The WIRED Survey II: Infrared Excesses in the SDSS DR7 White Dwarf Catalog
J. H. Debes, D. W. Hoard, S. Wachter, D. T. Leisawitz, M. Cohen

TL;DR
This paper presents a large survey cross-matching SDSS DR7 white dwarf data with infrared surveys, identifying candidates for planetary debris, brown dwarfs, and binary systems through spectral energy distribution modeling.
Contribution
It introduces a comprehensive infrared survey of SDSS DR7 white dwarfs, identifying and classifying potential debris disks and substellar companions using multi-survey data.
Findings
344 WDs with only photospheric emission detected
1020 candidate WD+M dwarf binaries identified
52 candidate WD+dust disk systems found
Abstract
With the launch of the {\em Wide-field Infrared Survey Explorer} ({\em WISE}), a new era of detecting planetary debris and brown dwarfs around white dwarfs (WDs) has begun with the {\em WISE} InfraRed Excesses around Degenerates (WIRED) Survey. The WIRED Survey is sensitive to substellar objects and dusty debris around WDs out to distances exceeding 100 pc, well beyond the completeness level of local WDs. In this paper, we present a cross-correlation of the preliminary Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7) WD Catalog between the {\em WISE}, Two-Micron All Sky Survey (2MASS), UKIRT Infrared Deep Sky Survey (UKIDSS), and SDSS DR7 photometric catalogs. From input targets, there are {\em WISE} detections comprising 344 "naked" WDs (detection of the WD photosphere only), 1020 candidate WD+M dwarf binaries, 42 candidate WD+brown dwarf (BD) systems, 52 candidate…
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