J/ApJ/868/47ivo://CDS.VizieR/J/ApJ/868/47doi:10.26093/cds/vizier.18680047CDSKennea J.A.Coe M.J.Evans P.A.Waters J.Jasko R.E.2019-11-20T08:49:34Z2019-11-20T09:24:12ZCDS support team

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

cds-question@unistra.frx-ray-sourcesastronomical-object-identificationsurveysmagellanic-cloudsThe Swift Small Magellanic Cloud (SMC) Survey, S-CUBED, is a high-cadence shallow X-ray survey of the SMC. The survey consists of 142 tiled pointings covering the optical extent of the SMC, which is performed weekly by NASA's Neil Gehrels Swift Observatory, with an exposure per tile of 60s. The survey is focused on discovery and monitoring of X-ray outbursts from the large known and unknown population of Be/X-ray binaries (BeXRBs) in the SMC. Given the very low background of Swift's X-ray telescope, even with a short exposure per tile, S-CUBED is typically sensitive to outbursts in the SMC at >1%-2% Eddington luminosity for a typical 1.4M_{sun}_ neutron star compact object. This sensitivity, combined with the high cadence and the fact that the survey can be performed all year round, makes it a powerful discovery tool for outbursting accreting X-ray pulsars in the SMC. In this paper we describe results from the first year of observations of S-CUBED, which includes the 1SCUBEDX catalog of 265 X-ray sources, 160 of which are not identified with any previously cataloged X-ray source. We report on bulk properties of sources in the 1SCUBEDX catalog. Finally, we focus on results of S-CUBED observations of several interesting sources, which includes discovery of three Type II outbursts from BeXRBs and the detection of Type I outbursts and orbital periods in six BeXRB systems.2018ApJ...868...47Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/868/47CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/swift : Swift Master Catalog (HEASARC, 2004-)IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)II/236 : UBVR CCD survey of the Magellanic clouds (Massey+, 2002)II/288 : IRSF Magellanic Clouds Point Source Catalog (Kato+ 2007)VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)J/A+AS/102/451 : Emission-line stars and PNe in the SMC (Meyssonnier+ 1993)J/A+AS/142/41 : SMC X-ray sources ROSAT PSPC catalogue (Haberl+, 2000)J/MNRAS/353/601 : 2dF survey of the Small Magellanic Cloud (Evans+, 2004)J/AJ/127/1531 : Star formation history of SMC (Harris+, 2004)J/MNRAS/383/330 : Chandra Small Magellanic Cloud Wing Survey (McGowan+, 2008)J/ApJ/697/1695 : The Chandra survey of the SMC "Bar". II. (Antoniou+, 2009)J/MNRAS/397/1177 : Swift-XRT observations of GRBs (Evans+, 2009)J/ApJS/194/22 : Magellanic QSOs Survey: QSOs behind SMC (Kozlowski+, 2011)J/ApJ/746/27 : MQS. II. AGNs behind LMC (Kozlowski+, 2012)J/A+A/545/A128 : SMC XMM-Newton images (Haberl+, 2012)J/A+A/549/A29 : Quasars behind the Magellanic system (Cioni+, 2013)J/ApJ/775/92 : MQS III: AGNs behind LMC and SMC (Kozlowski+, 2013)J/ApJS/209/14 : The Swift/BAT hard X-ray transient monitor (Krimm+, 2013)J/A+A/558/A3 : XMM-Newton point-source catalogue of the SMC (Sturm+, 2013)J/ApJS/221/12 : AGNs in the MIR using AllWISE data (Secrest+, 2015)J/A+A/586/A81 : High-mass X-ray binaries in the SMC (Haberl+, 2016)J/A+A/622/A29 : SMC AGN in XMM-Newton (Maitra+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/868/47https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/868/47http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/868/47https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/868/47https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/868/47http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/868/47GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/868/47/table2 (*Catalog of X-ray sources detected in the first year of S-CUBED observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/868/47/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/868/47/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/868/47/table2?GETtext/xml+votable180.050000true19.2715833-73.44327780.005555555555555556Swift5/8323 8326 8329 6/32955 33287 33291 33297 33298 33299 33300 33313 33315 33325 33328 33329 33330https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/868/47?format=asciiX-raydefaultJ/ApJ/868/47/table2*Catalog of X-ray sources detected in the first year of S-CUBED observationsSeq[1/817] Internal numbermeta.idinte_Gamma[0.03/21]? Gamma negative uncertaintystat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint1SCUBEDX1SCUBEDX name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharRAJ2000[0/1] Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000[71/74] Degree of declination (J2000)pos.eq.dec;meta.mainePos[2/16] Positional uncertaintyarcsecstat.errorfloatf_ePos[*] *: Flag on ePos (1)meta.codecharDet[0/100] Percentage of detection in all observations%stat.likelihood;obsfloatF0.5-10[1.4e-14/6.3e-10] 0.5-10keV flux; in units of erg/s/cm^2^mW.m**-2phot.flux;em.X-raydoublee_F0.5-10[0/1e-11] F0.5-10 negative uncertaintymW.m**-2stat.errordoubleE_F0.5-10[0/1e-11] F0.5-10 positive uncertaintymW.m**-2stat.error;stat.maxdoubleGamma[-0.03/18]? Fitted photon index, {Gamma}, assuming a standard SMC absorptionmeta.code;spect.index;meta.modelledfloatnullableE_Gamma[0.05/83]? Gamma positive uncertaintystat.error;stat.maxfloatnullableXIDOther name for known X-ray sourcesmeta.id.crosscharKnown?Previously identified X-ray emitter: K=known (105 occurrences) or U=unknownmeta.codecharTypeSource type for known X-ray sources (2)src.classcharRefReference(s) (3)meta.ref;pos.framecharDateUT date of the first detection for the sources of interest; column added by CDS from Table 5 (4)time.epochnullable