J/AJ/107/2101ivo://CDS.VizieR/J/AJ/107/2101doi:10.26093/cds/vizier.51072101CDSSaurer W.Seeberger R.Weinberger R.Ziener R.2023-04-06T16:50:07Z2003-07-29T14:44:57ZCDS support team

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

cds-question@unistra.frccd-photometryopen-star-clustersWhile performing galactic and extragalactic studies near the galactic plane in Cepheus. CCD frames in B, V, and R were taken of the faint (V>=16m), previously unstudied open star cluster Berkeley 93 (Be 93). Our results indicate that this object is the core of a larger aggregate, is slightly evolved, strongly reddened [E(B-V)~1.5], and shows a pronounced variable reddening that is probably due to the location of the cluster inside (near the border) a dust cloud. By far the reddest, and obviously most evolved star is a (variable) carbon star that-because of its reddening and location-appears to be a cluster member. We present arguments in favour of a large distance of more than 5kpc for Be 93 which possibly belongs to the galactic warp. As an addendum, we present six star concentrations discovered on the POSS or ESO/SERC atlas that might represent hitherto uncatalogued open star clusters of "Berkeley type."1994AJ....107.2101Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/107/2101CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/107/2101https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/107/2101http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/107/2101https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/107/2101https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/107/2101http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/107/2101GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/107/2101/table1 (Photometry of stars in Berkeley 93)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/107/2101/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/107/2101/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/107/2101/table1?GETtext/xml+votable180.050000true328.753291763.93516670.0055555555555555566/15749https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/107/2101?format=asciiOpticaldefaultJ/AJ/107/2101/table1Photometry of stars in Berkeley 93recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqStar sequential numbermeta.id;meta.mainintRmagR magnitudemagphot.mag;em.opt.RfloatVmagV magnitudemagphot.mag;em.opt.VfloatBmag? B magnitudemagphot.mag;em.opt.BfloatnullableV-RV-R colour indexmagphot.color;em.opt.V;em.opt.RfloatB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableMember[C] C: cluster star; blank: field starmeta.code.membercharRAJ2000Right Ascension J2000 (hours) (1)pos.eq.ra;meta.mainDEJ2000Declination J2000 (degrees) (1)pos.eq.dec;meta.mainrPos[bgMs] Source of the position (2)meta.refcharComComments from B. Skiff (1)meta.notechar