J/MNRAS/415/103ivo://CDS.VizieR/J/MNRAS/415/103doi:10.26093/cds/vizier.74150103CDSBarentsen G.Vink J.S.Drew J.E.Greimel R.Wright N.J.Drake J.J.,Martin E.L.Valdivielso L.Corradi R.L.M.2024-07-14T20:15:23Z2012-03-26T14:42:56ZCDS support team

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

cds-question@unistra.fropen-star-clusterspre-main-sequence-starsinfrared-photometryvisible-astronomyh-alpha-photometrymillimeter-astronomyphotometrysubmillimeter-astronomyThe Isaac Newton Telescope (INT) Photometric H-Alpha Survey (IPHAS) is a 1800deg^2^ survey of the Northern Galactic Plane, reaching down to r'~21. We demonstrate how the survey can be used to (1) reliably select classical T Tauri star candidates and (2) constrain the mass accretion rates with an estimated relative uncertainty of 0.6dex. IPHAS is a necessary addition to spectroscopic surveys because it allows large and uniform samples of accretion rates to be obtained with a precise handle on the selection effects. We apply the method on a region of 7deg^2^ towards the HII region IC 1396 in Cepheus OB2 and identify 158 pre-main-sequence candidates with masses between 0.2 and 2.0M_{sun}_ and accretion rates between 10-9.2 and 10-7.0M_{sun}_/yr.2011MNRAS.415..103Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/415/103CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/415/103https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/415/103http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/415/103https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/415/103https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/415/103http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/415/103GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/415/103/TTau (Data for T Tauri candidates towards IC 1396)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/415/103/TTau?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/415/103/TTau?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/415/103/TTau?GETtext/xml+votable180.050000true322.535708357.95761110.005555555555555556Cone search capability for table J/MNRAS/415/103/tablee1 (*IPHAS and 2MASS photometry of objects towards IC 1396 which, based on their outlier position in the (r-Ha, r'-i') diagrams, are likely to be H{alpha} emission-line objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/415/103/tablee1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/415/103/tablee1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/415/103/tablee1?GETtext/xml+votable180.050000true323.55187556.42211110.0055555555555555565/3869 6/15454-15455 15473 15475 15481 15484-15485 15626 15648 156506.772611666688002e-21 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/415/103?format=asciiOpticalInfraredRadiodefaultJ/MNRAS/415/103/TTauData for T Tauri candidates towards IC 1396ONameOther name (4)meta.idchare_AgeError on Age (lower value) (3)Myrstat.error;time.agefloatu_KmagUncertainty flag on Kmagmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_SeqSimbad column added by the CDSmeta.ref.urlcharSeqSequential numbermeta.recordintIPHASIPHAS designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharprimaryr'magIPHAS r' magnitudemagphot.mag;em.opt.Rfloate_r'magrms uncertainty on r'magmagstat.error;phot.mag;em.opt.Rfloatr'-i'IPHAS r'-i' colour indexmagphot.color;em.opt.R;em.opt.Ifloate_r'-i'rms uncertainty on r'-i'magstat.errorfloatr'-HaIPHAS r'-H{alpha} colour indexmagphot.color;em.opt.V;em.line.Halphafloate_r'-Harms uncertainty on r'-Hamagstat.errorfloatl_JmagLimit flag on Jmagmeta.code.errorcharJmag? 2MASS J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on Jmagmagstat.error;phot.mag;em.IR.Jfloatnullableu_JmagUncertainty flag on Jmagmeta.code.errorcharl_HmagLimit flag on Hmagmeta.code.errorcharHmag? 2MASS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on Hmagmagstat.error;phot.mag;em.IR.Hfloatnullableu_HmagUncertainty flag on Hmagmeta.code.errorcharl_KmagLimit flag on Kmagmeta.code.errorcharKmag? 2MASS Ks magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on Kmagmagstat.error;phot.mag;em.IR.KfloatnullableSimbadSimbad column added by the CDSmeta.refcharAgeAge (1)Myrtime.agefloatE_AgeError on Age (upper value) (3)Myrstat.error;stat.maxfloatMMass (1)solMassphys.massfloate_Mrms uncertainty on Mass (3)solMassstat.errorfloatRRadius (1)solRadphys.size.radiusfloate_Rrms uncertainty on Radius (3)solRadstat.errorfloatWHaH{alpha} equivalent width (2)0.1nmspect.line.eqWidth;em.line.Halphainte_WHarms uncertainty on WHa (3)0.1nmstat.errorintlogLHaH{alpha} luminositylog(solLum)phys.luminosity;em.line.Halphafloate_logLHarms uncertainty on logLHa (3)log(solLum)stat.errorfloatlogdM/dtMass losslog(solMass.yr**-1)phys.mass.lossfloate_logdM/dtrms uncertainty on logdM/dt (3)log(solMass.yr**-1)stat.errorfloat_RARight ascension (derived from IPHAS) for Eq=J2000degpos.eq.ra;meta.main_DEDeclination (derived from IPHAS) for Eq=J2000degpos.eq.dec;meta.mainJ/MNRAS/415/103/tabled1*Spitzer IRAC and MIPS magnitudes for the T Tauri candidates in the central regionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIPHASIPHAS designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.mainchar[3.6]Spitzer/IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umfloate_[3.6]rms uncertainty on [3.6] (1)magstat.errorfloat[4.5]Spitzer/IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umfloate_[4.5]rms uncertainty on [4.5] (1)magstat.errorfloat[5.8]Spitzer/IRAC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloate_[5.8]rms uncertainty on [5.8] (1)magstat.errorfloat[8.0]Spitzer/IRAC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloate_[8.0]rms uncertainty on [8.0] (1)magstat.errorfloat[24]? Spitzer/MIPS 24um magnitudemagphot.flux.density;em.IR.15-30umfloatnullablee_[24]? rms uncertainty on [24] (1)magstat.errorfloatnullableJ/MNRAS/415/103/tablee1*IPHAS and 2MASS photometry of objects towards IC 1396 which, based on their outlier position in the (r-Ha, r'-i') diagrams, are likely to be H{alpha} emission-line objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIPHASIPHAS designation (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharr'magIPHAS r' magnitudemagphot.mag;em.opt.Rfloate_r'magrms uncertainty on r'magmagstat.error;phot.mag;em.opt.Rfloatr'-i'IPHAS r'-i' colour indexmagphot.color;em.opt.R;em.opt.Ifloate_r'-i'rms uncertainty on r'-i'magstat.errorfloatr'-HaIPHAS r'-H{alpha} colour indexmagphot.color;em.opt.V;em.line.Halphafloate_r'-Harms uncertainty on r'-Hamagstat.errorfloatl_JmagLimit flag on Jmagmeta.code.errorcharJmag? 2MASS J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on Jmagmagstat.error;phot.mag;em.IR.Jfloatnullableu_JmagUncertainty flag on Jmagmeta.code.errorcharl_HmagLimit flag on Hmagmeta.code.errorcharHmag? 2MASS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on Hmagmagstat.error;phot.mag;em.IR.Hfloatnullableu_HmagUncertainty flag on Hmagmeta.code.errorcharl_KmagLimit flag on Kmagmeta.code.errorcharKmag? 2MASS Ks magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on Kmagmagstat.error;phot.mag;em.IR.Kfloatnullableu_KmagUncertainty flag on Kmagmeta.code.errorcharONameOther name (4)meta.idcharSimbadSimbad column added by the CDSmeta.refchar_RARight ascension (derived from IPHAS) for Eq=J2000degpos.eq.ra;meta.main_DEDeclination (derived from IPHAS) for Eq=J2000degpos.eq.dec;meta.mainSeqSequential numbermeta.recordint