A DUSTY COMPONENT TO THE GASEOUS DEBRIS DISK AROUND THE WHITE DWARF SDSS J1228+1040

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dc.contributor.authorBrinkworth, C. S.
dc.contributor.authorGansicke, B. T.
dc.contributor.authorMarsh, T. R.
dc.contributor.authorHoard, D. W.
dc.contributor.authorTappert, C.
dc.date.accessioned2025-01-21T00:09:00Z
dc.date.available2025-01-21T00:09:00Z
dc.date.issued2009
dc.description.abstractWe present Infrared Spectrometer And Array Camera (ISAAC) spectroscopy and ISAAC, UKIDSS, and Spitzer Space Telescope broadband photometry of SDSS J1228+1040-a white dwarf for which evidence of a gaseous metal-rich circumstellar disk has previously been found from optical emission lines. The data show a clear excess in the near- and mid-infrared (IR), providing compelling evidence for the presence of dust in addition to the previously identified gaseous debris disk around the star. The IR excess can be modeled in terms of an optically thick but geometrically thin disk. We find that the inner disk temperatures must be relatively high (similar to 1700 K) in order to fit the spectral energy distribution in the near- IR. These data provide the first evidence for the coexistence of both gas and dust in a disk around a white dwarf, and show that their presence is possible even around moderately hot (similar to 22,000 K) stars.
dc.fuente.origenWOS
dc.identifier.doi10.1088/0004-637X/696/2/1402
dc.identifier.issn0004-637X
dc.identifier.urihttps://doi.org/10.1088/0004-637X/696/2/1402
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95691
dc.identifier.wosidWOS:000265762700026
dc.issue.numero2
dc.language.isoen
dc.pagina.final1406
dc.pagina.inicio1402
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectcircumstellar matter
dc.subjectinfrared: stars
dc.subjectstars: individual (SDSS J1228+1040)
dc.subjectwhite dwarfs
dc.titleA DUSTY COMPONENT TO THE GASEOUS DEBRIS DISK AROUND THE WHITE DWARF SDSS J1228+1040
dc.typeartículo
dc.volumen696
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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