J/ApJ/818/95ivo://CDS.VizieR/J/ApJ/818/95doi:10.26093/cds/vizier.18180095CDSLiu H.-L.Li J.-Z.Wu Y.Yuan J.-H.Liu T.Dubner G.Paron S.,Ortega M.E.Molinari S.Huang M.Zavagno A.Samal M.R.Huang Y.-F.,Zhang S.-J.2017-06-27T06:38:01Z2016-05-27T09:21:09ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsinfrared-photometryh-ii-regionsThe physical mechanisms that induce the transformation of a certain mass of gas in new stars are far from being well understood. Infrared bubbles associated with H II regions have been considered to be good samples for investigating triggered star formation. In this paper we report on the investigation of the dust properties of the infrared bubble N4 around the H II region G11.898+0.747, analyzing its interaction with its surroundings and star formation histories therein, with the aim of determining the possibility of star formation triggered by the expansion of the bubble. Using Herschel PACS and SPIRE images with a wide wavelength coverage, we reveal the dust properties over the entire bubble. Meanwhile, we are able to identify six dust clumps surrounding the bubble, with a mean size of 0.50pc, temperature of about 22K, mean column density of 1.7x10^22^/cm2, mean volume density of about 4.4x10^4^/cm3, and a mean mass of 320M_{sun}_. In addition, from PAH emission seen at 8 {mu}m, free-free emission detected at 20cm, and a probability density function in special regions, we could identify clear signatures of the influence of the HII region on the surroundings. There are hints of star formation, though further investigation is required to demonstrate that N4 is the triggering source.2016ApJ...818...95Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/818/95CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/328 : AllWISE Data Release (Cutri+ 2013)VI/139 : Herschel Observation Log (Herschel Science Centre, 2013)VIII/96 : 6-GHz methanol multibeam maser catalogue (Caswell+, 2010-12)II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)VIII/58 : A Survey of Radio H II Regions in the Northern Sky (Lockman+ 1989)J/AJ/149/64 : MIPSGAL 24{mu}m point source catalog (Gutermuth+, 2015)J/A+A/566/A122 : JHK and IRAC photometry of Sh2-90 YSOs (Samal+, 2014)J/ApJS/209/31 : The MYStIX IR-Excess Source catalog (MIRES) (Povich+, 2013)J/ApJS/208/11 : The Red MSX Source Survey: massive protostars (Lumsden+, 2013)J/ApJS/205/1 : CORNISH project. II. Source catalog (Purcell+, 2013)J/ApJ/710/150 : Molecular lines in EGOs (Chen+, 2010)J/ApJ/706/83 : Embedded YSO candidates in W51 (Kang+, 2009)J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)J/ApJ/696/1278 : The extended star-forming environment of M17 (Povich+, 2009)J/A+A/496/177 : JHKs and GLIMPSE photometry of RCW 120 (Deharveng+, 2009)J/AJ/136/2391 : GLIMPSE Extended Green Objects catalog (Cyganowski+, 2008)J/A+A/487/993 : MAMBO Mapping of c2d Clouds and Cores (Kauffmann+, 2008)J/A+A/482/585 : JHK photometry of stars in Sh 2-212 (Deharveng+, 2008)J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)J/ApJ/670/428 : Bubbles in the galactic disk. II. (Churchwell+, 2007)J/A+A/472/835 : JHKs and GLIMPSE photometry of RCW 120 (Zavagno+, 2007)J/ApJ/653/1226 : Physical properties of galactic HII regions (Quireza+, 2006)J/ApJ/649/759 : Bubbles in the galactic disk (Churchwell+, 2006)J/AJ/131/2525 : MAGPIS 20cm survey (Helfand+, 2006)J/MNRAS/363/405 : SIMBA observations of cold cores (Hill+, 2005)J/A+A/417/615 : Maser and outflows in UC HII region (Codella+, 2004)J/A+AS/137/43 : OH/H2O masers database (Forster+, 1999)J/ApJS/91/659 : Ultracompact HII regions radio images (Kurtz+ 1994)http://third.ucllnl.org/gps/ : MAGPIS home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/818/95https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/818/95http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/818/95https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/818/95https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/818/95http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/818/95GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/818/95/ysocand (YSO candidates and photometry from AllWISE)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/818/95/ysocand?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/818/95/ysocand?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/818/95/ysocand?GETtext/xml+votable180.050000true272.132875-18.27752780.0055555555555555566/291028.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/818/95?format=asciiInfrareddefaultJ/ApJ/818/95/ysocandYSO candidates and photometry from AllWISErecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqRunning sequence numbermeta.idcharRAdegRight ascension in decimal degrees (J2000)degpos.eq.raDEdegDeclination in decimal degrees (J2000)degpos.eq.decN[4/11] Number of data points used in the SED fittingmeta.numberintChi2[0.1/47.7] Best {xi}^2^ of the resulting SEDstat.fit.chi2floatClassYSO classificationsrc.classcharWISEASource identifier (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharf_WISEA[a-e] Flag on WISEA (1)meta.codecharW1mag[8/12.1] WISE 3.4 micron band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_W1mag[0.02/0.09] Uncertainty in W1magmagstat.error;phot.magfloatnullableW2mag[6.9/12.6] WISE 4.6 micron band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_W2mag[0.02/0.08] Uncertainty in W2magmagstat.error;phot.magfloatnullableW3mag[2.8/8.9] WISE 12 micron band magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_W3mag[0.01/0.2] Uncertainty in W3magmagstat.error;phot.magfloatnullableW4mag[0.2/6.5] WISE 22 micron band magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_W4mag[0.009/0.2] Uncertainty in W4magmagstat.error;phot.magfloatnullableJmag[9/17]? 2MASS J band magnitude (2)magphot.mag;em.IR.Jfloatnullablee_Jmag[0.02/0.2]? Uncertainty in Jmag (2)magstat.error;phot.mag;em.IR.JfloatnullableHmag[8.4/14.2]? 2MASS H band magnitude (2)magphot.mag;em.IR.Hfloatnullablee_Hmag[0.02/0.2]? Uncertainty in Hmag (2)magstat.error;phot.mag;em.IR.HfloatnullableKsmag[8.2/13.1]? 2MASS Ks band magnitude (2)magphot.mag;em.IR.Kfloatnullablee_Ksmag[0.01/0.08]? Uncertainty in Ksmag (2)magstat.error;phot.mag;em.IR.KfloatnullableGLIMPSEDisplay the GLIMPSE data (II/293) within 3"meta.ref.urlintnullable2MDisplay the 2MASS data (Cutri+, 2003, II/246) within 2"meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from AllWISE names (Cutri+, 2013, II/328) or MIPSGAL 24um (Gutermuth+, 2015, J/AJ/149/64) (right ascension part)degpos.eq.ra;meta.main_DEPositions from AllWISE names (Cutri+, 2013, II/328) or MIPSGAL 24um (Gutermuth+, 2015, J/AJ/149/64) (declination part)degpos.eq.dec;meta.main