Observed Energy Distribution: Q1613+658 log nu0 log nu1 log nu2 log nuFnu Date Aper Filter Instrument Ref (Hz) (Hz) (Hz) (Jy Hz) (") or or Detector Telescope 9.18 9.18 9.18 6.81( + 0.04 - 0.05 ) 1986 9.0 - VLA ApJS70,257 9.70 9.70 9.70 7.02( + 0.02 - 0.02 ) 1986 3.0 - VLA ApJS70,257 9.70 9.70 9.70 6.59( + 0.03 - 0.04 ) 1983 Nov 18.0 - VLA AJ098,1195 10.17 10.17 10.17 7.35( + 0.06 - 0.07 ) 1986 1.0 - VLA ApJS70,257 10.60 10.60 10.60 < 9.98 1986 - - FCRAO ApJS70,257 11.36 11.36 11.36 < 10.91 1986 - - NRAO12 ApJS70,257 11.36 11.36 11.36 < 8.87 1988 - - IRAM AAp219,087 12.48 12.40 12.56 12.59( + 0.03 - 0.03 ) 1983 300.0 IRAS4 IRAS(AO) Table11 12.70 12.57 12.87 12.51( + 0.01 - 0.01 ) 1983 300.0 IRAS3 IRAS(AO) Table11 13.08 13.00 13.20 12.40( + 0.02 - 0.02 ) 1983 300.0 IRAS2 IRAS(AO) Table11 13.40 13.30 13.55 12.30( + 0.05 - 0.06 ) 1983 300.0 IRAS1 IRAS(AO) Table11 13.47 13.36 13.56 12.31( + 0.06 - 0.06 ) 1985 Apr 2 4.0 N IRTF Table10 13.47 13.36 13.56 12.40( + 0.04 - 0.04 ) 1985 Aug 28 6.0 N IRTF Table10 13.47 13.36 13.56 12.55( + 0.08 - 0.10 ) 1985 Aug 27 6.0 N IRTF Table10 13.47 13.36 13.56 12.26( + 0.08 - 0.08 ) 1981 Jul 21 5.0 N Hale ApJS63,615 13.90 13.86 13.94 12.31( + 0.02 - 0.02 ) 1988 Apr 25 6.0 L' IRTF Table9 13.90 13.86 13.94 12.17( + 0.04 - 0.04 ) 1981 Jul 21 5.0 L' Hale ApJS63,615 13.93 13.88 14.00 11.84( + 0.15 - 0.22 ) 1984 Sep 15 5.0 L MMT Table9 13.93 13.88 14.00 12.29( + 0.02 - 0.02 ) 1985 May 5 5.0 L MMT Table9 13.93 13.88 14.00 12.32( + 0.03 - 0.03 ) 1988 Apr 7 5.0 L MMT Table9 14.13 14.11 14.19 12.24( + 0.02 - 0.02 ) 1984 Sep 15 9.0 K MMT Table9 14.13 14.11 14.19 12.27( + 0.02 - 0.02 ) 1985 May 5 5.0 K MMT Table9 14.13 14.11 14.19 12.26( + 0.02 - 0.02 ) 1988 Apr 25 6.0 K IRTF Table9 14.13 14.11 14.19 12.30( + 0.02 - 0.02 ) 1988 Apr 7 5.0 K MMT Table9 14.13 14.11 14.19 12.13( + 0.04 - 0.04 ) 1980 May 29 5.0 K Hale ApJS63,615 14.13 14.11 14.19 12.21( + 0.03 - 0.03 ) 1981 Jul 21 5.0 K Hale ApJS63,615 14.13 14.11 14.19 12.23( + 0.03 - 0.03 ) 1981 10.0 K MtLemmon(1.5) AJ087,0598 14.26 14.23 14.31 12.17( + 0.02 - 0.02 ) 1984 Sep 15 9.0 H MMT Table9 14.26 14.23 14.31 12.17( + 0.02 - 0.02 ) 1985 May 5 5.0 H MMT Table9 14.26 14.23 14.31 12.18( + 0.02 - 0.02 ) 1988 Apr 25 6.0 H IRTF Table9 14.26 14.23 14.31 12.19( + 0.02 - 0.02 ) 1988 Apr 7 5.0 H MMT Table9 14.26 14.23 14.31 12.06( + 0.04 - 0.04 ) 1980 May 29 5.0 H Hale ApJS63,615 14.26 14.23 14.31 12.06( + 0.04 - 0.04 ) 1981 Jul 21 5.0 H Hale ApJS63,615 14.26 14.23 14.31 12.10( + 0.03 - 0.03 ) 1981 10.0 H MtLemmon(1.5) AJ087,0598 14.38 14.35 14.45 11.99( + 0.02 - 0.02 ) 1984 Sep 15 9.0 J MMT Table9 14.38 14.35 14.45 12.18( + 0.02 - 0.02 ) 1985 May 5 5.0 J MMT Table9 14.38 14.35 14.45 12.14( + 0.02 - 0.02 ) 1988 Apr 25 6.0 J IRTF Table9 14.38 14.35 14.45 12.18( + 0.02 - 0.02 ) 1988 Apr 7 5.0 J MMT Table9 14.38 14.35 14.45 12.04( + 0.04 - 0.04 ) 1980 May 29 5.0 J Hale ApJS63,615 14.38 14.35 14.45 12.06( + 0.03 - 0.03 ) 1981 Jul 21 5.0 J Hale ApJS63,615 14.38 14.35 14.45 12.19( + 0.03 - 0.03 ) 1981 10.0 J MtLemmon(1.5) AJ087,0598 14.56 14.55 14.56 12.05( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.57 14.56 14.57 12.18( + 0.01 - 0.01 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.57 14.56 14.57 12.06( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.58 14.57 14.59 12.17( + 0.02 - 0.02 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.58 14.57 14.59 12.08( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.59 14.59 14.59 12.20( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.59 14.59 14.59 12.11( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.63 14.63 14.64 12.17( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.63 14.63 14.64 12.12( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.65 14.64 14.65 12.16( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.65 14.64 14.65 12.13( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.66 14.65 14.67 12.14( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.66 14.65 14.67 12.12( + 0.03 - 0.03 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.68 14.67 14.68 12.13( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.68 14.67 14.68 12.06( + 0.03 - 0.03 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.68 14.67 14.68 12.08( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.69 14.68 14.70 12.12( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.69 14.68 14.70 12.11( + 0.02 - 0.02 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.69 14.68 14.70 12.12( + 0.02 - 0.02 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.71 14.70 14.72 12.11( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.71 14.70 14.72 12.16( + 0.01 - 0.01 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.71 14.70 14.72 12.17( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.76 14.76 14.77 12.15( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.76 14.76 14.77 12.21( + 0.01 - 0.01 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.76 14.76 14.77 12.19( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.77 14.77 14.78 12.14( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.77 14.77 14.78 12.21( + 0.00 - 0.00 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.77 14.77 14.78 12.20( + 0.01 - 0.01 ) 1988 Sep 4 10.0 - MMT/FOGS Elvis,etal.1990 14.84 14.84 14.85 12.11( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.84 14.84 14.85 12.29( + 0.01 - 0.01 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.87 14.86 14.87 12.12( + 0.00 - 0.00 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.87 14.86 14.87 12.32( + 0.00 - 0.00 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.91 14.91 14.92 12.21( + 0.02 - 0.02 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.91 14.91 14.92 12.39( + 0.02 - 0.02 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.93 14.92 14.93 12.24( + 0.01 - 0.01 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.93 14.92 14.93 12.39( + 0.01 - 0.01 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.94 14.93 14.95 12.19( + 0.02 - 0.02 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.94 14.93 14.95 12.36( + 0.01 - 0.01 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 14.95 14.95 14.96 12.20( + 0.01 - 0.01 ) 1980 Jun 4 15.0 AB Hale ApJS63,615 14.95 14.95 14.96 12.40( + 0.01 - 0.01 ) 1988 Jun 11 5.0 - MMT/Blue Elvis,etal.1990 15.00 14.99 15.00 12.21( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.00 14.99 15.00 12.22( + 0.02 - 0.02 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.00 14.99 15.00 12.30( + 0.02 - 0.02 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.00 14.99 15.00 12.33( + 0.04 - 0.04 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.01 15.00 15.02 12.23( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.01 15.00 15.02 12.22( + 0.02 - 0.02 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.01 15.00 15.02 12.31( + 0.02 - 0.02 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.01 15.00 15.02 12.32( + 0.03 - 0.03 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.03 15.02 15.04 12.33( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.03 15.02 15.04 12.24( + 0.02 - 0.02 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.03 15.02 15.04 12.32( + 0.02 - 0.02 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.03 15.02 15.04 12.34( + 0.03 - 0.03 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.04 15.04 15.05 12.31( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.04 15.04 15.05 12.20( + 0.02 - 0.02 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.04 15.04 15.05 12.32( + 0.02 - 0.02 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.04 15.04 15.05 12.30( + 0.03 - 0.03 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.06 15.05 15.07 12.22( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.06 15.05 15.07 12.18( + 0.02 - 0.02 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.06 15.05 15.07 12.27( + 0.02 - 0.02 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.06 15.05 15.07 12.29( + 0.03 - 0.04 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.08 15.07 15.09 12.21( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.08 15.07 15.09 12.10( + 0.02 - 0.02 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.08 15.07 15.09 12.23( + 0.02 - 0.02 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.08 15.07 15.09 12.36( + 0.04 - 0.04 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.10 15.09 15.11 12.17( + 0.04 - 0.04 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.10 15.09 15.11 12.10( + 0.03 - 0.03 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.10 15.09 15.11 12.21( + 0.02 - 0.03 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.10 15.09 15.11 12.46( + 0.04 - 0.04 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.12 15.11 15.13 12.38( + 0.04 - 0.05 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.12 15.11 15.13 12.07( + 0.03 - 0.03 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.12 15.11 15.13 12.22( + 0.03 - 0.03 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.12 15.11 15.13 12.52( + 0.05 - 0.06 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.16 15.16 15.17 12.24( + 0.04 - 0.05 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.16 15.16 15.17 12.16( + 0.03 - 0.03 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.16 15.16 15.17 12.30( + 0.04 - 0.04 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.16 15.16 15.17 12.52( + 0.08 - 0.09 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.18 15.17 15.18 12.27( + 0.04 - 0.05 ) 1983 Aug 26 15.0 - LWR16673 RDAF 15.18 15.17 15.18 12.19( + 0.03 - 0.04 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.18 15.17 15.18 12.19( + 0.05 - 0.06 ) 1983 May 25 15.0 - SWP20073 RDAF 15.18 15.17 15.18 12.15( + 0.04 - 0.04 ) 1984 Jan 13 15.0 - LWP02615 RDAF 15.18 15.17 15.18 12.47( + 0.06 - 0.07 ) 1984 Jun 12 15.0 - LWP03561 RDAF 15.19 15.18 15.19 12.26( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.19 15.18 15.19 12.08( + 0.03 - 0.04 ) 1981 Sep 6 15.0 - LWR11477 RDAF 15.19 15.18 15.19 12.16( + 0.03 - 0.04 ) 1983 May 25 15.0 - SWP20073 RDAF 15.19 15.18 15.19 12.26( + 0.02 - 0.03 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.19 15.18 15.19 12.36( + 0.04 - 0.05 ) 1984 Jun 12 15.0 - SWP23249 RDAF 15.20 15.19 15.21 12.33( + 0.02 - 0.02 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.20 15.19 15.21 12.31( + 0.03 - 0.03 ) 1983 May 25 15.0 - SWP20073 RDAF 15.20 15.19 15.21 12.29( + 0.02 - 0.02 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.20 15.19 15.21 12.47( + 0.03 - 0.03 ) 1984 Jun 12 15.0 - SWP23249 RDAF 15.21 15.21 15.22 12.40( + 0.02 - 0.02 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.21 15.21 15.22 12.35( + 0.02 - 0.03 ) 1983 May 25 15.0 - SWP20073 RDAF 15.21 15.21 15.22 12.36( + 0.02 - 0.02 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.21 15.21 15.22 12.38( + 0.03 - 0.03 ) 1984 Jun 12 15.0 - SWP23249 RDAF 15.26 15.25 15.26 12.27( + 0.02 - 0.03 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.26 15.25 15.26 12.21( + 0.04 - 0.04 ) 1983 May 25 15.0 - SWP20073 RDAF 15.26 15.25 15.26 12.20( + 0.02 - 0.03 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.26 15.25 15.26 12.45( + 0.03 - 0.04 ) 1984 Jun 12 15.0 - SWP23249 RDAF 15.29 15.29 15.30 12.36( + 0.03 - 0.03 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.29 15.29 15.30 12.31( + 0.04 - 0.04 ) 1983 May 25 15.0 - SWP20073 RDAF 15.29 15.29 15.30 12.25( + 0.03 - 0.03 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.29 15.29 15.30 12.29( + 0.05 - 0.06 ) 1984 Jun 12 15.0 - SWP23249 RDAF 15.31 15.30 15.32 12.34( + 0.02 - 0.02 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.31 15.30 15.32 12.27( + 0.03 - 0.04 ) 1983 May 25 15.0 - SWP20073 RDAF 15.31 15.30 15.32 12.30( + 0.02 - 0.03 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.31 15.30 15.32 12.44( + 0.04 - 0.04 ) 1984 Jun 12 15.0 - SWP23249 RDAF 15.37 15.36 15.38 12.26( + 0.02 - 0.02 ) 1983 Aug 26 15.0 - SWP20801 RDAF 15.37 15.36 15.38 12.27( + 0.03 - 0.03 ) 1983 May 25 15.0 - SWP20073 RDAF 15.37 15.36 15.38 12.26( + 0.02 - 0.02 ) 1984 Jan 7 15.0 - SWP21962 RDAF 15.37 15.36 15.38 12.54( + 0.03 - 0.03 ) 1984 Jun 12 15.0 - SWP23249 RDAF 16.68 16.56 16.86 < 11.99 1981 Feb 6 360.0 XS IPC10375 AAp253,035 17.38 16.59 17.93 11.51( + 0.02 - 0.02 ) 1981 Feb 6 360.0 IPC IPC10375 AAp253,035