J/ApJ/905/61ivo://CDS.VizieR/J/ApJ/905/61doi:10.26093/cds/vizier.19050061CDSPanwar N.Sharma S.Ojha D.K.Baug T.Dewangan L.K.Bhatt B.C.,Pandey R.2022-08-26T08:14:20Z2022-07-29T14:12:26ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsinfrared-photometryh-ii-regionsWe report the observational findings of the Sh2-112 HII region by using the multiwavelength data analysis ranging from optical to radio wavelengths. This region is powered by the massive O8V-type star BD+45{deg}3216. The surface density distribution and minimum spanning tree analyses of the young stellar object (YSO) candidates in the region reveal their groupings toward the western periphery of the HII region. A GMRT radio continuum emission peak is found toward the northwest boundary of the HII region and is investigated as a compact/ultracompact HII region candidate powered by a B0-B0.5-type star. Toward the southwest direction, a prominent curved rim-like structure is found in the H{alpha} image and GMRT radio continuum maps, where the H_2_ and ^13^CO emission is also observed. These results suggest the existence of the ionized boundary layer (IBL) on the surface of the molecular cloud. This IBL is found to be overpressured with respect to the internal pressure of the surrounding molecular cloud. This implies that the shocks are propagating/propagated into the molecular cloud, and the young stars identified within it are likely triggered due to the massive star. It is also found that this region is ionization-bounded toward the west and density-bounded toward the east. Based on the distribution of the ionized gas, molecular material, and YSO candidates, we propose that the Sh2-112 HII region is a good candidate for the blister-type HII region that has been evolved on the surface of a cylindrical molecular cloud.2020ApJ...905...61Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/905/61CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/cfht : Log of CFHT Exposures (CADC, 1979-)III/92 : A Library of Stellar Spectra (Jacoby+ 1984)III/195 : Atlas of Optical Spectral Classification OB Stars (Walborn+ 1990)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)II/319 : UKIDSS-DR9 LAS, GCS and DXS Surveys (Lawrence+ 2012)II/328 : AllWISE Data Release (Cutri+ 2013)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)VI/128 : Log of CGPS exposures (Taylor+, 2003-)VII/20 : Catalogue of HII Regions (Sharpless 1959)J/A+AS/103/97 : Grids of stellar models V. (Meynet+ 1994)J/AJ/129/856 : Herbig Ae/Be stars in nearby OB assoc. (Hernandez+, 2005)J/MNRAS/379/1237 : VIcJHK phot. of NGC 1893 Halpha sources (Maheswar+, 2007)J/MNRAS/396/964 : T Tauri in and around bright-rimmed clouds (Chauhan+, 2009)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/MNRAS/418/1689 : Red MSX water maser and ammonia emissions (Urquhart+, 2011)J/ApJ/759/48 : YSOs in the Galactic HII region Sh2-297 (Mallick+, 2012)J/ApJ/755/40 : HII regions in the MCs from MCELS (Pellegrini+, 2012)J/MNRAS/430/1125 : RMS survey: NIR spectroscopy of massive YSOs (Cooper+, 2013)J/ApJ/779/113 : IR photometry of YSOs in the W40 region (Mallick+, 2013)J/MNRAS/439/3719 : Embedded clusters infrared photometry (Chavarria+, 2014)J/MNRAS/443/1614 : YSOs in BRC 5, 7 and 39 (Panwar+, 2014)J/MNRAS/454/4335 : Multiwavelenght photometry of Sh 2-138 YSOs (Baug+, 2015)J/MNRAS/452/637 : Distance-limited sample of MYSOs (Maud+, 2015)J/MNRAS/453/645 : Massive mol. outflows distance-limited sample (Maud+, 2015)J/AJ/151/126 : Phot. of YSOs in eight bright-rimmed clouds (Sharma+, 2016)J/MNRAS/468/2684 : IC1805 YSOs (Panwar+, 2017)J/MNRAS/467/2943 : NGC 7538 region YSOs (Sharma+, 2017)J/AJ/157/112 : IR phot. of YSOs in the W4 cloud complex (Panwar+, 2019)J/ApJ/891/81 : Deep opt. and infrared photometry of Sh2-305 (Pandey+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/905/61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/905/61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/905/61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/905/61https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/905/61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/905/61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/905/61/table2 (YSO candidates from 2MASS/UKIDSS and WISE data)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/905/61/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/905/61/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/905/61/table2?GETtext/xml+votable180.050000true308.4375845.469861110.0055555555555555566/14713 147168.157980699529898e-21 1.692669228152603e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/905/61?format=asciiInfrareddefaultJ/ApJ/905/61/table2YSO candidates from 2MASS/UKIDSS and WISE datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/138] Running sequence numbermeta.id;meta.mainintRAJ2000[308.28/308.64] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[45.46/45.76] Declination (J2000)degpos.eq.dec;meta.mainJmag[8.48/20.96] 2MASS/UKIDSS J band magnitude (1)magphot.mag;em.IR.Jfloate_Jmag[0.002/0.5]? Uncertainty in Jmagmagstat.error;phot.magfloatnullableHmag[7/18.53] 2MASS/UKIDSS H band magnitude (1)magphot.mag;em.IR.Hfloate_Hmag[0.001/0.14]? Uncertainty in Hmagmagstat.error;phot.magfloatnullableKmag[6.2/17.5] 2MASS/UKIDSS K band magnitude (1)magphot.mag;em.IR.Kfloate_Kmag[0.001/0.14] Uncertanity in Kmagmagstat.error;phot.magfloatW1mag[5.73/13]? WISE band 1 [3.4um] magnitudemagphot.mag;em.IR.3-4umfloatnullablee_W1mag[0.02/0.14]? Uncertainty in W1magmagstat.error;phot.magfloatnullableW2mag[5.17/12.5]? WISE band 2 [4.6um] magnitudemagphot.mag;em.IR.4-8umfloatnullablee_W2mag[0.019/0.13]? Uncertainty in W2magmagstat.error;phot.magfloatnullableW3mag[4.52/9.41]? WISE band 3 [12um] magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_W3mag[0.014/0.2]? Uncertainty in W3magmagstat.error;phot.magfloatnullableW4mag[0.96/9.18]? WISE band 4 [22um] magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_W4mag[0.02/0.51]? Uncertainty in W4magmagstat.error;phot.magfloatnullableFlagSelection flag -- Color-Color/Color-Magnitude diagram used ("NIR", "WISE", "WISE/NIR")meta.code.errorchar2MASSDisplay data from 2MASS (II/246) within 3"meta.ref.urlintnullableWISEADisplay data from AllWISE (II/328) within 3"meta.ref.urlintnullable