J/MNRAS/499/2292ivo://CDS.VizieR/J/MNRAS/499/2292doi:10.26093/cds/vizier.74992292CDSPearson S.Scholz A.Teixeira P.S.Muzic K.Eisloffel J.2025-09-29T20:16:48Z2023-11-07T09:56:45ZCDS support team

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

cds-question@unistra.frbrown-dwarfsvisible-astronomyinfrared-astronomyThe brown dwarf population in the canonical star-forming region NGC 2264 is so far poorly explored. We present a deep, multiwavelength, multiepoch survey of the star-forming cluster NGC 2264, aimed to identify young brown dwarf candidates in this region. Using criteria including optical/near-infrared (IR) colours, variability, Spitzer mid-IR colour excess, extinction, and Gaia parallax and proper motion (in order of relevance), we select 902 faint red sources with indicators of youth. Within this sample, we identify 429 brown dwarf candidates based on their IR colours. The brown dwarf candidates are estimated to span a mass range from 0.01 to 0.08M_{sun}_. We find rotation periods for 44 sources, 15 of which are brown dwarf candidates, ranging from 3.6h to 6.5d. A subset of 38 brown dwarf candidates show high-level irregular variability indicative of ongoing disc accretion, similar to the behaviour of young stars.2020MNRAS.499.2292Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/499/2292CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJ/646/1215 : Low-mass stars and brown dwarfs in NGC 2024 (Levine+, 2006)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/499/2292https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/499/2292http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/499/2292https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/499/2292https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/499/2292http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/499/2292GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/499/2292/tablea1 (Catalogue summary table)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/499/2292/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/499/2292/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/499/2292/tablea1?GETtext/xml+votable180.050000true99.961918899.560050.0055555555555555566/23636-23637 236397.952274030004205e-20 2.542825091373484e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/499/2292?format=asciiOpticalInfrareddefaultJ/MNRAS/499/2292/tablea1Catalogue summary tablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainImagI-band magnitudemagphot.mag;em.opt.IfloatJmagJ-band magnitudemagphot.mag;em.IR.JfloatHmag? H-band magnitudemagphot.mag;em.IR.HfloatnullableKmag? K-band magnitudemagphot.mag;em.IR.KfloatnullableBDCIndicates if the source is a brown dwarf candidatemeta.codecharJHKSelIndicates if the source is in the JHK_Sel sample (1)meta.codecharIKJHSelIndicates if the source is in the IKJH_Sel sample (2)meta.codecharIJSelIndicates if the source is in the IJ_Sel sample (3)meta.codecharVARIndicates if the source is in the VAR sample (4)meta.codecharHIGHVARIndicates if the source is in the HIGHVAR sample (5)meta.codecharDISCSIndicates if the source is in the DISCS sample (6)meta.codecharKINEMATICIndicates if the source is in the KINEMATIC sample (7)meta.codecharHIGHEXIndicates if the source is in the HIGHEX sample (8)meta.codechar