli M.Natale V.2017-06-19T07:57:31Z1998-02-27T10:06:46ZCDS support team

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

cds-question@unistra.frastrophysical-masersradio-astronomyinfrared-sourcesThe association between galactic H2O masers and IRAS sources from the Point Source Catalog (Cat. II/125) is established for 442 sources out of a list of 505 objects, which includes all the galactic H2O masers north of 30{deg}, known up to 1988. Using a multivariate statistical analysis on the four far-IR fluxes of the associated IRAS source, galactic H2O masers are reclassified into two classes: those associated to star forming regions (SFR, 52%) and those associated to late type stars (STAR, 45%). The remaining 3% cannot be included in either class. The present classification is compared with others in the literature. Distances for a large subsample of 1120 masers are derived, using the galactic rotation curve for SFR and literature data for STAR.The parameters of the H2O maser emission (e.g. integrated flux, luminosity, variability), collected in a homogeneous way in the Arcetri H2O atlas (Comoretto et al. 1990A&AS...84..179C), and those of the associated IRAS sources (e.g. flux density, luminosity, colours) are used to investigate, in a statistical way, the properties of the STAR and SFR classes. In particular, we investigate the spatial distribution of masers both in the galactic plane and perpendicular to it. We also compare the H2O and IRAS luminosities, finding a good correlation. Moreover, we find that high luminosity sources show low colour temperatures and vice versa. The spectral profile and variability are then investigated by different means. Finally, the luminosity function for each maser class is derived.1993A&AS..101..153Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/101/153CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/101/153https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/101/153http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/101/153https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/101/153https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/101/153http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/101/153GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+AS/101/153/masers (H2O Masers and IRAS-PSC sources, and derived parameters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+AS/101/153/masers?https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/101/153/masers?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+AS/101/153/masers?GETtext/xml+votable180.050000true0.83180855.6841550.0055555555555555565/7278 6/342 774 859 862 958 1054 1078 1212 1606 1808 1889 1925 1930 1956 1961 2031 2203 2528 2990 3011 3039 3061 3068 3157 3175 3188 3198 3262 3265 3271 3282 3290 3304 3309-3311 3315 3339 3446 3630 3640 3649 3666 3727-3730 3744 3747 3765 4355 4472 4614 4892 5647 6161 6251 6803 7119 7152 7619 7631 7919 8297 8405 8475 8532 8603 8737 8926 9074 9091 9367 9423 10806 11017 11214 11712 11747 11997 12300 12363 12382 12686 12802 12833 12954 12965 12979 12987 13047 13053 13207 13216 13236 13245 13280 13454 13545 13623 13666 13683 13783 13795 13813 13845 14052 14063 14091 14241 14255 14267 14270 14280 14287 14290 14299 14301-14302 14304 14306-14307 14309 14312 14314-14315 14317 14339 14353 14358-14359 14371 14399 14403 14415 14454 14594 14618 14621-14624 14632 14674 14685 14689 14704 14811 14834 14936 15044 15363 15370 15473-15474 15593 15621 15624 15626-15627 15629 15640 15649 15667 15681 15684 15701 15759 15965 16088 16224 16594 17716 18364 19279 19293 19309 19586 20212 20699 21050 21376 21430 21436 21439 21456-21458 21504 21523 21645 21710 22041 22051 22122 22167 22208 22434 22805 22855 22866 22873 22876 23394 23471 23488 23637 23760 23764 23766-23767 23968-23969 23982 24151 24189 24325 24356 24426 24453 24500 24554 24800 25246 25407 25544 25553 25754 25798 26044 26070 26327 27519 28072 28113 28188 28825 28827-28830 28874-28875 28890 28900 28912 28917-28919 28998 29070 29090-29091 29095-29097 29100-29101 29103-29104 29116 29118 29161 29269 29430 29460-29461 29463 29504 29506 29510-29511 29517 29520 29522 29529 29532-29533 29535 29550 29597 30069 30087 30120 30123 30218-30219 30222 30244 30256 30258-30260 30262-30263 30265 30268-30269 30306 30310 30312-30313 30318-30319 30328 30333 30366 30405 30416 30421 30434 30439 30497 30543 30595 30602 30605-30606 30608 30614 30618 30622 30624-30625 30627 30636 30640-30641 30644 30661 30684 30691 30694 30699 30705 30856 31007 31086 31190 31231 31458 31464 31552 31805 31828 31832 31837 31849 31938 31944 32015 32117 32204 32259 32314 32439 32527 32723 34792 36738 39905 39909 39933 40235 40246 40422 40533 40847 42970 42981 43890 44018 44464 44511 44546 45009 47963https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+AS/101/153?format=asciiInfraredRadiodefaultJ/A+AS/101/153/masersH2O Masers and IRAS-PSC sources, and derived parametersNameName of the maser sourcemeta.id;meta.maincharIRASIRAS namemeta.id.assoccharSeq[1/505]+ Sequential number <[PCC93] NNN> in Simbadmeta.recordintprimaryindexedRAB1950Right Ascension of H2O observations (B1950)pos.eq.ra;meta.mainDEB1950Declination of H2O observations (B1950)pos.eq.dec;meta.mainClassClass to which the source is assigned (1)src.classcharGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatdRA? R.A. offset H2O - IRASarcsecpos.eq.ra;arith.difffloatnullabledDE? Dec. offset H2O - IRASarcsecpos.eq.dec;arith.difffloatnullableRem[123mbs-] IRAS associations (2)meta.notecharl_F.H2O[<*] Flag: < (upper limit) or * (single component source)meta.code.errorcharF.H2OFlux density of the strongest component in the spectrumJyphot.flux.density;em.radio.12-30GHzdoubleFi.H2O? Integrated H2O fluxJyphot.flux.density;em.radio.12-30GHzdoublenullableVpeak? Velocity of the peakkm/sphys.veloc;stat.maxfloatnullableVlow? Velocity of the lowest componentkm/sphys.veloc;stat.minfloatnullableVhigh? Velocity of the highest componentkm/sphys.veloc;stat.maxfloatnullableFWHM? FWHM of the strongest componentkm/sspect.line.widthfloatnullabledV? Offset of the strongest component from the mean velocity, normalized to the emission interval.spect.dopplerVelocfloatnullableFIR? Far-IR flux integrated over the four IRAS bandsW.m**-2phot.flux;em.IRdoublenullableDist? Distance of sourcekpcpos.distance;pos.heliocentricfloatnullableLmaser? Maser luminositysolLumphys.luminositydoublenullableL.FIR? Far-IR luminositysolLumphys.luminosity;em.IRdoublenullable_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed