Observed Energy Distribution: Q1426+015 log nu0 log nu1 log nu2 log nuFnu Date Aper Filter Instrument Ref (Hz) (Hz) (Hz) (Jy Hz) (") or or Detector Telescope 9.70 9.70 9.70 6.67( + 0.03 - 0.03 ) 1983 Nov 18.0 - VLA AJ098,1195 11.36 11.36 11.36 < 9.01 1988 - - IRAM AAp219,087 12.48 12.40 12.56 < 11.89 1983 300.0 IRAS4 IRAS Table11 12.70 12.57 12.87 12.13( + 0.06 - 0.07 ) 1983 300.0 IRAS3 IRAS Table11 13.08 13.00 13.20 12.44( + 0.09 - 0.11 ) 1983 300.0 IRAS2 IRAS Table11 13.17 13.07 13.26 12.45( + 0.14 - 0.22 ) 1984 Mar 5.0 Q UKIRT Table10 13.17 13.07 13.26 12.45( + 0.14 - 0.22 ) 1984 Mar 5.0 Q UKIRT ApJ315,074 13.40 13.30 13.55 12.54( + 0.08 - 0.10 ) 1983 300.0 IRAS1 IRAS Table11 13.47 13.36 13.56 12.34( + 0.06 - 0.08 ) 1984 Mar 5.0 N UKIRT Table10 13.47 13.36 13.56 12.37( + 0.05 - 0.06 ) 1985 Apr 2 4.0 N IRTF Table10 13.47 13.36 13.56 12.41( + 0.08 - 0.08 ) 1981 Jul 24 5.0 N Hale ApJS63,615 13.47 13.36 13.56 12.34( + 0.06 - 0.08 ) 1984 Mar 5.0 N UKIRT ApJ315,074 13.47 13.36 13.56 12.37( + 0.05 - 0.06 ) 1985 Apr 2 4.0 N IRTF ApJ315,074 13.90 13.86 13.94 12.23( + 0.04 - 0.04 ) 1983 Feb 6 6.0 L' IRTF Table9 13.90 13.86 13.94 12.44( + 0.02 - 0.02 ) 1988 Apr 25 6.0 L' IRTF Table9 13.90 13.86 13.94 12.29( + 0.04 - 0.04 ) 1981 Jul 24 5.0 L' Hale ApJS63,615 13.93 13.88 14.00 12.54( + 0.02 - 0.02 ) 1985 May 5 5.0 L MMT Table9 13.93 13.88 14.00 12.35( + 0.03 - 0.04 ) 1983 Feb 7 6.0 L IRTF ApJ315,074 14.13 14.11 14.19 12.37( + 0.02 - 0.02 ) 1983 Feb 6 6.0 K IRTF Table9 14.13 14.11 14.19 12.50( + 0.02 - 0.02 ) 1985 May 5 5.0 K MMT Table9 14.13 14.11 14.19 12.51( + 0.03 - 0.03 ) 1986 Feb 27 9.0 K MMT Table9 14.13 14.11 14.19 12.35( + 0.02 - 0.02 ) 1988 Apr 25 6.0 K IRTF Table9 14.13 14.11 14.19 12.32( + 0.00 - 0.00 ) 1985 Apr 12 12.0 K UoA1.55m/InSb Table9 14.13 14.11 14.19 12.39( + 0.03 - 0.03 ) 1980 Jun 1 5.0 K Hale ApJS63,615 14.13 14.11 14.19 12.35( + 0.03 - 0.03 ) 1981 Jul 24 5.0 K Hale ApJS63,615 14.13 14.11 14.19 12.37( + 0.02 - 0.03 ) 1983 Feb 7 6.0 K IRTF ApJ315,074 14.26 14.23 14.31 12.28( + 0.02 - 0.02 ) 1983 Feb 6 6.0 H IRTF Table9 14.26 14.23 14.31 12.37( + 0.02 - 0.02 ) 1985 May 5 5.0 H MMT Table9 14.26 14.23 14.31 12.41( + 0.03 - 0.03 ) 1986 Feb 27 9.0 H MMT Table9 14.26 14.23 14.31 12.25( + 0.02 - 0.02 ) 1988 Apr 25 6.0 H IRTF Table9 14.26 14.23 14.31 12.40( + 0.00 - 0.00 ) 1985 Apr 12 12.0 H UoA1.55m/InSb Table9 14.26 14.23 14.31 12.26( + 0.03 - 0.03 ) 1980 Jun 1 5.0 H Hale ApJS63,615 14.26 14.23 14.31 12.16( + 0.04 - 0.04 ) 1981 Jul 24 5.0 H Hale ApJS63,615 14.26 14.23 14.31 12.29( + 0.03 - 0.03 ) 1983 Feb 7 6.0 H IRTF ApJ315,074 14.38 14.35 14.45 12.28( + 0.02 - 0.02 ) 1983 Feb 6 6.0 J IRTF Table9 14.38 14.35 14.45 12.35( + 0.02 - 0.02 ) 1985 May 5 5.0 J MMT Table9 14.38 14.35 14.45 12.36( + 0.03 - 0.03 ) 1986 Feb 27 9.0 J MMT Table9 14.38 14.35 14.45 12.23( + 0.02 - 0.02 ) 1988 Apr 25 6.0 J IRTF Table9 14.38 14.35 14.45 12.40( + 0.00 - 0.00 ) 1985 Apr 12 12.0 J UoA1.55m/InSb Table9 14.38 14.35 14.45 12.22( + 0.04 - 0.04 ) 1980 Jun 1 5.0 J Hale ApJS63,615 14.38 14.35 14.45 12.11( + 0.03 - 0.03 ) 1981 Jul 24 5.0 J Hale ApJS63,615 14.38 14.35 14.45 12.30( + 0.03 - 0.03 ) 1983 Feb 7 6.0 J IRTF ApJ315,074 14.52 14.46 14.58 12.43( + 0.00 - 0.00 ) 1985 Apr 12 12.0 I MtLemmon1.5m/PM Table6B 14.55 14.54 14.55 12.16( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.56 14.55 14.57 12.33( + 0.00 - 0.00 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.56 14.55 14.57 12.19( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.57 14.57 14.58 12.32( + 0.00 - 0.00 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.57 14.57 14.58 12.20( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.58 14.58 14.59 12.30( + 0.01 - 0.01 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.58 14.58 14.59 12.21( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.60 14.59 14.60 12.34( + 0.02 - 0.02 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.60 14.59 14.60 12.26( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.60 14.60 14.61 12.27( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.63 14.57 14.70 12.51( + 0.00 - 0.00 ) 1985 Apr 12 12.0 R MtLemmon1.5m/PM Table6B 14.65 14.65 14.66 12.32( + 0.01 - 0.01 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.65 14.65 14.66 12.25( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.66 14.66 14.67 12.28( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.68 14.67 14.69 12.24( + 0.05 - 0.05 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.68 14.67 14.69 12.29( + 0.03 - 0.03 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.69 14.69 14.70 12.28( + 0.02 - 0.02 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.69 14.69 14.70 12.18( + 0.02 - 0.02 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.69 14.69 14.70 12.25( + 0.00 - 0.00 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.71 14.70 14.72 12.26( + 0.00 - 0.00 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.71 14.70 14.72 12.17( + 0.02 - 0.02 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.71 14.70 14.72 12.27( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.73 14.72 14.73 12.21( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.73 14.72 14.73 12.31( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.74 14.70 14.78 12.51( + 0.00 - 0.00 ) 1985 Apr 12 12.0 V MtLemmon1.5m/PM Table6B 14.78 14.77 14.78 12.28( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.78 14.77 14.78 12.36( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.79 14.78 14.79 12.37( + 0.00 - 0.00 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.79 14.78 14.79 12.29( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.79 14.78 14.79 12.38( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.83 14.78 14.89 12.55( + 0.00 - 0.00 ) 1985 Apr 12 12.0 B MtLemmon1.5m/PM Table6B 14.86 14.86 14.87 12.44( + 0.00 - 0.00 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.86 14.86 14.87 12.35( + 0.02 - 0.02 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.88 14.88 14.89 12.40( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.92 14.89 14.96 12.67( + 0.00 - 0.00 ) 1985 Apr 12 12.0 U MtLemmon1.5m/PM Table6B 14.93 14.92 14.94 12.54( + 0.01 - 0.01 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.93 14.92 14.94 12.47( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.94 14.94 14.95 12.56( + 0.00 - 0.00 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.94 14.94 14.95 12.47( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.96 14.95 14.96 12.53( + 0.02 - 0.02 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.96 14.95 14.96 12.45( + 0.03 - 0.03 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 14.97 14.96 14.98 12.70( + 0.03 - 0.03 ) 1983 May 28 15.0 - LWR16020 RDAF 14.97 14.96 14.98 12.93( + 0.05 - 0.06 ) 1983 Aug 17 15.0 - LWR16611 RDAF 14.97 14.96 14.98 12.77( + 0.06 - 0.08 ) 1983 May 25 15.0 - LWR16015 RDAF 14.97 14.96 14.98 12.89( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 14.97 14.96 14.98 12.55( + 0.02 - 0.02 ) 1980 Jul 19 15.0 AB Hale ApJS63,615 14.97 14.96 14.98 12.48( + 0.01 - 0.01 ) 1988 Jun 10 5.0 - MMT/Blue Elvis,etal.1990 15.01 15.01 15.02 12.70( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.01 15.01 15.02 12.77( + 0.03 - 0.03 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.01 15.01 15.02 12.71( + 0.03 - 0.04 ) 1983 May 25 15.0 - LWR16015 RDAF 15.01 15.01 15.02 12.79( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.03 15.02 15.03 12.70( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.03 15.02 15.03 12.78( + 0.02 - 0.03 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.03 15.02 15.03 12.71( + 0.03 - 0.03 ) 1983 May 25 15.0 - LWR16015 RDAF 15.03 15.02 15.03 12.77( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.04 15.03 15.05 12.71( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.04 15.03 15.05 12.78( + 0.03 - 0.03 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.04 15.03 15.05 12.73( + 0.03 - 0.03 ) 1983 May 25 15.0 - LWR16015 RDAF 15.04 15.03 15.05 12.80( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.06 15.05 15.07 12.69( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.06 15.05 15.07 12.75( + 0.03 - 0.03 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.06 15.05 15.07 12.73( + 0.03 - 0.03 ) 1983 May 25 15.0 - LWR16015 RDAF 15.06 15.05 15.07 12.81( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.08 15.07 15.09 12.68( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.08 15.07 15.09 12.66( + 0.03 - 0.03 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.08 15.07 15.09 12.76( + 0.03 - 0.03 ) 1983 May 25 15.0 - LWR16015 RDAF 15.08 15.07 15.09 12.80( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.10 15.09 15.11 12.60( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.10 15.09 15.11 12.58( + 0.03 - 0.04 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.10 15.09 15.11 12.70( + 0.03 - 0.04 ) 1983 May 25 15.0 - LWR16015 RDAF 15.10 15.09 15.11 12.78( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.12 15.11 15.13 12.66( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.12 15.11 15.13 12.75( + 0.03 - 0.03 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.12 15.11 15.13 12.63( + 0.04 - 0.04 ) 1983 May 25 15.0 - LWR16015 RDAF 15.12 15.11 15.13 12.80( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.14 15.13 15.15 12.61( + 0.03 - 0.03 ) 1983 May 28 15.0 - LWR16020 RDAF 15.14 15.13 15.15 12.60( + 0.04 - 0.04 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.14 15.13 15.15 12.71( + 0.04 - 0.04 ) 1983 May 25 15.0 - LWR16015 RDAF 15.14 15.13 15.15 12.81( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.18 15.17 15.19 12.64( + 0.02 - 0.02 ) 1983 May 28 15.0 - LWR16020 RDAF 15.18 15.17 15.19 12.77( + 0.03 - 0.04 ) 1983 Aug 17 15.0 - LWR16611 RDAF 15.18 15.17 15.19 12.60( + 0.05 - 0.05 ) 1983 May 25 15.0 - LWR16015 RDAF 15.18 15.17 15.19 12.84( + 0.02 - 0.02 ) 1985 Mar 2 15.0 - LWP05446 RDAF 15.19 15.19 15.20 12.63( + 0.02 - 0.02 ) 1983 May 26 15.0 - SWP20076 RDAF 15.19 15.19 15.20 12.78( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.19 15.19 15.20 13.01( + 0.03 - 0.03 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.19 15.19 15.20 12.84( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.20 15.20 15.21 12.70( + 0.02 - 0.02 ) 1983 May 26 15.0 - SWP20076 RDAF 15.20 15.20 15.21 12.81( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.20 15.20 15.21 12.96( + 0.03 - 0.03 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.20 15.20 15.21 12.86( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.22 15.21 15.22 12.75( + 0.02 - 0.02 ) 1983 May 26 15.0 - SWP20076 RDAF 15.22 15.21 15.22 12.86( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.22 15.21 15.22 12.79( + 0.04 - 0.04 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.22 15.21 15.22 12.89( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.23 15.22 15.24 12.79( + 0.02 - 0.02 ) 1983 May 26 15.0 - SWP20076 RDAF 15.23 15.22 15.24 12.91( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.23 15.22 15.24 12.94( + 0.04 - 0.04 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.23 15.22 15.24 12.93( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.27 15.27 15.28 12.67( + 0.03 - 0.03 ) 1983 May 26 15.0 - SWP20076 RDAF 15.27 15.27 15.28 12.83( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.27 15.27 15.28 12.81( + 0.06 - 0.07 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.27 15.27 15.28 12.93( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.31 15.30 15.32 12.70( + 0.03 - 0.03 ) 1983 May 26 15.0 - SWP20076 RDAF 15.31 15.30 15.32 12.85( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.31 15.30 15.32 12.97( + 0.05 - 0.06 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.31 15.30 15.32 12.93( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.33 15.32 15.34 12.68( + 0.03 - 0.03 ) 1983 May 26 15.0 - SWP20076 RDAF 15.33 15.32 15.34 12.86( + 0.02 - 0.02 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.33 15.32 15.34 12.98( + 0.04 - 0.05 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.33 15.32 15.34 12.94( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 15.39 15.38 15.40 12.75( + 0.03 - 0.03 ) 1983 May 26 15.0 - SWP20076 RDAF 15.39 15.38 15.40 12.85( + 0.02 - 0.03 ) 1983 Aug 17 15.0 - SWP20708 RDAF 15.39 15.38 15.40 13.16( + 0.06 - 0.07 ) 1983 Feb 6 15.0 - SWP19214 RDAF 15.39 15.38 15.40 12.97( + 0.02 - 0.02 ) 1985 Mar 1 15.0 - SWP25338 RDAF 16.68 16.56 16.86 < 12.39 1980 Aug 3 360.0 XS IPC5348 AAp253,035 17.38 16.59 18.38 11.85( + 0.03 - 0.03 ) 1980 Aug 3 360.0 IPC/MPC IPC5348 AAp253,035 17.99 17.68 18.38 11.78( + 0.00 - 0.00 ) 1985 Jul 6 - ME EXOSAT ApJ384,062