J/ApJ/939/46ivo://CDS.VizieR/J/ApJ/939/46doi:10.26093/cds/vizier.19390046CDSPanja A.Sun Y.Chen W.P.Mondal S.2025-02-18T20:14:25Z2024-11-19T17:23:52ZCDS support team

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

cds-question@unistra.frh-ii-regionsyoung-stellar-objectsmolecular-cloudsinfrared-photometryvisible-astronomyh-alpha-photometryspectroscopystellar-distancemillimeter-astronomysubmillimeter-astronomyWe present the star formation activity around the emission nebula Sh2-112. At a distance of ~2.1kpc, this HII complex, itself 3pc in radius, is illuminated by the massive star (O8 V) BD+45 3216. The associated molecular cloud extends in angular scales of 2.0x0.83{deg}, corresponding to linear sizes of 73pc by 30pc, along the Galactic longitude. The high-resolution (30") extinction map reveals a chain of dust clumps aligned with the filament-like structure with an average extinction of A_V_~2.78mag, varying up to a maximum of ~17mag. Our analysis led to identification of a rich population (~500) of young (average age of ~1Myr) stars, plus a numerous number (~350) of H{alpha} emitters, spatially correlated with the filamentary clouds. Located near the edge of the cloud, the luminous star BD+45 3216 has created an arc-like pattern as the ionizing radiation encounters the dense gas, forming a blister-shaped morphology. We found three distinct young stellar groups, all coincident with relatively dense parts of the cloud complex, signifying ongoing star formation. Moreover, the cloud filament (excitation temperature ~10K) traced by the CO isotopologues and extending nearly ~80pc is devoid of ionized gas except at the dense cores (excitation temperature ~28-32K) wherein significant ionized emission excited by OB stars (dynamical age ~0.18-1.0Myr) pertains. The radial velocity is dynamic (median ~-3.65km/s) along the main filament, increasing from Galactic east to west, indicating mass flow to form the massive stars/clusters at the central hubs.2022ApJ...939...46Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/939/46CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/50 : CO Radial Velocities Toward Galactic H II Regions (Blitz+ 1982)III/92 : A Library of Stellar Spectra (Jacoby+ 1984)III/195 : Atlas of Optical Spectral Classification OB Stars (Walborn+ 1990)III/181 : Near Infrared Spectra of Normal Stars (Torres-Dodgen+ 1993)III/179 : Southern MK Standards 5800-10200A (Danks+ 1994)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VII/233 : 2MASS All-Sky Extended Source Catalog (XSC) (IPAC/UMass, 2003-2006)II/311 : WISE All-Sky Data Release (Cutri+ 2012)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/321 : IPHAS DR2 Source Catalogue (Barentsen+, 2014)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)I/352 : Distances to 1.47 billion stars in Gaia EDR3 (Bailer-Jones+, 2021)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)J/A+A/457/637 : UBVJHK synthetic phot. of Galactic O stars (Martins+, 2006)J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)J/A+A/501/539 : RMS survey. 6cm observations of YSOs (Urquhart+, 2009)J/ApJ/770/1 : YSO candidates in G38.9-0.4 region (Alexander+, 2013)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/ApJS/221/26 : Radio obs. of Galactic WISE HII regions (Anderson+, 2015)J/MNRAS/453/645 : Massive molecular outflows sample (Maud+, 2015)J/A+A/592/A54 : Combined ArTeMiS+SPIRE 350um image of NGC6334 (Andre+, 2016)J/A+A/594/A28 : Planck Catalog of Galactic cold clumps (PGCC) (Planck+, 2016)J/ApJ/885/131 : High-mass SFR plx & proper motion with VLBI (Reid+, 2019)J/AJ/159/153 : Opt & IR photometry in the HII region Sh2-242 (Panja+, 2020)J/ApJ/905/61 : YSO candidates in the HII region SH 2-112 (Panwar+, 2020)J/MNRAS/500/3123 : Star formation in clumps of the NAN complex (Das+, 2021)J/ApJ/910/80 : Photometry and astrometry of M36 members (Panja+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/939/46https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/939/46http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/939/46https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/939/46https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/939/46http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/939/46GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/939/46/table1 (Photometric catalog of the YSOs toward S112)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/939/46/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/939/46/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/939/46/table1?GETtext/xml+votable180.050000true308.189024645.329458390.005555555555555556Cone search capability for table J/ApJ/939/46/table2 (Photometric catalog of the H{alpha} emitters toward S112)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/939/46/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/939/46/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/939/46/table2?GETtext/xml+votable180.050000true308.2520687745.200202840.0055555555555555565/3678 6/14716-147188.157980699529898e-21 4.621782916333392e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/939/46?format=asciiOpticalInfraredMillimeterdefaultJ/ApJ/939/46/table1Photometric catalog of the YSOs toward S112recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.raindexedGLON[82.76/84.77] Galactic longitudedegpos.galactic.lon;meta.mainGLAT[2.81/3.74] Galactic latitudedegpos.galactic.lat;meta.mainClassYSO class (1)meta.code.classcharW1mag[3.44/16.22]? WISE/W1 3.35 micron band apparent magnitudemagphot.mag;em.IR.3-4umfloatnullablee_W1mag[0.007/0.2]? Uncertainty in W1magmagstat.error;phot.mag;em.IR.3-4umfloatnullableW2mag[1.59/15.04]? WISE/W2 4.6 micron band apparent magnitudemagphot.mag;em.IR.4-8umfloatnullablee_W2mag[0.004/1.2]? Uncertainty in W2magmagstat.error;phot.mag;em.IR.4-8umfloatnullableW3mag[-0.99/12.7]? WISE/W3 11.6 micron band apparent magnitudemagphot.mag;em.IR.8-15umfloatnullablee_W3mag[0.007/0.6]? Uncertainty in W3magmagstat.error;phot.mag;em.IR.8-15umfloatnullableSeq[1/353] Running sequence number within Classmeta.id.part;meta.mainintW4mag[-4.5/9.3]? WISE/W4 22.1 micron band apparent magnitudemagphot.mag;em.IR.15-30umfloatnullablee_W4mag[0.001/0.6]? Uncertainty in W4magmagstat.error;phot.mag;em.IR.15-30umfloatnullableJmag[9.88/19.41]? 2MASS J band 1.25 micron apparent magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0.001/0.2]? Uncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag[8.48/17.9]? 2MASS H band 1.65 micron apparent magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag[0/10]? Uncertainty in Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKsmag[6.77/16.92]? 2MASS Ks band 2.17 micron apparent magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag[0/10]? Uncertainty in Ksmagmagstat.error;phot.mag;em.IR.KfloatnullableGmag[12.55/21.13]? Gaia DR2 broad G band mean apparent magnitudemagphot.mag;stat.mean;em.optfloatnullablee_Gmag[0/0.08]? Uncertainty in Gmagmagstat.error;phot.mag;em.optfloatnullableBPmag[12.95/21.8]? Gaia DR2 Blue band integrated mean apparent magnitudemagphot.mag;stat.mean;em.opt.Bfloatnullablee_BPmag[0.002/0.6]? Uncertainty in BPmagmagstat.error;phot.mag;em.opt.BfloatnullableRPmag[11.99/19.23]? Gaia DR2 Red band integrated mean apparent magnitudemagphot.mag;stat.mean;em.opt.Rfloatnullablee_RPmag[0.001/0.3]? Uncertainty in RPmagmagstat.error;phot.mag;em.opt.RfloatnullableDist[0.07/7.2]? Estimated Gaia DR2 distancekpcpos.distancefloatnullablee_Dist[0/2]? Lower uncertainty in Distkpcstat.error;stat.min;pos.distancefloatnullableE_Dist[0/2.6]? Upper uncertainty in Distkpcstat.error;stat.max;pos.distancefloatnullableWISEDisplay data from WISE (II/311) within 1"meta.ref.urlchar2MDisplay the 2MASS data (II/246) within 1"meta.ref.urlcharGaiaDR2Display the Gaia DR2 data (I/345) within 1"meta.ref.urlchar_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decindexedJ/ApJ/939/46/table2Photometric catalog of the H{alpha} emitters toward S112IPHASDisplay the IPHAS DR2 data (II/321) within 3"meta.ref.urlcharDist[0.14/4.5]? Estimated Gaia DR2 distancekpcpos.distancefloatnullablee_Dist[0/1.5]? Lower uncertainty in Distkpcstat.error;stat.min;pos.distancefloatnullableE_Dist[0/2.3]? Upper uncertainty in Distkpcstat.error;stat.max;pos.distancefloatnullable_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.raindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decindexedrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/357] Running sequence numbermeta.id;meta.mainintGLON[82.77/84.75] Galactic longitudedegpos.galactic.lon;meta.mainGLAT[2.86/3.7] Galactic latitudedegpos.galactic.lat;meta.mainrmag[12/20] IPHAS r band apparent magnitudemagphot.mag;em.opt.Rfloate_rmag[0/0.07] Uncertainty in rmagmagstat.error;phot.mag;em.opt.Rfloatimag[10.92/19.35] IPHAS i band apparent magnitudemagphot.mag;em.opt.Ifloate_imag[0/0.08] Uncertainty in imagmagstat.error;phot.mag;em.opt.IfloatClassYSO class (1)meta.code.classcharHamag[10.96/18.93] IPHAS H{alpha} band apparent magnitudemagphot.mag;em.line.Halphafloate_Hamag[0/0.08] Uncertainty in Hamagmagstat.error;phot.mag;em.line.Halphafloat