J/ApJ/918/71ivo://CDS.VizieR/J/ApJ/918/71doi:10.26093/cds/vizier.19180071CDSRieke G.H.Su K.Y.L.Melis C.Gaspar A.2023-05-26T08:44:17Z2023-02-27T14:24:11ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectsinfrared-photometryvariable-starsV488 Persei is the most extreme debris disk known in terms of the fraction of the stellar luminosity it intercepts and reradiates. The infrared output of its disk is extremely variable, similar in this respect to the most variable disk known previously, that around ID8 in NGC 2547. We show that the variations are likely to be due to collisions of large planetesimals (>~100km in diameter) in a belt being stirred gravitationally by a planetary or low-mass-brown-dwarf member of a planetary system around the star. The dust being produced by the resulting collisions is falling into the star due to drag by the stellar wind. The indicated planetesimal destruction rate is so high that it is unlikely that the current level of activity can persist for much longer than ~1000-10000yr and it may signal a major realignment of the configuration of the planetary system.2021ApJ...918...71Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/918/71CatalogResearchIsServedByTAP VizieR generic servicerelated-toV/80 : Low-Mass Stars' Membership in Alpha Persei Cluster (Prosser 1992)J/A+A/411/559 : Effective temperature for 181 F-K dwarfs (Kovtyukh+, 2003)J/AJ/132/161 : NStars project: The southern sample. I. (Gray+, 2006)J/AJ/131/2967 : {alpha} Persei open cluster members (Makarov+, 2006)J/ApJ/670/516 : NGC 2547 4.5-8um photometry (Gorlova+, 2007)J/A+A/488/409 : Radial velocities of {alpha} Per stars (Mermilliod+, 2008)J/ApJ/698/1989 : Spitzer survey of NGC 2451 (Balog+, 2009)J/ApJ/745/147 : Binaries among debris disk stars (Rodriguez+, 2012)J/ApJ/752/58 : {alpha} Per cluster members (Zuckerman+, 2012)J/ApJ/768/25 : Spitzer & Herschel obs. of debris disks (Gaspar+, 2013)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)J/A+A/575/A18 : Revising the ages of planet-hosting stars (Bonfanti+, 2015)J/ApJ/805/77 : Spitzer 3.6 and 4.5um monitoring of 5 stars (Meng+, 2015)J/MNRAS/449/3160 : Stellar multiplicity and debris discs (Rodriguez+, 2015)J/ApJ/823/108 : A dust model for bet Pic from 0.58-870um (Ballering+, 2016)J/ApJ/836/34 : 24um obs. in clusters & membership of NGC2244 (Meng+, 2017)J/A+A/618/A93 : Gaia DR2 open clusters in the MW (Cantat-Gaudin+, 2018)J/AJ/156/241 : Variable stars measured by ATLAS (Heinze+, 2018)J/AJ/158/93 : Regression of stellar Teff in GaiaDR2 (Bai+, 2019)J/AJ/157/202 : IRAC fluxes of the ID8 and P1121 systems (Su+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/918/71https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/918/71http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/918/71https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/918/71https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/918/71http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/918/71GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap3.9193497546148093e-20 6.185923063528282e-20InfrareddefaultJ/ApJ/918/71/table2Spitzer IRAC 3.6um and 4.5um IRAC wave bands (IRAC1 and IRAC2) photometry of V488 PerrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAORSpitzer AOR keymeta.id;obsintBMJD1[54004.27/58874.65] Barycentric modified Julian Date of F3.6 observationdtime.epochdoubleF3.6[27.65/86.9] Spitzer/IRAC 3.6um band flux densitymJyphot.mag;em.IR.3-4umfloate_F3.6[0.1/0.63] Uncertainty in F3.6mJystat.errorfloatBMJD2[54004.26/58874.65] Barycentric modified Julian Date of F4.5 observationdtime.epochdoubleF4.5[26.34/96.21] Spitzer/IRAC 4.5um band flux densitymJyphot.mag;em.IR.4-8umfloate_F4.5[0.048/4.2] Uncertainty in F4.5mJystat.errorfloat