A Young White Dwarf with an Infrared Excess

dc.creatorXu, S.
dc.creatorJura, M.
dc.creatorPantoja, B.
dc.creatorKlein, B.
dc.creatorZuckerman, B.
dc.creatorSu, K. Y. L.
dc.creatorMeng, H. Y. A.
dc.date.accessioned2015-09-08T18:57:28Z
dc.date.available2015-09-08T18:57:28Z
dc.date.created2015-09-08T18:57:28Z
dc.date.issued2015
dc.identifierAstrophysical Journal Letters. Vol. 806 No. 1 Jun 2015
dc.identifierDOI: 10.1088/2041-8205/806/1/L5
dc.identifierhttps://repositorio.uchile.cl/handle/2250/133497
dc.description.abstractUsing observations of Spitzer/IRAC, we report the serendipitous discovery of excess infrared emission from a single white dwarf PG 0010+280. At a temperature of 27,220 K and a cooling age of 16 Myr, it is the hottest and youngest white dwarf to display an excess at 3-8 mu m. The infrared excess can be fit by either an opaque dust disk within the tidal radius of the white dwarf or a 1300 K blackbody, possibly from an irradiated substellar object or a re-heated giant planet. PG 0010+280 has two unique properties that are different from white dwarfs with a dust disk: (i) relatively low emission at 8 mu m and (ii) non-detection of heavy elements in its atmosphere from high-resolution spectroscopic observations with Keck/HIRES. The origin of the infrared excess remains unclear.
dc.languageen
dc.publisherIOP Publishing
dc.rightshttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Chile
dc.subjectCircumstellar matter
dc.subjectMinor planets
dc.subjectAsteroids: general
dc.subjectWhite dwarfs
dc.titleA Young White Dwarf with an Infrared Excess
dc.typeArtículo de revista


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