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<ri:Resource created="1997-12-09T21:52:48Z" status="active" updated="2025-06-13T15:25:00Z" version="1.2" xmlns:cs="http://www.ivoa.net/xml/ConeSearch/v1.0" xmlns:ri="http://www.ivoa.net/xml/RegistryInterface/v1.0" xmlns:vr="http://www.ivoa.net/xml/VOResource/v1.0" xmlns:vs="http://www.ivoa.net/xml/VODataService/v1.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.ivoa.net/xml/ConeSearch/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/ConeSearch.xsd http://www.ivoa.net/xml/VOResource/v1.0 http://vo.ari.uni-heidelberg.de/docs/schemata/VOResource.xsd http://www.ivoa.net/xml/VODataService/v1.1 http://vo.ari.uni-heidelberg.de/docs/schemata/VODataService.xsd" xsi:type="vs:CatalogService"><title>Catalogue of Late-type Stars with Maser Emission</title><shortName>V/18</shortName><identifier>ivo://CDS.VizieR/V/18</identifier><curation><publisher ivo-id="ivo://CDS">CDS</publisher><creator><name>Engels D.</name></creator><date role="Updated">2013-02-26T12:00:09Z</date><date role="Created">1997-12-09T21:52:48Z</date><contact><name>CDS support team</name><address>CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France</address><email>cds-question@unistra.fr</email></contact></curation><content><subject>astrophysical-masers</subject><subject>radio-astronomy</subject><subject>late-type-stars</subject><subject>interstellar-masers</subject><subject>infrared-photometry</subject><description>A catalog of more than 300 late type stars which display maser line radio emission in OH, H2O or SiO molecules has been compiled. About two thirds of the objects have been identified with optical or infrared optics, mostly M-supergiants, Mira, or semiregular variables. The catalog contains optical data such as spectral type, period and magnitude, radio flux densities and velocities and infrared flux densities in the region between 0.7 and 20 micrometers. Introduction: The systematic literature search is complete up to January 1, 1979. The catalogue ends with a reference list containing all objects followed by a code number and a list containing the literature belonging to each code number. The literature cited for each object contains all data used, except data from the general catalogue of variable stars, the two-micron sky survey and the AFCRL infrared sky survey. See the source reference for additional information. The catalogued stars are divided in six groups M-supergiant stars Type I OH/IR stars Type II OH/IR stars H2O/IR stars without detected OH-emission SiO/IR stars Objects undetected in the optical or infrared</description><source format="bibcode">1979A&amp;AS...36..337E</source><referenceURL>https://cdsarc.cds.unistra.fr/viz-bin/cat/V/18</referenceURL><type>Catalog</type><contentLevel>Research</contentLevel><relationship><relationshipType>IsServedBy</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/TAP">TAP VizieR generic service</relatedResource></relationship><relationship><relationshipType>IsServedBy</relationshipType><relatedResource>Conesearch service</relatedResource></relationship><relationship><relationshipType>related-to</relationshipType><relatedResource ivo-id="ivo://CDS.VizieR/V/68">V/68 : Catalog of observations for stellar masers (Benson+ 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Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>code</name><description>[1/98]+= Code number</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>text</name><description>Corresponding reference</description><ucd>meta.ref;pos.frame</ucd><dataType xsi:type="vs:VOTableType" arraysize="103*">char</dataType></column></table><table><name>V/18/sio</name><description>Data for SiO masers</description><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>ID</name><description>Designation of star</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType" arraysize="10*">char</dataType></column><column><name>name</name><description>Alternative designation</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="9*">char</dataType></column><column><name>f1_43</name><description>?SiO flux at 43 GHz 1st component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.mm.30-50GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v1_43</name><description>?Velocity of 1st component at 43 GHz (2)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>f2_43</name><description>?SiO flux at 43 GHz 2nd component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.mm.30-50GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v2_43</name><description>?Velocity of 2nd comp. at 43 GHz (2)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>f1_86</name><description>?SiO flux at 86 GHz 1st component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.mm.50-100GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v1_86</name><description>?Velocity of 1st comp. at 86 GHz (2)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>f2_86</name><description>?SiO flux at 86 GHz 2nd component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.mm.50-100GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v2_86</name><description>?Velocity of 2nd comp. at 86 GHz (2)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>fa_43</name><description>?SiO flux at 43 GHz additional component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.mm.30-50GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>va_43</name><description>?Velocity of additional comp. at 43 GHz (2)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>Seq</name><description>[151/206]+ Running number</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>primary</flag><flag>indexed</flag></column></table><table><name>V/18/undetec</name><description>Radio data for stars not detected in the infrared or optical regions</description><column><name>rem</name><description>?Remark (4)</description><ucd>meta.note</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>recno</name><description>Record number assigned by the VizieR team. Should Not be used for identification.</description><ucd>meta.record</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>ID</name><description>Identification of star (1)</description><ucd>meta.id;meta.main</ucd><dataType xsi:type="vs:VOTableType" arraysize="9*">char</dataType></column><column><name>RA1950</name><description>Right Ascension hours (1950)</description><ucd>pos.eq.ra;meta.main</ucd></column><column><name>DE1950</name><description>Declination degrees (1950)</description><ucd>pos.eq.dec;meta.main</ucd></column><column><name>f1_1612</name><description>?OH flux at 1612 MHz 1st component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.radio.1500-3000MHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v1_1612</name><description>?Velocity of 1st component at 1612 MHz (2)</description><unit>km/s</unit><ucd>phys.veloc;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>f2_1612</name><description>?OH flux at 1612 MHz 2nd component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.radio.1500-3000MHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v2_1612</name><description>?Velocity of 2nd comp. at 1612 MHz (2)</description><unit>km/s</unit><ucd>phys.veloc;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>f1_65/7</name><description>?OH flux at 1665/67 MHz 1st component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.radio.1500-3000MHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v1_65/7</name><description>?Velocity of 1st comp. at 1665/67 MHz (2)</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>f2_65/7</name><description>?OH flux at 1665/67 MHz 2nd component (2)</description><unit>Jy</unit><ucd>phot.flux.density;em.radio.1500-3000MHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>v2_65/7</name><description>?Velocity of 2nd comp. at 1665/67 MHz (2)</description><unit>km/s</unit><ucd>phys.veloc;pos.heliocentric</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>H2O_flux</name><description>?H2O flux at 22GHz for principal feature</description><unit>Jy</unit><ucd>phot.flux.density;em.radio.12-30GHz</ucd><dataType xsi:type="vs:VOTableType">float</dataType><flag>nullable</flag></column><column><name>H2O_vel</name><description>?H2O velocity at 22GHz for the principal feature</description><unit>km/s</unit><ucd>phys.veloc</ucd><dataType xsi:type="vs:VOTableType">int</dataType><flag>nullable</flag></column><column><name>SiO</name><description>SiO presence indicator (3)</description><ucd>meta.code</ucd><dataType xsi:type="vs:VOTableType" arraysize="1*">char</dataType></column><column><name>Seq</name><description>[207/351]+= Running number (1)</description><ucd>meta.id</ucd><dataType xsi:type="vs:VOTableType">int</dataType></column><column><name>_RA.icrs</name><description>Right ascension (ICRS) (computed by VizieR, not part of the original data)</description><ucd>pos.eq.ra</ucd><flag>nullable</flag><flag>indexed</flag></column><column><name>_DE.icrs</name><description>Declination (ICRS) (computed by VizieR, not part of the original data)</description><ucd>pos.eq.dec</ucd><flag>nullable</flag><flag>indexed</flag></column></table></schema></tableset></ri:Resource>