J/A+AS/119/271ivo://CDS.VizieR/J/A+AS/119/271CDSFabregat J.Torrejon J.M.Reig P.Bernabeu G.Busquets J.,Marco A.Reglero V.1998-02-25T15:42:13Z1998-02-25T16:42:02ZCDS support team

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

cds-question@unistra.frbe-starsvisible-astronomymedium-band-photometryWe present uvby{beta} photometry for Be stars in eight open clusters and two OB associations. It is shown that Be stars occupy anomalous positions in the photometric diagrams, which can be explained in terms of the circumstellar continuum radiation contribution to the photometric indices. In the (b-y)_0_-M_V_ plane Be stars appear redder than the non emission B stars, due to the additional reddening caused by the hydrogen free-bound and free-free recombination in the circumstellar envelope. In the c_0_-M_V_ plane the earlier Be stars present lower c_0_ values than absorption-line B stars, which is caused by emission in the Balmer discontinuity, while the later Be stars deviate towards higher c_0_ values, indicating absorption in the Balmer discontinuity of circumstellar origin.1996A&AS..119..271Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/119/271CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/119/271https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/119/271http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/119/271https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/119/271https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/119/271http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/119/271GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/119/271/table1Catalogue of 22 observed starsNameStar namemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVmagV magnitudemagphot.mag;em.opt.Bfloatb-yb-y color indexmagphot.color;em.opt.B;em.opt.Vfloatm1m1 color indexmagphot.colorfloatc1c1 color indexmagphot.colorfloatHbetaHbeta color indexmagphot.color;em.line.HbetafloatNNumber of measuresmeta.numberinte_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullablee_b-y? rms uncertainty on b-ymagstat.errorfloatnullablee_m1? rms uncertainty on m1magstat.errorfloatnullablee_c1? rms uncertainty on c1magstat.errorfloatnullablee_Hbeta? rms uncertainty on Hbetamagstat.errorfloatnullableDVmagStandard value minus transformed valuemagphot.mag;arith.difffloatDb-yStandard value minus transformed valuemagphot.color;arith.difffloatDm1Standard value minus transformed valuemagphot.mag;arith.difffloatDc1Standard value minus transformed valuemagphot.color;arith.difffloatDHbeta? standard value minus transformed valuemagphot.mag;arith.difffloatnullableJ/A+AS/119/271/tab5-14Photometric data for Be starsc1c1 color indexmagphot.colorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterOpen cluster or association namemeta.id.part;meta.maincharNoStar number (1)meta.id.part;meta.mainintNameHD or BD designationmeta.idcharn_NameNote on name (table13)meta.notecharVmagV magnitudemagphot.mag;em.opt.Bfloatb-yb-y color indexmagphot.color;em.opt.B;em.opt.Vfloatm1m1 color indexmagphot.colorfloatHbetaHbeta color indexmagphot.color;em.line.Hbetafloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullablee_b-y? rms uncertainty on b-ymagstat.errorfloatnullablee_m1? rms uncertainty on m1magstat.errorfloatnullablee_c1? rms uncertainty on c1magstat.errorfloatnullablee_Hbeta? rms uncertainty on Hbetamagstat.errorfloatnullableNNumber of individual measurementsmeta.numberintRef? References (only for tab5-14) (2)meta.refintnullableNote[*1-4 ,] Notes (3)meta.notecharJ/A+AS/119/271/table15Photometric data for B stars not classified as BerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterOpen cluster or association namemeta.id.part;meta.maincharNoStar number (1)meta.id.part;meta.mainintNameHD or BD designationmeta.idcharn_NameNote on name (table13)meta.notecharVmagV magnitudemagphot.mag;em.opt.Bfloatb-yb-y color indexmagphot.color;em.opt.B;em.opt.Vfloatm1m1 color indexmagphot.colorfloatc1c1 color indexmagphot.colorfloatHbetaHbeta color indexmagphot.color;em.line.Hbetafloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullablee_b-y? rms uncertainty on b-ymagstat.errorfloatnullablee_m1? rms uncertainty on m1magstat.errorfloatnullablee_c1? rms uncertainty on c1magstat.errorfloatnullablee_Hbeta? rms uncertainty on Hbetamagstat.errorfloatnullableNNumber of individual measurementsmeta.numberintRef? References (only for tab5-14) (2)meta.refintnullableNote[*1-4 ,] Notes (3)meta.notechar