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ASPITZER SPACE TELESCOPESTUDY OF THE DEBRIS DISKS AROUND FOUR SDSS WHITE DWARFS
2012
Astrophysical Journal
We present Spitzer Space Telescope data of four isolated white dwarfs that were previously known to harbor circumstellar gaseous disks. IRAC photometry shows a significant infrared excess in all of the systems, SDSS0738+1835, SDSS0845+2257, SDSS1043+0855 and SDSS1617+1620, indicative of a dusty extension to those disks. The 4.5-micron excesses seen in SDSS0738, SDSS0845, and SDSS1617 are 7.5, 5.7 and 4.5 times the white dwarf contribution, respectively. In contrast, in SDSS1043, the measured
doi:10.1088/0004-637x/750/1/86
fatcat:oauvmmqpejhjbmlnsxatbvguge