J/MNRAS/392/1456ivo://CDS.VizieR/J/MNRAS/392/1456doi:10.26093/cds/vizier.73921456CDSIrwin J.Aigrain S.Bouvier J.Hebb L.Hodgkin S.Irwin M.Moraux E.2024-07-08T20:15:03Z2009-10-17T16:49:53ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsccd-photometryWe report on the results of a time-series photometric survey of M50 (NGC 2323), a ~130Myr open cluster, carried out using the Cerro Tololo Inter-American Observatory (CTIO) 4-m Blanco telescope and Mosaic-II detector as part of the Monitor project. Rotation periods were derived for 812 candidate cluster members over the mass range 0.2<=M/M_{sun}_<=1.1. The rotation period distributions show a clear mass-dependent morphology, statistically indistinguishable from those in NGC 2516 and M35 taken from the literature. Due to the availability of data from three observing runs separated by ~10 and 1 month time-scales, we are able to demonstrate clear evidence for evolution of the photometric amplitudes, and hence spot patterns, over the 10 month gap. We are not able to constrain the time-scales for these effects in detail due to limitations imposed by the large gaps in our sampling, which also prevent the use of the phase information.2009MNRAS.392.1456Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/392/1456CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/128/131 : UBV photometry of NGC 2323 (Claria+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/392/1456https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/392/1456http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/392/1456https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/392/1456https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/392/1456http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/392/1456GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/392/1456/table1 (Properties of our 812 rotation candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/392/1456/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/392/1456/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/392/1456/table1?GETtext/xml+votable180.050000true105.3980417-8.55294440.0055555555555555566/21671 21677 21682 21688https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/392/1456?format=asciiOpticaldefaultJ/MNRAS/392/1456/table1Properties of our 812 rotation candidatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[IAB2009]Identifier (M50-N-NNNN) (1)meta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainVmagJohnson V magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatIcmagCousins I magnitudemagphot.mag;em.opt.Ifloate_Icmagrms uncertainty on Imagmagstat.error;phot.mag;em.opt.IfloatPerPerioddtime.periodfloata1magi-band instrumental {alpha}1 amplitudemagphot.magfloate_a1magrms uncertainty on a1magmagstat.error;phot.magfloata2magi-band instrumental {alpha}2 amplitudemagphot.magfloate_a2magrms uncertainty on a2magmagstat.error;phot.magfloata3magi-band instrumental {alpha}3 amplitudemagphot.magfloate_a3magrms uncertainty on a3magmagstat.error;phot.magfloatMassInterpolated Mass (2)solMassphys.massfloatRadInterpolated Radius (2)solRadphys.size.radiusfloat