J/MNRAS/503/292ivo://CDS.VizieR/J/MNRAS/503/292doi:10.26093/cds/vizier.75030292CDSKhorrami Z.Langlois M.Clark P.C.Vakili F.Buckner A.S.M.,Gonzalez M.Crowther P.Wunsch R.Palous J.Lumsden S.Moraux E.2024-11-06T20:33:21Z2024-03-04T14:44:43ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryWe present the sharpest and deepest near-infrared photometric analysis of the core of R136, a newly formed massive star cluster at the centre of the 30 Doradus star-forming region in the Large Magellanic Cloud. We used the extreme adaptive optics of the SPHERE focal instrument implemented on the ESO Very Large Telescope and operated in its IRDIS imaging mode for the second time with longer exposure time in the H and K filters. Our aim was to (i) increase the number of resolved sources in the core of R136, and (ii) to compare with the first epoch to classify the properties of the detected common sources between the two epochs. Within the field of view (FOV) of 10.8"x12.1" (2.7pc*3.0pc), we detected 1499 sources in both H and K filters, for which 76 per cent of these sources have visual companions closer than 0.2". The larger number of detected sources enabled us to better sample the mass function (MF). The MF slopes are estimated at ages of 1, 1.5, and 2Myr, at different radii, and for different mass ranges. The MF slopes for the mass range of 10-300M_{sun}_ are about 0.3dex steeper than the mass range of 3-300M_{sun}_, for the whole FOV and different radii. Comparing the JHK colours of 790 sources common in between the two epochs, 67 per cent of detected sources in the outer region (r>3") are not consistent with evolutionary models at 1-2Myr and with extinctions similar to the average cluster value, suggesting an origin from ongoing star formation within 30 Doradus, unrelated to R136.2021MNRAS.503..292Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/503/292CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/448/179 : HST photometry in R136 (Hunter+ 1995)J/A+A/602/A56 : R136 JKs photometry from VLT/SPHERE EAO (Khorrami+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/503/292https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/503/292http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/503/292https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/503/292https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/503/292http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/503/292GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/503/292/tablea1 (List of brightest spectroscopically known stars in the core of R136 studied in optical)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/292/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/292/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/292/tablea1?GETtext/xml+votable180.050000true84.67665-69.10079720.005555555555555556Cone search capability for table J/MNRAS/503/292/tablea2 (List of detected sources in the centre of R136 brighter than 16mag in K)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/503/292/tablea2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/503/292/tablea2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/503/292/tablea2?GETtext/xml+votable180.050000true84.67665-69.10079720.0055555555555555566/330947.952274030004205e-20 4.2441532724171825e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/503/292?format=asciiInfrareddefaultJ/MNRAS/503/292/tablea1List of brightest spectroscopically known stars in the core of R136 studied in opticalrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHSH95Identification number in Hunter et al. (1995ApJ...448..179H, Cat. J/ApJ/448/179), [HSH95] NNNN in Simbadmeta.idintSimbadSimbad column added by the CDSmeta.ref.urlcharWB85Name in Weigelt & Baier (1985A&A...150L..18W), RMC 136aN in Simbadmeta.idcharIDKStar identification in the SPHERE/IRDIS/K-band cataloguemeta.id;meta.mainintKmag18SPHERE IRDIS K magnitude in 2018 (error +/-0.01)magphot.mag;em.IR.KfloatHmag18SPHERE IRDIS H magnitude in 2018 (error +/-0.01)magphot.mag;em.IR.HfloatJmag15SPHERE IRDIS J magnitude in 2015 (error +/-0.13)magphot.mag;em.IR.JfloatrDistance from r136a1 in our K dataarcsecpos.angDistancefloatTeffEffective temperatureKphys.temperature.effectivefloatSpTypeSpectral typesrc.spTypechare_TeffEffective temperature errorKstat.error;phys.temperature.effectivefloatr_TeffReference for Teff if not from Bestenlehner et al., 2014A&A...570A..38B (1)meta.ref;pos.framecharlogLLuminositylog(solLum)phys.luminosityfloatE_logLLuminosity error (upper value)log(solLum)stat.error;stat.maxfloate_logLLuminosity error (lower value)log(solLum)stat.errorfloatr_logLReference for logL if not from Bestenlehner et al., 2014A&A...570A..38B (1)meta.refcharlogg? Surface gravity from Bestenlehner et al., 2014A&A...570A..38Blog(cm.s**-2)phys.gravityfloatnullableMini? Stellar initial mass estimated by fitting grids of PARSEC evolutionary models (0.1-10Myr) to the Teff and logLsolMassphys.mass;meta.modelledintnullableE_Mini? Stellar initial mass error (upper value)solMassstat.error;stat.maxintnullablee_Mini? Stellar initial mass error (lower value)solMassstat.errorintnullableAge? Age estimated by fitting grids of PARSEC evolutionary models (0.1-10Myr) to the Teff and logLMyrtime.age;meta.modelledfloatnullableE_Age? Age error (upper value)Myrstat.error;stat.maxfloatnullablee_Age? Age error (lower value)Myrstat.error;time.agefloatnullabler_SpTypeReference for SpType if not from Bestenlehner et al., 2014A&A...570A..38B (1)meta.ref;pos.framechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/503/292/tablea2List of detected sources in the centre of R136 brighter than 16mag in KSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDKStar identification in the SPHERE/IRDIS/K-band cataloguemeta.id;meta.mainintKmag18K band magnitude in 2018magphot.mag;em.IR.KfloatHmag18H band magnitude in 2018magphot.mag;em.IR.HfloatKmag15K band magnitude in 2015magphot.mag;em.IR.KfloatJmag15Jband magnitude in 2015magphot.mag;em.IR.JfloatHSH95Identification number in Hunter et al. (1995ApJ...448..179H, Cat. J/ApJ/448/179), [HSH95] NNNN in Simbadmeta.idintWB85Name in Weigelt & Baier (1985A&A...150L..18W), RMC 136aN in Simbadmeta.idcharUmag? F336W (U) magnitudemagphot.mag;em.opt.UfloatnullableVmagF555W (V) magnitudemagphot.mag;em.opt.VfloatImagF814W (I) magnitudemagphot.mag;em.opt.IfloatV-KF555W-Kmag18 (V-K) colour indexmagphot.color;em.opt.V;em.IR.Kfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/503/292/tablea3List of detected sources in H and K data in 2018moredata in tables A1 and/or A2meta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDK[1/2512] Star identification in the SPHERE/IRDIS/K-band cataloguemeta.id;meta.mainintprimaryXX positionpixpos.cartesian.x;instr.detfloate_XX position errorpixstat.error;pos.cartesian.xfloatYY positionpixpos.cartesian.y;instr.detfloate_YY position errorpixstat.error;pos.cartesian.yfloatKmag18K band magnitude in 2018magphot.mag;em.IR.Kfloate_Kmag18K band magnitude in 2018 errormagstat.errorfloatKcorCorrelation between the PSF of detected source with the reference PSF in K imagestat.correlationfloatHmag18H band magnitude in 2018magphot.mag;em.IR.Hfloate_Hmag18H band magnitude in 2018 errormagstat.errorfloatHcorCorrelation between the PSF of detected source with the reference PSF in H imagestat.correlationfloat