J/A+A/441/631ivo://CDS.VizieR/J/A+A/441/631doi:10.26093/cds/vizier.34410631CDSPaunzen E.Stuetz C.Maitzen H.M.2017-11-10T11:16:29Z2006-10-01T15:41:23ZCDS support team

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

cds-question@unistra.frpeculiar-variable-starsvisible-astronomymedium-band-photometryWe have summarized all {Delta}a measurements for galactic field stars (1474 objects) from the literature published over more than two decades. These measurements were, for the first time, compiled and homogeneously analyzed. The {Delta}a intermediate band photometric system samples the depth of the 5200{AA} flux depression by comparing the flux at the center with the adjacent regions with bandwidths of 110{AA} to 230{AA}. Because it was slightly modified over the last three decades, we checked for systematic trends for the different measurements but found no correlations whatsoever. The {Delta}a photometric system is most suitable to detecting magnetic chemically peculiar (CP) stars with high efficiency, but is also capable of detecting a small percentage of non-magnetic CP objects. Furthermore, the groups of (metal-weak) lambda Bootis, as well as classical Be/shell stars, can be successfully investigated. In addition, we also analyzed the behaviour of supergiants (luminosity class I and II). On the basis of apparent normal type objects, the correlation of the 3sigma significance limit and the percentage of positive detection for all groups was derived.2005A&A...441..631Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/441/631CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-tohttp://obswww.unige.ch/gcpd/ph75.html : Maitzen photometric systemIII/162 : General Catalogue of Ap and Am stars (Renson+ 1991)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/441/631https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/441/631http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/441/631https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/441/631https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/441/631http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/441/631GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/441/631/table4 (Confirmed chemically peculiar stars from Renson (1991, Cat. <III/162>), the type of peculiarity was taken from the literature)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/441/631/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/441/631/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/441/631/table4?GETtext/xml+votable180.050000true1.9338047-2.54867940.0055555555555555566/389 5501 11094 11786 12918 13199 13235 13865 13946 14513 14718 15386 15424 15617 15631 15633 16754 16876 17397 17571 18315 20671 20705 20774 20807-20808 20824 20830 20839 20846 20944 20987 21253 21269 21289 21298 21332 21376 21389 21422 21446 21456 21488 21521 21637 21686 21691 21696 21721 21807 22020 22056 22083 22087 22094 22096 22130 22179 22183 22192-22193 22224 22251 22260 22400 22448 22578 22622 22790 22863 22867 22957 23010 23030 23200 23556 23589-23590 23634 23744 23782 24005 24171 24674 24744 24934 25122 26855 27210 27541 28737 28806 28924 29097 29101 29121 29190 29195 29219 29555 29613 30306 30870 31043 31258 32935 32974 33089 33231 33305 33408 33862 34042 34095 34130 34664 36290 36473 36937 36966 37081 37133 37151 37265 37289 37367 37442-37443 37464 37467 37665 37681 37698 37721 37753-37754 37759 37769 37773 37818 37825 37827 37874 37880 37891 37893 37913 37932 37936 38015-38016 38035 38043 38051 38054 38064 38078 38081 38123 38142-38143 38161 38297 38379 38441 38494 38503 38540 38861 38990 39154 39162 39183 39196 39198 39219 39269 39281 39285 39300 39306 39324 39344 39352 39365 39372 39395 39462 39485 39531-39532 39591 39613 39639 39649-39650 39658 39681 39713 39772 39789 39801-39802 39836 39930 39945 39963 40079 40184 40189 40372 40379 40593 40599 40608 40652 40676 40686 40871 40890 41088 41144 41154 41168 41181 41202 41210 41404 41524 41533 41539 41552 41568 41643 41680 41710 41714 41731 41735 41786 41829 41868 41901 41994 42019 42023 42098 42189 42224 42230 42258 42274 42287 42295 42332 42349 42353 42357 42416 42426 42463 42490 42619 42635 42673 42752 42757 42826 42879 42914 42943 42975 43016 43025 43032 43040 43075 43099 43445 43798 45097 45285 45455 45539 45789 46768 46871 47079 47153 47230 47345 47411 47504 47684 47688 48152 48562 48582https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/441/631?format=asciiOpticaldefaultJ/A+A/441/631/table4Confirmed chemically peculiar stars from Renson (1991, Cat. <III/162>), the type of peculiarity was taken from the literaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRenRenson (<III/162>) number of the starmeta.id;meta.mainintHD? HD (<III/135>) number of the starmeta.idintnullable(b-y)0Dereddened b-y colour indexmagphot.color;em.opt.B;em.opt.VfloatDa{Delta}a index in Maitzen photometric systemmagphot.colorfloatSpecSpectral type of CP starsrc.spTypecharSimbadNameSimbad column added by the CDSmeta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main