J/ApJ/743/85ivo://CDS.VizieR/J/ApJ/743/85doi:10.26093/cds/vizier.17430085CDSBeichman C.A.Lisse C.M.Tanner A.M.Bryden G.Akeson R.L.,Ciardi D.R.Boden A.F.Dodson-Robinson S.E.Salyk C.Wyatt M.C.2017-06-02T08:37:39Z2013-06-13T14:47:13ZCDS support team

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

cds-question@unistra.frmultiple-starsinfrared-astronomyspectroscopyThe main-sequence solar-type star HD 69830 has an unusually large amount of dusty debris orbiting close to three planets found via the radial velocity technique. In order to explore the dynamical interaction between the dust and planets, we have performed multi-epoch photometry and spectroscopy of the system over several orbits of the outer dust. We find no evidence for changes in either the dust amount or its composition, with upper limits of 5%-7% (1{sigma} per spectral element) on the variability of the dust spectrum over 1 year, 3.3% (1{sigma}) on the broadband disk emission over 4 years, and 33% (1{sigma}) on the broadband disk emission over 24 years. Detailed modeling of the spectrum of the emitting dust indicates that the dust is located outside of the orbits of the three planets and has a composition similar to main-belt, C-type asteroids in our solar system. Additionally, we find no evidence for a wide variety of gas species associated with the dust. Our new higher signal-to-noise spectra do not confirm our previously claimed detection of H_2_O ice leading to a firm conclusion that the debris can be associated with the break-up of one or more C-type asteroids formed in the dry, inner regions of the protoplanetary disk of the HD 69830 system. The modeling of the spectral energy distribution and high spatial resolution observations in the mid-infrared are consistent with a ~1 AU location for the emitting material.2011ApJ...743...85Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/743/85CatalogResearchIsServedByTAP VizieR generic servicerelated-toI/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/A+A/521/A12 : RVs of nearby late-type stars (Maldonado+, 2010)J/ApJ/705/1226 : Planet-bearing stars in Spitzer (Bryden+, 2009)J/ApJ/705/89 : IRS spectra of solar-type stars (Lawler+, 2009)J/ApJ/700/L73 : Photospheric fluxes at 24 and 70{mu}m (Kospal+, 2009)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/ApJ/636/1098 : Debris disks around solar-type stars (Bryden+, 2006)J/ApJ/620/1010 : Spitzer 24{mu}m photometry of A dwarfs (Rieke+, 2005)J/ApJS/151/387 : NIR spectral library of late-type stars (Ivanov+, 2004)J/A+AS/121/139 : UMIST database. 1995 (Millar+, 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/743/85https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/743/85http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/743/85https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/743/85https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/743/85http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/743/85GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/ApJ/743/85/table4Spitzer/IRS low resolution spectrumFracFractional excessphot.color.excessfloate_FracUncertainty in Fracstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[7.5/35] Wavelength {lambda} (microns)umem.wlfloatFlux[101/1560] Observed flux densitymJyphot.fluxfloate_Flux[0.7/55] Uncertainty in Flux (1)mJystat.error;phot.fluxfloatPhotFlux density from photospheremJyphot.fluxfloatExc[-0.1/123] Flux density from excessmJyphot.fluxfloate_Exc[0.7/55] Uncertainty in ExcmJystat.errorfloat