J/other/Nat/493.ivo://CDS.VizieR/J/other/Nat/493.378CDSMuzerolle J.Furlan E.Flaherty K.Balog Z.Gutermuth R.2017-06-27T06:38:25Z2013-03-28T07:20:31ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryPeriodic increases in luminosity arising from variable accretion rates have been predicted for some pre-main-sequence close binary stars as they grow from circumbinary disks. The phenomenon is known as pulsed accretion and can affect the orbital evolution and mass distribution of young binaries, as well as the potential for planet formation. Accretion variability is a common feature of young stars, with a large range of amplitudes and timescales as measured from multi-epoch observations at optical and infrared wavelengths. Periodic variations consistent with pulsed accretion have been seen in only a few young binaries via optical accretion tracers albeit intermittently with accretion luminosity variations ranging from zero to 50 per cent from orbit to orbit. Here we report that the infrared luminosity of a young protostar (of age about 10^5^ years) increases by a factor of ten in roughly one week every 25.34 days. We attribute this to pulsed accretion associated with an unseen binary companion. The strength and regularity of this accretion signal is surprising; it may be related to the very young age of the system, which is a factor of ten younger than the other pulsed accretors previously studied.2013Natur.493..378Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/Nat/493.378CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/Nat/493.378https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/Nat/493.378http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/Nat/493.378https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/Nat/493.378https://vizier.iucaa.in/viz-bin/votable?-source=J/other/Nat/493.378http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/Nat/493.378GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.837779945223663e-21 5.517906024225661e-20InfrareddefaultJ/other/Nat/493.378/tables2Spitzer IRAC photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian datedtime.epochdouble[3.6]Spitzer IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umfloate_[3.6]rms uncertainty on [3.6]magstat.errorfloat[4.5]Spitzer IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umfloate_[4.5]rms uncertainty on [4.5]magstat.errorfloat[5.8]? Spitzer IRAC 5.8um magnitude (1)magphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? rms uncertainty on [5.8]magstat.errorfloatnullable[8.0]? Spitzer IRAC 8.0um magnitude (1)magphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? rms uncertainty on [8.0]magstat.errorfloatnullableJ/other/Nat/493.378/tables3Spitzer MIPS photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMJDModified Julian datedtime.epochdouble[24]Spitzer MIPS 24um magnitudemagphot.flux.density;em.IR.15-30umfloate_[24]rms uncertainty on [24]magstat.errorfloat[70]? Spitzer MIPS 70um magnitude (1)magphot.flux.density;em.IR.30-60umfloatnullablee_[70]? rms uncertainty on [70]magstat.errorfloatnullable