J/AJ/162/140ivo://CDS.VizieR/J/AJ/162/140doi:10.26093/cds/vizier.51620140CDSKim S.Lim B.Bessell M.S.Kim J.S.Sung H.2024-02-12T06:17:52Z2021-12-27T07:34:41ZCDS support team

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

cds-question@unistra.fropen-star-clustersh-ii-regionsstar-forming-regionspre-main-sequence-starsinfrared-photometryvisible-astronomybroad-band-photometrytwo-color-diagramsYoung open clusters are ideal laboratories to understand the star formation process. We present deep UBVI and H{alpha} photometry for the young open cluster IC1590 in the center of the HII region NGC281. Early-type members are selected from UBV photometric diagrams, and low-mass pre-main-sequence (PMS) members are identified by using H{alpha} photometry. In addition, the published X-ray source list and Gaia astrometric data are also used to isolate probable members. A total of 408 stars are selected as members. The mean reddening obtained from early-type members is <E(B-V)>=0.40{+/-}0.06(s.d.). We confirm the abnormal extinction law for the intracluster medium. The distance modulus to the cluster determined from the zero-age main-sequence fitting method is 12.3{+/-}0.2mag (d=2.88{+/-}0.28kpc), which is consistent with the distance d=2.70_-0.20_^+0.24^kpc from the recent Gaia parallaxes. We also estimate the ages and masses of individual members by means of stellar evolutionary models. The mode of the age of PMS stars is about 0.8Myr. The initial mass function of IC1590 is derived. It appears to be a steeper shape ({Gamma}=-1.49{+/-}0.14) than that of the Salpeter/Kroupa initial mass function for the high-mass regime (m>1M{sun}). The signature of mass segregation is detected from the difference in the slopes of the initial mass functions for the inner (r<2.5') and outer regions of this cluster. We finally discuss the star formation history in NGC281.2021AJ....162..140Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/162/140CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/274 : Galactic O-Star Spectroscopic Survey (GOSSS) (Sota+, 2014)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/AJ/143/41 : UBVIc CCD photometry of star clusters Tr14 & Tr16 (Hur+, 2012)J/AJ/144/192 : Spitzer survey of Orion A & B. I. YSO catalog (Megeath+, 2012)J/A+A/537/A146 : Stellar models rotation. 0.8<M<120, Z=0.014 (Ekstrom+, 2012)J/A+A/538/A74 : Massive binaries in Cepheus OB2/3 region (Peter+, 2012)J/A+A/539/A74 : NGC1893 Chandra X-ray catalog (Caramazza+, 2012)J/PASJ/64/107 : Multiwavelength study of NGC 281 complex (Sharma+, 2012)J/other/Sci/337.444 : RV curves of Galactic massive O stars (Sana+, 2012)J/MNRAS/438/1451 : UBVIH{alpha} photometry of IC 1848 (Lim+, 2014)J/MNRAS/443/454 : UBVIH{alpha} photometry in NGC 1893 (Lim+, 2014)J/AJ/149/127 : The SOS project. IV. NGC 1624 and NGC 1931 (Lim+, 2015)J/MNRAS/446/3797 : Westerlund 2 UBVIc photometry (Hur+, 2015)J/A+A/594/A82 : XMM sources in IC 1805 (Rauw+, 2016)J/A+A/600/A20 : Lupus YSOs X-shooter spectroscopy (Alcala+, 2017)J/ApJS/230/3 : Optical & Spitzer photometry in IC 1805 (Sung+, 2017)J/MNRAS/473/849 : Mass segregation in Galactic stellar clusters (Dib+, 2018)J/MNRAS/477/1993 : NGC 1893 stars LSR velocities (Lim+, 2018)J/ApJS/244/28 : The 3rd MSFRs Omnibus X-ray Catalog (MOXC3) (Townsley+, 2019)J/MNRAS/490/2521 : Fractal Statistics in Young Star Clusters (Hetem+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/162/140https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/162/140http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/162/140https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/162/140https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/162/140http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/162/140GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/162/140/table2 (Photometric data for IC 1590)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/162/140/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/162/140/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/162/140/table2?GETtext/xml+votable180.050000true13.07666756.6532220.0055555555555555566/3011https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/162/140?format=asciiOpticalInfrareddefaultJ/AJ/162/140/table2Photometric data for IC 1590NVmag[0/4] Number of observations in Vmagmeta.numberintNV-I[0/4] Number of observations in V-Imeta.numberintNB-V[0/4] Number of observations in B-Vmeta.numberintNU-B[0/4] Number of observations in U-Bmeta.numberintNHa[0/2] Number of observations in Hameta.numberintEm?H{alpha} emission detected? (2)phys.emissMeasurecharSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/1593] Internal index numbermeta.id;meta.mainintRAJ2000[00] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[56] Degree of Declination (J2000)pos.eq.dec;meta.mainImag[8.98/20.2]? Apparent I band magnitudemagphot.mag;em.opt.IfloatnullableVmag[8.34/21.9]? Apparent V band magnitudemagphot.mag;em.opt.VfloatnullableV-I[0.15/3.6]? The (V-I) colormagphot.color;em.opt.V;em.opt.IfloatnullableB-V[-2.48/2.37]? The (B-V) colormagphot.color;em.opt.B;em.opt.VfloatnullableU-B[-0.86/2.37]? The (U-B) colormagphot.color;em.opt.U;em.opt.BfloatnullableHa[-2.03/0.77]? H{alpha} index (1)magspect.indexfloatnullablee_Imag[0.01/0.6]? Uncertainty in Imagmagstat.error;phot.magfloatnullablee_Vmag[0.01/10]? Uncertainty in Vmagmagstat.error;phot.magfloatnullablee_V-I[0.01/0.6]? Uncertainty in V-Imagstat.error;phot.color;em.opt.Vfloatnullablee_B-V[0.01/10]? Uncertainty in B-Vmagstat.error;phot.color;em.opt.Bfloatnullablee_U-B[0.01/10]? Uncertainty in U-Bmagstat.error;phot.color;em.opt.Ufloatnullablee_Ha[0.01/0.3]? Uncertainty in Hamagstat.errorfloatnullableNImag[0/5] Number of observations in Imagmeta.numberint