J/MNRAS/437/1241ivo://CDS.VizieR/J/MNRAS/437/1241doi:10.26093/cds/vizier.74371241CDSDonati P.Beccari G.Bragaglia A.Cignoni M.Tosi M.2024-08-07T20:12:17Z2014-05-05T14:07:01ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomybroad-band-photometryIn this paper we analyse the evolutionary status of three open clusters: NGC 1817, NGC 2141 and Berkeley 81. They are all of intermediate age, two are located in the Galactic anticentre direction while the third one is located in the Galactic Centre direction. All of them were observed with Large Binocular Camera at Large Binocular Telescope using the Bessel B, V and I filters. The cluster parameters have been obtained using the synthetic colour-magnitude diagram (CMD) method, i.e. the direct comparison of the observational CMDs with a library of synthetic CMDs generated with different evolutionary sets (Padova, FRANEC and FST). This analysis shows that NGC 1817 has subsolar metallicity, age between 0.8 and 1.2Gyr, reddening E(B-V) in the range 0.21 and 0.34 and distance modulus (m-M)_0_ of about 10.9; NGC 2141 is older, with age in the range 1.25 and 1.9Gyr, E(B-V) between 0.36 and 0.45, (m-M)_0_ between 11.95 and 12.21 and subsolar metallicity; Berkeley 81 has metallicity about solar, with age between 0.75 and 1.0Gyr, has reddening E(B-V)~0.90 and distance modulus (m-M)_0~12.4. Exploiting the large field of view of the instrument we derive the structure parameters for NGC 2141 and Berkeley 81 by fitting a King profile to the estimated density profile. Combining this information with the synthetic CMD technique we estimate a lower limit for the cluster total mass for these two systems.2014MNRAS.437.1241Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/437/1241CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/299/1 : BVI photometry in four open clusters (Sagar+, 1998)J/A+A/372/879 : JKBV photometry of NGC 2141 (Carraro+, 2001)J/A+A/426/827 : ubvyH{beta} photometry in NGC 1817/1807 (Balaguer-Nunez+ 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/437/1241https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/437/1241http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/437/1241https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/437/1241https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/437/1241http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/437/1241GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/437/1241/be81bvi (BVI Johnson-Cousins photometric catalogue for Berkeley 81)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/437/1241/be81bvi?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/437/1241/be81bvi?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/437/1241/be81bvi?GETtext/xml+votable180.050000true285.30506778-0.633766670.005555555555555556Cone search capability for table J/MNRAS/437/1241/n1817bvi (BVI Johnson-Cousins photometric catalogue for NGC 1817)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/437/1241/n1817bvi?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/437/1241/n1817bvi?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/437/1241/n1817bvi?GETtext/xml+votable180.050000true78.0275483316.563833890.005555555555555556Cone search capability for table J/MNRAS/437/1241/n2141bvi (BVI Johnson-Cousins photometric catalogue for NGC 2141)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/437/1241/n2141bvi?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/437/1241/n2141bvi?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/437/1241/n2141bvi?GETtext/xml+votable180.050000true90.6575447210.278551390.0055555555555555566/23659 23744-23745 24115 24121 303082.367228618189496e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/437/1241?format=asciiOpticalInfrareddefaultJ/MNRAS/437/1241/be81bviBVI Johnson-Cousins photometric catalogue for Berkeley 81IDIdentification number within the clustermeta.id;meta.mainintprimaryChip[1/4] Instrumental chip identificationmeta.id;instr.precisionintXposX chip coordinatepixpos.cartesian.x;instr.detdoubleYposY chip coordinatepixpos.cartesian.y;instr.detdoubleRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainindexedDistDistance from the cluster's centrearcminpos.angDistancedoubleBmag? Johnson B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error on magnitude B (G1)magstat.error;phot.mag;em.opt.BfloatnullableVmag? Johnson V magnitude (calibrated from B-V colour)magphot.mag;em.opt.Vfloatnullablee_Vmag? Error on magnitude V (G1)magstat.error;phot.mag;em.opt.VfloatnullableV2mag? Johnson V magnitude (calibrated from V-I colour)magphot.mag;em.opt.Vfloatnullablee_V2mag? Error on magnitude V2 (G1)magstat.error;phot.mag;em.opt.VfloatnullableImag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Error on magnitude I (G1)magstat.error;phot.mag;em.opt.IfloatnullablechAverage {chi}^2^ of the PSF fit (G1)stat.fit.chi2floatshSharpness (G1)stat.fit.paramfloatJ/MNRAS/437/1241/n1817bviBVI Johnson-Cousins photometric catalogue for NGC 1817IDIdentification number within the clustermeta.id;meta.mainintprimaryChip[1/4] Instrumental chip identificationmeta.id;instr.precisionintXposX chip coordinatepixpos.cartesian.x;instr.detdoubleYposY chip coordinatepixpos.cartesian.y;instr.detdoubleRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainDistDistance from the cluster's centrearcminpos.angDistancedoubleBmag? Johnson B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error on magnitude B (G1)magstat.error;phot.mag;em.opt.BfloatnullableVmag? Johnson V magnitude (calibrated from B-V colour)magphot.mag;em.opt.Vfloatnullablee_Vmag? Error on magnitude V (G1)magstat.error;phot.mag;em.opt.VfloatnullableV2mag? Johnson V magnitude (calibrated from V-I colour)magphot.mag;em.opt.Vfloatnullablee_V2mag? Error on magnitude V2 (G1)magstat.error;phot.mag;em.opt.VfloatnullableImag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Error on magnitude I (G1)magstat.error;phot.mag;em.opt.IfloatnullablechAverage {chi}^2^ of the PSF fit (G1)stat.fit.chi2floatshSharpness (G1)stat.fit.paramfloatJ/MNRAS/437/1241/n2141bviBVI Johnson-Cousins photometric catalogue for NGC 2141IDIdentification numbermeta.id;meta.mainintprimaryChip[1/4] Instrumental chip identificationmeta.id;instr.precisionintXposX chip coordinatepixpos.cartesian.x;instr.detdoubleYposY chip coordinatepixpos.cartesian.y;instr.detdoubleRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainDistDistance from the cluster's centrearcminpos.angDistancedoubleBmag? Johnson B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? Error on magnitude B (G1)magstat.error;phot.mag;em.opt.BfloatnullableVmag? Johnson V magnitude (calibrated from B-V colour)magphot.mag;em.opt.Vfloatnullablee_Vmag? Error on magnitude V (G1)magstat.error;phot.mag;em.opt.VfloatnullableV2mag? Johnson V magnitude (calibrated from V-I colour)magphot.mag;em.opt.Vfloatnullablee_V2mag? Error on magnitude V2 (G1)magstat.error;phot.mag;em.opt.VfloatnullableImag? Cousins I magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? Error on magnitude I (G1)magstat.error;phot.mag;em.opt.IfloatnullablechAverage {chi}^2^ of the PSF fit (G1)stat.fit.chi2floatshSharpness (G1)stat.fit.paramfloatdE(B-V)? Differential reddeningmagphot.color.excessfloatnullableVmagc? V magnitude corrected for differential reddeningmagphot.mag;em.opt.VfloatnullableB-Vc? B-V colour index corrected for differential reddeningmagphot.color;em.opt.B;em.opt.Vfloatnullable