J/ApJ/693/430ivo://CDS.VizieR/J/ApJ/693/430doi:10.26093/cds/vizier.16930430CDSChen Y.Yao Y.Yang J.Zeng Q.Sato S.2017-07-12T06:59:53Z2011-03-23T14:19:19ZCDS support team

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

cds-question@unistra.frinfrared-photometryh-ii-regionsyoung-stellar-objectsNear-infrared JHK' and H_2_{nu}=1-0S(1) imaging observations of the star-forming regions Sh2-157 and Sh2-152 are presented. The data reveal a cluster of young stars associated with H_2_ line emission in each region. Additionally, many IR point sources are found in the dense core of each molecular cloud. Most of these sources exhibit infrared color excesses typical of T Tauri stars, Herbig Ae/Be stars, and protostars. Several display the characteristics of massive stars. We calculate histograms of the K'-magnitude and [H-K'] color for all sources, as well as two-color and color-magnitude diagrams. The stellar populations inside and outside the clusters are similar, suggesting that these systems are rather evolved. Shock-driven H_2_ emission knots are also detected, which may be related to evident subclusters in an earlier evolutionary stage.2009ApJ...693..430Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/693/430CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/other/PASA/26.439 : K-band images of star-forming regions (Longmore+, 2009)J/MNRAS/390/1185 : JHK photometry in 2 star-forming regions (Anandarao+,J/ApJ/596/1064 : JHKs photometry of S269 (Jiang+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/693/430https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/693/430http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/693/430https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/693/430https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/693/430http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/693/430GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/693/430/phot (Combined table from original tables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/693/430/phot?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/693/430/phot?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/693/430/phot?GETtext/xml+votable180.050000true344.679666758.80977780.0055555555555555566/14304 14306 143098.515297826287473e-20 9.87774365114772e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/693/430?format=asciiInfrareddefaultJ/ApJ/693/430/photCombined table from original tablesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSh2Simbad column added by the CDSmeta.id.parentintnullableNIRSRunning sequence number (<[CYY2009] Sh 2-15[27] NIRS NNN> in Simbad)meta.id;meta.mainintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainK'magOASIS K'-band magnitude (2.16um)magphot.mag;em.IR.KfloatH-K'? OASIS H-K' color index (1)magphot.color;em.IR.H;em.IR.KfloatnullableJ-H? OASIS J-H color indexmagphot.color;em.IR.J;em.IR.Hfloatnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlchar