J/A+A/463/275ivo://CDS.VizieR/J/A+A/463/275doi:10.26093/cds/vizier.34630275CDSGiardino G.Favata F.Micela G.Sciortino S.Winston E.2007-12-01T06:33:58Z2007-12-01T07:29:55ZCDS support team

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

cds-question@unistra.frstellar-associationsyoung-stellar-objectspre-main-sequence-starsx-ray-sourcesTo study the properties of X-ray emission from young stellar objects (YSOs) through their evolution from Class I to Class III and determine whether Class 0 protostars emit X-rays. A deep Chandra X-ray observation of the Serpens star-forming region was obtained. The Serpens Cloud Core is ideally suited for this type of investigation, being populated by a dense and extremely young cluster whose members are found in all evolutionary stages, including six well-studied Class 0 sources.2007A&A...463..275Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/463/275CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/252 : The USNO-A2.0 Catalogue (Monet+ 1998)I/259 : The Tycho-2 Catalogue (Hog+ 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/463/275https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/463/275http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/463/275https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/463/275https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/463/275http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/463/275GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/463/275/table5 (X-ray sources detected with PWDETECT in the Chandra observation of the Serpens star forming region.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/463/275/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/463/275/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/463/275/table5?GETtext/xml+votable180.050000true277.2951.2005560.005555555555555556Cone search capability for table J/A+A/463/275/table6 (The cross-identification of the sources below was obtained from the Simbad database, with a search radius of 5 arcsec.)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/463/275/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/463/275/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/463/275/table6?GETtext/xml+votable180.050000true277.3654171.2161110.0055555555555555566/303668.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/463/275?format=asciiX-raydefaultJ/A+A/463/275/table5X-ray sources detected with PWDETECT in the Chandra observation of the Serpens star forming region.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[GFM2007]Sequential numbermeta.recordintprimaryn_[GFM2007][*] *: sources associated with the elongated PSF of source 48 (SVS 20)meta.notecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainCRCount Ratect/ksphot.count;em.X-rayfloate_CRrms uncertainty on CRct/ksstat.errorfloatJmag? 2MASS counterpart J magnitude (1)magphot.mag;em.IR.JfloatnullableHmag? 2MASS counterpart H magnitude (1)magphot.mag;em.IR.HfloatnullableKmag? 2MASS counterpart K magnitude (1)magphot.mag;em.IR.Kfloatnullabler? radial distance from the 2MASS counterpart (1)arcsecphys.angSizefloatnullableOpt[UT0-] Associations with (T)ycho 2 (I/259) or (U)SNO-A2 (I/252) optical catalog sources (1)meta.codecharBmag? B magnitude (1)magphot.mag;em.opt.BfloatnullableV/Rmag? Tycho2 V magnitude or USNOA-2.0 R magnitude (1)magphot.magfloatnullableISO? ISO number, [KOB2004] NNN in Simbad (2)meta.id.crossintnullablen_ISO[*] *: distance of ISO source greater than 3"meta.notecharclISOISO classification (2) (4)meta.code.classcharIRsrc? Spitzer IR source number (3)meta.id.crossintnullableu_IRsrc[)] Uncertaitny flag on IRsrc (5)meta.code.errorcharn_IRsrc[+] +: matching distance >1" (5)meta.notecharYSO? Spitzer YSO number (3)meta.id.crossintnullableclYSOYSO classification (3) (4)meta.code.classcharCIindicates a cross-identification in table6meta.ref.urlchar2MASSShow 2MASS datameta.ref.urlcharJ/A+A/463/275/table6The cross-identification of the sources below was obtained from the Simbad database, with a search radius of 5 arcsec.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[GFM2007]Sequential numbermeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainCrossIdCross-identifications (1)meta.notechar