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Date and Time of the Query: 2019-05-21 T10:18:23 PDT
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Spectral Energy Distribution (SED) for 4C +26.31:

18 Data Points
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Photometric Data --- Published and Homogenized [Frequency, Flux Density] Units

  Published UnitsHomogenized Units [Frequency, Flux Density]  
No.Observed PassbandMeasurementUncertaintyUnitsFreq (Hz)MeasurementUncertaintyUnitsModeAperture/QualifiersReference CodeNo.
1 5000 MHz 0.190 ... Jy 5.00E+09 1.90E-01 ... Jy Broad-band 1990PKS90.C...0000W 1
2 4.85 GHz 150 +/- 20 milliJy 4.85E+09 1.50E-01 +/- 2.00E-02 Jy Broad-band 1991ApJS...75.1011G 2
3 4.85 GHz 147 +/- 15 % milliJy 4.85E+09 1.47E-01 +/- 2.21E-02 Jy Broad-band 1991ApJS...75....1B 3
4 4830 MHz (NRAO) 150 ... milliJy 4.83E+09 1.50E-01 ... Jy Broad-band S/N = 22 1990ApJS...72..621L 4
5 2700 MHz 0.300 ... Jy 2.70E+09 3.00E-01 ... Jy Broad-band 1990PKS90.C...0000W 5
6 1410 MHz 0.500 ... Jy 1.41E+09 5.00E-01 ... Jy Broad-band 1990PKS90.C...0000W 6
7 1.40 GHz 646 ... milliJy 1.40E+09 6.46E-01 ... Jy Broad-band 1992ApJS...79..331W 7
8 635 MHz 1.900 ... Jy 6.35E+08 1.90E+00 ... Jy Broad-band 1990PKS90.C...0000W 8
9 408 MHz 1.946 +/- 8 % Jy 4.08E+08 1.95E+00 +/- 1.56E-01 Jy Broad-band 1972A&AS....7....1C 9
10 365 MHz (Texas) 2.033 +/- 0.101 Jy 3.65E+08 2.03E+00 +/- 1.01E-01 Jy Broad-band Model:A;MFlag:+;EFlag:+;LFlag:W. 1996AJ....111.1945D 10
11 178 MHz 3.7 +/- 15.0% Jy 1.78E+08 3.70E+00 +/- 5.55E-01 Jy Broad-band 1965MmRAS..69..183P 11
12 178 MHz 3.700 ... Jy 1.78E+08 3.70E+00 ... Jy Broad-band 1990PKS90.C...0000W 12
13 160 MHz 5.2 ... Jy 1.60E+08 5.20E+00 ... Jy Broad-band 1995AuJPh..48..143S 13
14 151 MHz 4.44 +/- 4.2 % Jy 1.51E+08 4.44E+00 +/- 1.86E-01 Jy Broad-band 1996MNRAS.282..779W 14
15 80 MHz 9. ... Jy 8.00E+07 9.00E+00 ... Jy Broad-band 1995AuJPh..48..143S 15
16 80 MHz 8.000 ... Jy 8.00E+07 8.00E+00 ... Jy Broad-band 1990PKS90.C...0000W 16
17 74 MHz (VLA) 8.68 +/- 0.90 Jy 7.38E+07 8.68E+00 +/- 9.00E-01 Jy Broad-band Corrected for clean bias 2007AJ....134.1245C 17
18 26.3 MHz 25. +/- 7. Jy 2.63E+07 2.50E+01 +/- 7.00E+00 Jy Broad-band 1975AJ.....80..931V 18


Detailed Information for Each Entry

 No. 1
Reference Code : 1990PKS90.C...0000W
Freq. targeted : 5000 MHz            
Measurement    :  0.190       Jy                   = 1.90E-27 W m^-2^ Hz^-1^
Uncertainty    :              Jy                   = 0.00E+00
Significance   : no uncertainty reported
Freq or Vel.   :     5000     MHz          (OBS   )= 5.00E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 11 14 07.3      +26 04 19 (B1950)
Spatial mode   : Integrated from scans
Notes          : Homogenized from new and previously published data
Qualifiers     :                                         

No. 2 Reference Code : 1991ApJS...75.1011G Freq. targeted : 4.85 GHz Measurement : 150 milliJy = 1.50E-27 W m^-2^ Hz^-1^ Uncertainty : 20 milliJy = 2.00E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 111405.7 +260428 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 3 Reference Code : 1991ApJS...75....1B Freq. targeted : 4.85 GHz Measurement : 147 milliJy = 1.47E-27 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 2.20E-28 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 111405.9 +260430 (B1950) Spatial mode : Peak flux Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 4 Reference Code : 1990ApJS...72..621L Freq. targeted : 4830 MHz (NRAO) Measurement : 150 milliJy = 1.50E-27 W m^-2^ Hz^-1^ Uncertainty : milliJy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4830 MHz (OBS )= 4.83E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 16 46.7 +25 48 03 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : S/N = 22
No. 5 Reference Code : 1990PKS90.C...0000W Freq. targeted : 2700 MHz Measurement : 0.300 Jy = 3.00E-27 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 2700 MHz (OBS )= 2.70E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 14 07.3 +26 04 19 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 6 Reference Code : 1990PKS90.C...0000W Freq. targeted : 1410 MHz Measurement : 0.500 Jy = 5.00E-27 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 1410 MHz (OBS )= 1.41E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 14 07.3 +26 04 19 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 7 Reference Code : 1992ApJS...79..331W Freq. targeted : 1.40 GHz Measurement : 646 milliJy = 6.46E-27 W m^-2^ Hz^-1^ Uncertainty : milliJy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 1.4 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 111405.9 +260430 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 8 Reference Code : 1990PKS90.C...0000W Freq. targeted : 635 MHz Measurement : 1.900 Jy = 1.90E-26 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 635 MHz (OBS )= 6.35E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 14 07.3 +26 04 19 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 9 Reference Code : 1972A&AS....7....1C Freq. targeted : 408 MHz Measurement : 1.946 Jy = 1.95E-26 W m^-2^ Hz^-1^ Uncertainty : 8 % Jy = 1.56E-27 Significance : internal error Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement; peak value reported Coord. targeted: 111407.0 +260442. (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 10 Reference Code : 1996AJ....111.1945D Freq. targeted : 365 MHz (Texas) Measurement : 2.033 Jy = 2.03E-26 W m^-2^ Hz^-1^ Uncertainty : 0.101 Jy = 1.01E-27 Significance : internal error Freq or Vel. : 365 MHz (OBS )= 3.65E+08 Hz Frequency mode : Broad-band measurement; obtained by interpolation over frequency Coord. targeted: 111406.823 260436.86 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : Model:A;MFlag:+;EFlag:+;LFlag:W.
No. 11 Reference Code : 1965MmRAS..69..183P Freq. targeted : 178 MHz Measurement : 3.7 Jy = 3.70E-26 W m^-2^ Hz^-1^ Uncertainty : 15.0% Jy = 5.55E-27 Significance : uncertainty Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 111406.8 +260306 (B1950) Spatial mode : Integrated from scans Notes : From new raw data; Uncorrected for known sources in beam Qualifiers :
No. 12 Reference Code : 1990PKS90.C...0000W Freq. targeted : 178 MHz Measurement : 3.700 Jy = 3.70E-26 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 14 07.3 +26 04 19 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 13 Reference Code : 1995AuJPh..48..143S Freq. targeted : 160 MHz Measurement : 5.2 Jy = 5.20E-26 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 160 MHz (OBS )= 1.60E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 111408.7 +260438. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 14 Reference Code : 1996MNRAS.282..779W Freq. targeted : 151 MHz Measurement : 4.44 Jy = 4.44E-26 W m^-2^ Hz^-1^ Uncertainty : 4.2 % Jy = 1.86E-27 Significance : estimated error Freq or Vel. : 151 MHz (OBS )= 1.51E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 111406.5 +260448 (B1950) Spatial mode : Flux integrated from map; Beam filling or dilution corrected Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 15 Reference Code : 1995AuJPh..48..143S Freq. targeted : 80 MHz Measurement : 9. Jy = 9.00E-26 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 80 MHz (OBS )= 8.00E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 111408.7 +260438. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 16 Reference Code : 1990PKS90.C...0000W Freq. targeted : 80 MHz Measurement : 8.000 Jy = 8.00E-26 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 80 MHz (OBS )= 8.00E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 14 07.3 +26 04 19 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 17 Reference Code : 2007AJ....134.1245C Freq. targeted : 74 MHz (VLA) Measurement : 8.68 Jy = 8.68E-26 W m^-2^ Hz^-1^ Uncertainty : 0.90 Jy = 9.00E-27 Significance : rms uncertainty Freq or Vel. : 73.8 MHz (OBS )= 7.38E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 16 46.76 +25 48 10.3 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected for clean bias
No. 18 Reference Code : 1975AJ.....80..931V Freq. targeted : 26.3 MHz Measurement : 25. Jy = 2.50E-25 W m^-2^ Hz^-1^ Uncertainty : 7. Jy = 7.00E-26 Significance : uncertainty Freq or Vel. : 26.3 MHz (OBS )= 2.63E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 111400. +270200. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :

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