Observed Energy Distribution: Q1211+143 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 6.77( + 0.02 - 0.02 ) 1983 Nov 18.0 - VLA AJ098,1195 11.36 11.36 11.36 < 8.82 1988 - - IRAM AAp219,087 12.48 12.40 12.56 12.32( + 0.07 - 0.08 ) 1983 300.0 IRAS4 IRAS Table11 12.70 12.57 12.87 12.20( + 0.07 - 0.09 ) 1983 300.0 IRAS3 IRAS Table11 13.08 13.00 13.20 12.54( + 0.11 - 0.14 ) 1983 300.0 IRAS2 IRAS Table11 13.17 13.07 13.26 12.72( + 0.04 - 0.05 ) 1986 Feb 4 6.0 Q IRTF Table10 13.40 13.30 13.55 12.84( + 0.08 - 0.10 ) 1983 300.0 IRAS1 IRAS Table11 13.47 13.36 13.56 12.62( + 0.04 - 0.04 ) 1986 Feb 4 6.0 N IRTF Table10 13.47 13.36 13.56 12.60( + 0.06 - 0.06 ) 1981 May 13 5.0 N Hale ApJS63,615 13.90 13.86 13.94 12.53( + 0.02 - 0.02 ) 1986 Feb 4 6.0 L' IRTF Table9 13.90 13.86 13.94 12.62( + 0.02 - 0.02 ) 1988 Apr 25 6.0 L' IRTF Table9 13.90 13.86 13.94 12.62( + 0.03 - 0.03 ) 1981 May 13 5.0 L' Hale ApJS63,615 13.93 13.88 14.00 12.62( + 0.02 - 0.02 ) 1986 Feb 23 9.0 L MMT Table9 13.93 13.88 14.00 12.55( + 0.03 - 0.03 ) 1988 Apr 8 5.0 L MMT Table9 14.13 14.11 14.19 12.50( + 0.02 - 0.02 ) 1986 Feb 4 6.0 K IRTF Table9 14.13 14.11 14.19 12.52( + 0.02 - 0.02 ) 1986 Feb 23 9.0 K MMT Table9 14.13 14.11 14.19 12.44( + 0.02 - 0.02 ) 1988 Apr 25 6.0 K IRTF Table9 14.13 14.11 14.19 12.44( + 0.02 - 0.02 ) 1988 Apr 8 5.0 K MMT Table9 14.13 14.11 14.19 12.58( + 0.00 - 0.00 ) 1985 Apr 11 12.0 K UoA1.55m/InSb Table6B 14.13 14.11 14.19 12.55( + 0.00 - 0.00 ) 1985 Apr 12 12.0 K UoA1.55m/InSb Table6B 14.13 14.11 14.19 12.50( + 0.02 - 0.02 ) 1987 Jan 25 12.0 K UoA1.55m/InSb Table6B 14.13 14.11 14.19 12.54( + 0.00 - 0.00 ) 1987 Apr 14 9.0 K MMT Table9 14.13 14.11 14.19 12.53( + 0.03 - 0.03 ) 1980 May 29 5.0 K Hale ApJS63,615 14.13 14.11 14.19 12.59( + 0.03 - 0.03 ) 1981 May 13 5.0 K Hale ApJS63,615 14.26 14.23 14.31 12.34( + 0.02 - 0.02 ) 1986 Feb 4 6.0 H IRTF Table9 14.26 14.23 14.31 12.35( + 0.02 - 0.02 ) 1986 Feb 23 9.0 H MMT Table9 14.26 14.23 14.31 12.29( + 0.02 - 0.02 ) 1988 Apr 25 6.0 H IRTF Table9 14.26 14.23 14.31 12.26( + 0.02 - 0.02 ) 1988 Apr 8 5.0 H MMT Table9 14.26 14.23 14.31 12.41( + 0.00 - 0.00 ) 1985 Apr 11 12.0 H UoA1.55m/InSb Table6B 14.26 14.23 14.31 12.39( + 0.00 - 0.00 ) 1985 Apr 12 12.0 H UoA1.55m/InSb Table6B 14.26 14.23 14.31 12.37( + 0.03 - 0.03 ) 1987 Jan 25 12.0 H UoA1.55m/InSb Table6B 14.26 14.23 14.31 12.38( + 0.00 - 0.00 ) 1987 Apr 14 9.0 H MMT Table9 14.26 14.23 14.31 12.44( + 0.03 - 0.03 ) 1980 May 29 5.0 H Hale ApJS63,615 14.26 14.23 14.31 12.43( + 0.03 - 0.03 ) 1981 May 13 5.0 H Hale ApJS63,615 14.38 14.35 14.45 12.30( + 0.02 - 0.02 ) 1986 Feb 4 6.0 J IRTF Table9 14.38 14.35 14.45 12.36( + 0.02 - 0.02 ) 1986 Feb 23 9.0 J MMT Table9 14.38 14.35 14.45 12.29( + 0.02 - 0.02 ) 1988 Apr 25 6.0 J IRTF Table9 14.38 14.35 14.45 12.22( + 0.02 - 0.02 ) 1988 Apr 8 5.0 J MMT Table9 14.38 14.35 14.45 12.42( + 0.00 - 0.00 ) 1985 Apr 11 12.0 J UoA1.55m/InSb Table6B 14.38 14.35 14.45 12.42( + 0.00 - 0.00 ) 1985 Apr 12 12.0 J UoA1.55m/InSb Table6B 14.38 14.35 14.45 12.38( + 0.02 - 0.02 ) 1987 Jan 25 12.0 J UoA1.55m/InSb Table6B 14.38 14.35 14.45 12.37( + 0.00 - 0.00 ) 1987 Apr 14 9.0 J MMT Table9 14.38 14.35 14.45 12.43( + 0.03 - 0.03 ) 1980 May 29 5.0 J Hale ApJS63,615 14.38 14.35 14.45 12.41( + 0.03 - 0.03 ) 1981 May 13 5.0 J Hale ApJS63,615 14.52 14.46 14.58 12.47( + 0.02 - 0.02 ) 1985 May 14 14.0 I MtHopk(24in) Table6 14.52 14.46 14.58 12.51( + 0.00 - 0.00 ) 1985 Apr 11 12.0 I MtLemmon1.5m/PM Table6B 14.52 14.46 14.58 12.53( + 0.00 - 0.00 ) 1985 Apr 12 12.0 I MtLemmon1.5m/PM Table6B 14.52 14.46 14.58 12.50( + 0.00 - 0.00 ) 1987 Jan 25 12.0 I MtLemmon1.5m/PM Table6B 14.55 14.54 14.56 12.30( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.56 14.56 14.57 12.60( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.56 14.56 14.57 12.33( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.57 14.57 14.58 12.60( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.57 14.57 14.58 12.34( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.58 14.58 14.59 12.62( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.58 14.58 14.59 12.37( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.60 14.59 14.60 12.65( + 0.01 - 0.01 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.60 14.59 14.60 12.43( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.60 14.60 14.61 12.43( + 0.00 - 0.00 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.63 14.57 14.70 12.56( + 0.02 - 0.02 ) 1985 May 14 14.0 R MtHopk(24in) Table6 14.63 14.57 14.70 12.62( + 0.00 - 0.00 ) 1985 Apr 11 12.0 R MtLemmon1.5m/PM Table6B 14.63 14.57 14.70 12.66( + 0.00 - 0.00 ) 1985 Apr 12 12.0 R MtLemmon1.5m/PM Table6B 14.63 14.57 14.70 12.64( + 0.00 - 0.00 ) 1987 Jan 25 12.0 R MtLemmon1.5m/PM Table6B 14.65 14.65 14.66 12.65( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.65 14.65 14.66 12.43( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.66 14.66 14.67 12.43( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.68 14.67 14.69 12.45( + 0.04 - 0.04 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.68 14.67 14.69 12.45( + 0.03 - 0.03 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.69 14.69 14.70 12.64( + 0.01 - 0.01 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.69 14.69 14.70 12.44( + 0.02 - 0.02 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.69 14.69 14.70 12.44( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.71 14.70 14.72 12.65( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.71 14.70 14.72 12.48( + 0.02 - 0.02 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.71 14.70 14.72 12.47( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.73 14.72 14.73 12.52( + 0.02 - 0.02 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.73 14.72 14.73 12.52( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.74 14.70 14.78 12.60( + 0.02 - 0.02 ) 1985 May 14 14.0 V MtHopk(24in) Table6 14.74 14.70 14.78 12.65( + 0.00 - 0.00 ) 1985 Apr 11 12.0 V MtLemmon1.5m/PM Table6B 14.74 14.70 14.78 12.68( + 0.00 - 0.00 ) 1985 Apr 12 12.0 V MtLemmon1.5m/PM Table6B 14.74 14.70 14.78 12.63( + 0.00 - 0.00 ) 1987 Jan 25 12.0 V MtLemmon1.5m/PM Table6B 14.78 14.77 14.78 12.55( + 0.01 - 0.01 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.78 14.77 14.78 12.54( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.79 14.78 14.79 12.78( + 0.01 - 0.01 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.79 14.78 14.79 12.55( + 0.01 - 0.01 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.79 14.78 14.79 12.57( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.83 14.78 14.89 12.64( + 0.03 - 0.03 ) 1985 May 14 14.0 B MtHopk(24in) Table6 14.83 14.78 14.89 12.68( + 0.00 - 0.00 ) 1985 Apr 11 12.0 B MtLemmon1.5m/PM Table6B 14.83 14.78 14.89 12.69( + 0.00 - 0.00 ) 1985 Apr 12 12.0 B MtLemmon1.5m/PM Table6B 14.83 14.78 14.89 12.67( + 0.00 - 0.00 ) 1987 Jan 25 12.0 B MtLemmon1.5m/PM Table6B 14.86 14.86 14.87 12.83( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.86 14.86 14.87 12.58( + 0.01 - 0.01 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.89 14.88 14.89 12.85( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.89 14.88 14.89 12.63( + 0.01 - 0.01 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.92 14.89 14.96 12.76( + 0.00 - 0.00 ) 1985 Apr 11 12.0 U MtLemmon1.5m/PM Table6B 14.92 14.89 14.96 12.77( + 0.00 - 0.00 ) 1985 Apr 12 12.0 U MtLemmon1.5m/PM Table6B 14.92 14.89 14.96 12.70( + 0.00 - 0.00 ) 1987 Jan 25 12.0 U MtLemmon1.5m/PM Table6B 14.93 14.92 14.94 12.89( + 0.00 - 0.00 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.93 14.92 14.94 12.69( + 0.00 - 0.00 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.94 14.94 14.95 12.90( + 0.01 - 0.01 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.94 14.94 14.95 12.69( + 0.01 - 0.01 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.96 14.95 14.96 12.89( + 0.01 - 0.01 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.96 14.95 14.96 12.67( + 0.00 - 0.00 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 14.97 14.96 14.98 12.78( + 0.02 - 0.03 ) 1985 Dec 2 15.0 - LWP07223 RDAF 14.97 14.96 14.98 12.73( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 14.97 14.96 14.98 12.91( + 0.01 - 0.01 ) 1980 Jun 5 15.0 AB Hale ApJS63,615 14.97 14.96 14.98 12.64( + 0.02 - 0.02 ) 1988 Jun 6 5.0 - MMT/Blue Elvis,etal.1990 15.01 15.01 15.02 12.76( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.01 15.01 15.02 12.71( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.03 15.02 15.04 12.75( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.03 15.02 15.04 12.70( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.04 15.04 15.05 12.79( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.04 15.04 15.05 12.72( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.06 15.05 15.07 12.77( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.06 15.05 15.07 12.72( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.08 15.07 15.09 12.75( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.08 15.07 15.09 12.70( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.10 15.09 15.11 12.69( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.10 15.09 15.11 12.63( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.12 15.11 15.13 12.73( + 0.03 - 0.03 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.12 15.11 15.13 12.68( + 0.02 - 0.03 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.14 15.13 15.15 12.67( + 0.03 - 0.03 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.14 15.13 15.15 12.60( + 0.03 - 0.03 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.18 15.17 15.19 12.64( + 0.03 - 0.03 ) 1985 Dec 2 15.0 - LWP07223 RDAF 15.18 15.17 15.19 12.58( + 0.03 - 0.03 ) 1987 Feb 13 15.0 - LWP10115 RDAF 15.19 15.19 15.20 12.68( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.19 15.19 15.20 12.57( + 0.03 - 0.03 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.20 15.20 15.21 12.73( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.20 15.20 15.21 12.58( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.22 15.21 15.22 12.78( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.22 15.21 15.22 12.66( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.23 15.22 15.24 12.87( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.23 15.22 15.24 12.71( + 0.02 - 0.03 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.27 15.27 15.28 12.60( + 0.02 - 0.03 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.31 15.30 15.32 12.82( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.31 15.30 15.32 12.59( + 0.03 - 0.03 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.33 15.32 15.34 12.77( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.33 15.32 15.34 12.58( + 0.02 - 0.02 ) 1987 Feb 13 15.0 - SWP30302 RDAF 15.39 15.38 15.40 12.70( + 0.02 - 0.02 ) 1985 Dec 2 15.0 - SWP27210 RDAF 15.39 15.38 15.40 12.53( + 0.03 - 0.03 ) 1987 Feb 13 15.0 - SWP30302 RDAF 17.38 16.68 17.93 12.12( + 0.06 - 0.06 ) 1980 Dec 11 - IPC IPC ApJ378,537 17.99 17.68 18.38 11.79( + 0.00 - 0.00 ) 1985 Jun 13 - ME EXOSAT ApJ384,062 17.99 17.68 18.38 11.68( + 0.00 - 0.00 ) 1988 May 6 3600.0 LAC GINGA-LAC ApJ389,157