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Rejected Candidates


Table 4: Rejected Candidates
ID RA Dec Slope $\log_{10} { L_{mIR} \over L_\odot }$ $f$ Spectral Energy Distribution [ $\log_{10} (\lambda L_\lambda/$L$_\odot)$]
($a$) [3.6] [4.5] [5.8] [8.0] [24] [70] [160]
M81-1 149.21474 69.12843 0.56 5.50 0.55 5.46 5.55 5.61 5.66 5.46 $<$5.28 $<$5.81
M81-2 148.91331 69.29649 0.22 5.06 0.54 5.21 5.15 4.95 5.33 5.13 $<$5.53 $<$5.97
M81-3 149.25626 68.91674 0.66 5.43 0.53 5.37 5.45 5.57 5.59 5.58 $<$5.50 $<$5.60
M81-4 149.15222 69.00780 0.61 5.08 0.53 5.08 5.09 5.19 5.28 5.30 $<$5.63 $<$6.58
M81-8 149.17365 68.80576 1.14 5.42 0.47 5.30 5.32 5.57 5.66 5.60 $<$5.51 $<$5.60
M81-9 148.85034 69.24746 1.76 5.45 0.40 5.18 5.38 5.45 5.83 5.52 $<$6.46 $<$6.27
M81-13 148.99657 69.26839 1.74 5.03 0.31 4.90 4.85 4.78 5.54 5.10 $<$6.14 $<$5.99
N247-2 11.90806 $-$20.51950 1.35 5.10 0.36 5.13 4.85 5.01 5.55 5.46 $<$6.89 ...
N7793-2 359.47302 $-$32.47820 0.62 5.37 0.51 5.39 5.33 5.49 5.57 5.84 $<$5.99 $<$6.00
N7793-5 359.34467 $-$32.62253 0.76 5.15 0.42 5.33 4.96 5.05 5.54 5.24 $<$6.13 $<$6.47
N7793-7 359.46878 $-$32.63801 1.17 5.04 0.37 5.09 4.87 4.87 5.49 5.59 $<$6.08 $<$6.80

Of the 11 rejected candidates, six are AGNs or galaxies with a redshift measurement. Four have been photometrically classified as galaxies by the SDSS survey (Abazajian et al.2009) and visual inspections of the SDSS images find diffuse extended sources consistent with this classification. One of these sources is also 04 away from a radio and X-ray source and is likely a low redshift AGN. One candidate is a well-resolved galaxy in HST images. The SEDs of the rejected candidates are shown in Figure8 and their luminosities, SED slope, and $f$ are listed in Table4. In detail, we find that:

While the astrometric matches are sometimes imperfect, we are dealing with objects with such low surface densities that a mismatch is extraordinarily unlikely. Essentially, this search recapitulates aspects of the Koz\lowski et al. (2010) search for quasars behind the Magellanic clouds as red mid-IR sources following the extragalactic mid-IR search criteria of Stern et al. (2005). The red mid-IR colors created by the power-law SEDs of quasars mimic aspects of the red SEDs of dusty stars.

next up previous
Next: Remaining Candidates Up: Inventory of Candidates Previous: Inventory of Candidates
Rubab Khan 2012-10-28