| タイトル | Wise Detections of Known QSOS at Redshifts Greater Than Six |
| 本文（外部サイト） | http://hdl.handle.net/2060/20140008679 |
| 著者（英） | Jarrett, Tom; Tsai, Chao-Wei; Wu, Jingwen; Petty, Sara; Wright, Edward L.; Stern, Daniel; Benford, Dominic; Cutri, Roc; Bridge, Carrie; Blain, Andrew W.; Eisenhardt, Peter; Assef, Roberto |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2013-10-08 |
| 言語 | eng |
| 内容記述 | We present WISE All-Sky mid-infrared (IR) survey detections of 55 % (17/31) of the known QSOs at z greater than 6 from a range of surveys: the SDSS, the CFHT-LS, FIRST, Spitzer and UK1DSS. The WISE catalog thus provides a substantial increase in tiie quantity of IR data available for these sources: 17 are detected in the WISE Wl (3.4 micrometer) band, 16 in W2 (4.6 micrometers), 3 in W3 (12 micrometers) and 0 in W4 (22micrometers). This is particularly important with Spitzer in its warm-mission phase and no faint follow-up capability at wavelengths longwards of 5 micrometers until the launch of JWST. WISE thus provides a useful tool for understanding QSOs found in forthcoming large-area optical/IR sky surveys, using PanSTARRS, SkyMapper, VISTA, DES and LSST. The rest-UV properties of the WISE-detected and the WISE-non-detected samples differ: the detections have brighter i/z-band magnitudes and redder rest-UV colors. This suggests thai a more aggressive hunt for very-high-redshift QSOs, by combining WISE Wl and W2 data with red observed optical colors could be effective at least, for a subset of dusty candidate QSOs. Stacking the WISE images of the WISE-non-detected QSOs indicates that they are on average significantly fainter than the WISE-detccted examples, and are thus not narrowly missing detection in the WISE catalog. The WISE-catalog detection of three of our sample in the W3 band indicates that their mid-ID flux can be detected individually, although there is no stacked W3 detection of sources detected in Wl but not. W3. Stacking analyses of WISE data for large AGN samples will be a useful tool, and high-redshifl. QSOs of all types will be easy targets for JWST. |
| NASA分類 | Astrophysics; Astronomy |
| レポートNO | GSFC-E-DAA-TN14706 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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