J/AJ/145/15ivo://CDS.VizieR/J/AJ/145/15doi:10.26093/cds/vizier.51450015CDSRebull L.M.Johnson C.H.Gibbs J.C.Linahan M.Sartore D.Laher R.,Legassie M.Armstrong J.D.Allen L.E.McGehee P.Padgett D.L.,Aryal S.Badura K.S.Canakapalli T.S.Carlson S.Clark M.Ezyk N.,Fagan J.Killingstad N.Koop S.McCanna T.Nishida M.M.Nuthmann T.R.,O'Bryan A.Pullinger A.Rameswaram A.Ravelomanantsoa T.Sprow H.,Tilley C.M.2025-07-04T20:09:17Z2014-03-23T17:41:08ZCDS support team

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

cds-question@unistra.frmolecular-cloudsinfrared-photometryvisible-astronomybroad-band-photometryyoung-stellar-objectsWe used archival Spitzer Space Telescope mid-infrared data to search for young stellar objects (YSOs) in the immediate vicinity of two bright-rimmed clouds, BRC 27 (part of CMa R1) and BRC 34 (part of the IC 1396 complex). These regions both appear to be actively forming young stars, perhaps triggered by the proximate OB stars. In BRC 27, we find clear infrared excesses around 22 of the 26 YSOs or YSO candidates identified in the literature, and identify 16 new YSO candidates that appear to have IR excesses. In BRC 34, the one literature-identified YSO has an IR excess, and we suggest 13 new YSO candidates in this region, including a new Class I object. Considering the entire ensemble, both BRCs are likely of comparable ages, within the uncertainties of small number statistics and without spectroscopy to confirm or refute the YSO candidates. Similarly, no clear conclusions can yet be drawn about any possible age gradients that may be present across the BRCs.2013AJ....145...15Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/145/15CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/AJ/143/61 : H{alpha} spectroscopy in IC 1396 HII region (Nakano+, 2012)J/ApJS/193/25 : The NAN complex. II. MIPS observations (Rebull+, 2011)J/ApJS/196/4 : New young star candidates in Taurus-Auriga (Rebull+, 2011)J/MNRAS/415/103 : IPHAS T Tauri candidates in IC 1396 (Barentsen+, 2011)J/ApJS/186/259 : Taurus Spitzer survey: new candidate members (Rebull+, 2010)J/ApJ/717/1067 : Triggered star formation in SFO 38 (Choudhury+, 2010)J/ApJS/181/321 : Properties of Spitzer c2d dark clouds (Evans+, 2009)J/ApJ/697/787 : The NAN complex. I. IRAC observations (Guieu+, 2009)J/ApJS/184/18 : Spitzer survey of young stellar clusters (Gutermuth+, 2009)J/A+A/506/711 : Canis Major R1 X-ray sources (Gregorio-Hetem+, 2009)J/MNRAS/396/964 : T Tauri in and around bright-rimmed clouds (Chauhan+, 2009)J/ApJ/674/336 : Spitzer observations of NGC 1333 (Gutermuth+, 2008)J/AJ/135/2323 : H{alpha} stars and HH objects near BRCs (Ikeda+, 2008)J/ApJ/663/1149 : Spitzer survey of Serpens YSO population (Harvey+, 2007)J/ApJ/660/1532 : Spitzer/IRAC-MIPS survey of NGC 2244 (Balog+, 2007)J/ApJ/654/316 : X-ray sources in IC 1396N (Getman+, 2007)J/PASJ/58/L29 : Low-mass stars JHK photometry in BRC 14 (Matsuyanagi+, 2006)J/AJ/123/2597 : H{alpha} stars and HH objects near BRCs (Ogura+, 2002)J/AJ/119/3026 : Circumstellar disk candidates in Orion (Rebull+, 2000)J/MNRAS/310/210 : Stellar composition of CMa R1 (Shevchenko+, 1999)J/A+A/309/581 : CO observations of clouds in IC 1396 region (Weikard +, 1996)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/145/15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/145/15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/145/15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/145/15https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/145/15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/145/15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/145/15/YSOs (Multiband measurements (table2) and notes (table3) of known YSOs, literature YSO candidates, and new Spitzer-identified YSO candidates in BRC 27 and BRC 34)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/145/15/YSOs?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/145/15/YSOs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/145/15/YSOs?GETtext/xml+votable180.050000true105.9675-11.350.0055555555555555566/15484 216432.4016587514425055e-21 3.5010283109654867e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/145/15?format=asciiOpticalInfrareddefaultJ/AJ/145/15/YSOsMultiband measurements (table2) and notes (table3) of known YSOs, literature YSO candidates, and new Spitzer-identified YSO candidates in BRC 27 and BRC 34Seq[1/56] Running sequence number \linkRole{notes about this YSO }meta.idintprimaryBRCBright-Rimmed Cloud number (27 or 34) (G1)meta.id.parentintIRxIR excess status (2)meta.code.classcharalphaSlope {alpha} of the SED between 2 and 24{mu}m (3)spect.indexfloatClSED class (I, II, III, or Flat) (4)meta.code.classcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPosition (derived from Name) (right ascension part)degpos.eq.ra;meta.main_DEPosition (derived from Name) (declination part)degpos.eq.dec;meta.mainNameName of the Young Stellar Object (YSO) <[RJG2013] JHHMMSS.s+DDMMSS> in Simbadmeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintONameOther(s) name(s) of the YSOmeta.idcharl_rmag[>] Lower limit flag on rmagmeta.code.errorcharrmagSloan r band magnitude (AB system)magphot.mag;em.opt.Rfloate_rmag? Error in rmagmagstat.error;phot.magfloatnullablel_imag[>] Lower limit flag on imagmeta.code.errorcharimagSloan i band magnitude (AB system)magphot.mag;em.opt.Ifloate_imag? Error in imagmagstat.error;phot.magfloatnullablel_Jmag[>] Lower limit flag on Jmagmeta.code.errorcharJmag? 2MASS J band magnitude (VEGA system)magphot.mag;em.IR.Jfloatnullablee_Jmag? Error in Jmagmagstat.error;phot.magfloatnullablel_Hmag[>] Lower limit flag on Hmagmeta.code.errorcharHmag2MASS H band magnitude (VEGA system)magphot.mag;em.IR.Hfloate_Hmag? Error in Hmagmagstat.error;phot.magfloatnullableKmag2MASS Ks band magnitude (VEGA system)magphot.mag;em.IR.Kfloate_KmagError in Kmagmagstat.error;phot.magfloat[3.6]Spitzer/IRAC 3.6{mu}m band VEGA magnitudemagphot.mag;em.IR.3-4umfloate_[3.6]Error in [3.6]magstat.errorfloat[4.5]Spitzer/IRAC 4.5{mu}m band VEGA magnitudemagphot.mag;em.IR.4-8umfloate_[4.5]Error in [4.5]magstat.errorfloat[5.8]Spitzer/IRAC 5.8{mu}m band VEGA magnitudemagphot.flux.density;em.IR.4-8umfloate_[5.8]Error in [5.8]magstat.errorfloat[8.0]Spitzer/IRAC 8.0{mu}m band VEGA magnitudemagphot.flux.density;em.IR.8-15umfloate_[8.0]Error in [8.0]magstat.errorfloatl_[24][>] Lower limit flag on [24]meta.code.errorchar[24]? Spitzer/MIPS 24{mu}m band VEGA magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_[24]? Error in [24]magstat.errorfloatnullable[70]? Spitzer/MIPS 70{mu}m band VEGA magnitudemagphot.flux.density;em.IR.30-60umfloatnullablee_[70]? Error in [70]magstat.errorfloatnullableYSOYSO status (1)meta.code.classcharJ/AJ/145/15/notesNotesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/56] Running sequence numbermeta.id;meta.mainintNoteNotes on individual objects as described in the textmeta.note