J/A+A/337/125ivo://CDS.VizieR/J/A+A/337/125doi:10.26093/cds/vizier.33370125CDSGaladi-Enriquez D.Jordi C.Trullols E.2000-02-07T10:43:31Z2000-02-07T11:43:25ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomyWide-band photometryCluster-field segregation and determination of physical parameters of the open clusters NGC 1750 and NGC 1758 were performed from CCD and photographic photometric and astrometric surveys previously published by the authors. Membership probabilities were computed to a brightness limit of R=15mag through a non-standard method in a fully non-parametric approach, using proper motions, positions and photometry. This study allowed several parameters for NGC 1750 and NGC 1758 to be determined, including position, size, density profile, absorption, distance, age, luminosity function and mass. The common colour excess of both clusters is E(B-V)=0.34mag. NGC 1750 is slightly younger (log(t)=8.3), closer (V-M_v_=9.0mag) and less concentrated than NGC 1758 (log(t)=8.60 and V-M_v_=9.4mag). We also conclude that NGC 1746 is an erroneous assignation (not corresponding to any real open cluster), and that NGC 1750 and NGC 1758 are overlapping clusters, but they do not constitute a gravitationally bounded system.1998A&A...337..125Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/337/125CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/333/471 : NGC 1750 & NGC 1758 UBVRI photometry (Galadi-Enriquez+ 1998)J/A+AS/131/239 : NGC 1750 + NGC 1758 BVR photometry (Galadi-Enriquez+ 1998)J/A+AS/131/89 : NGC 1750 + NGC 1758 proper motions (Tian+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/337/125https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/337/125http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/337/125https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/337/125https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/337/125http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/337/125GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/337/125/table2 (NGC 1758 members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/337/125/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/337/125/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/337/125/table2?GETtext/xml+votable180.050000true75.8814791723.695061110.005555555555555556Cone search capability for table J/A+A/337/125/table1 (NGC 1750 members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/337/125/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/337/125/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/337/125/table1?GETtext/xml+votable180.050000true75.7690916723.6270.0055555555555555566/24289 24291https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/337/125?format=asciiOpticalInfrareddefaultJ/A+A/337/125/table2NGC 1758 membersName1Other namecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intGJTGTZStar identification numberintPkKinematical membership probabilityfloatPsSpatial membership probabilityfloatPp? Photometric membership probabilityfloatnullableRAJ2000Right ascension, epoch 1994.9 (J2000.0)DEJ2000Declination, epoch 1994.9 (J2000.0)BmagB magnitudemagfloatVmag? V magnitudemagfloatnullableRmagR magnitudemagfloatSource[CP] CCD (C) or photographic (P) photometrycharName2Other namecharNoteNotes (1)charJ/A+A/337/125/table1NGC 1750 membersName1Other namecharName2Other namecharNoteNotes (1)charrecnoRecord number assigned by the VizieR team. Should Not be used for identification.intGJTGTZStar identification numberintPkKinematical membership probabilityfloatPsSpatial membership probabilityfloatPp? Photometric membership probabilityfloatnullableRAJ2000Right ascension, epoch 1994.9 (J2000.0)DEJ2000Declination, epoch 1994.9 (J2000.0)BmagB magnitudemagfloatVmag? V magnitudemagfloatnullableRmagR magnitudemagfloatSource[CP] CCD (C) or photographic (P) photometrychar