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Date and Time of the Query: 2019-05-22 T09:38:32 PDT
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Spectral Energy Distribution (SED) for 4C +39.42:

8 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 4.85 GHz 84 +/- 11 milliJy 4.85E+09 8.40E-02 +/- 1.10E-02 Jy Broad-band 1991ApJS...75.1011G 1
2 4.85 GHz 153 +/- 15 % milliJy 4.85E+09 1.53E-01 +/- 2.30E-02 Jy Broad-band 1991ApJS...75....1B 2
3 1.40 GHz 544 ... milliJy 1.40E+09 5.44E-01 ... Jy Broad-band 1992ApJS...79..331W 3
4 408 MHz 1.03 +/- 0.03 Jy 4.08E+08 1.03E+00 +/- 2.87E-02 Jy Broad-band 1985A&AS...59..255F 4
5 408 MHz 1.224 +/- 8 % Jy 4.08E+08 1.22E+00 +/- 9.79E-02 Jy Broad-band 1973A&AS...11..291C 5
6 178 MHz 2.5 +/- 25.0% Jy 1.78E+08 2.50E+00 +/- 6.25E-01 Jy Broad-band 1965MmRAS..69..183P 6
7 74 MHz (VLA) 4.92 +/- 0.90 Jy 7.40E+07 4.92E+00 +/- 9.00E-01 Jy Broad-band 2005A&A...435..863M 7
8 26.3 MHz 26. +/- 7. Jy 2.63E+07 2.60E+01 +/- 7.00E+00 Jy Broad-band 1975AJ.....80..931V 8


Detailed Information for Each Entry

 No. 1
Reference Code : 1991ApJS...75.1011G
Freq. targeted : 4.85 GHz            
Measurement    :  84          milliJy              = 8.40E-28 W m^-2^ Hz^-1^
Uncertainty    :  11          milliJy              = 1.10E-28
Significance   : rms noise
Freq or Vel.   : 4.85         GHz          (OBS   )= 4.85E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 145009.1        +391007 (B1950)
Spatial mode   : Modelled datum
Notes          : From new raw data; Corrected for contaminating sources
Qualifiers     :                                         

No. 2 Reference Code : 1991ApJS...75....1B Freq. targeted : 4.85 GHz Measurement : 153 milliJy = 1.53E-27 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 2.29E-28 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 145009.1 +391006 (B1950) Spatial mode : Flux integrated from map Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 3 Reference Code : 1992ApJS...79..331W Freq. targeted : 1.40 GHz Measurement : 544 milliJy = 5.44E-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: 145009.1 +391006 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 4 Reference Code : 1985A&AS...59..255F Freq. targeted : 408 MHz Measurement : 1.03 Jy = 1.03E-26 W m^-2^ Hz^-1^ Uncertainty : 0.03 Jy = 2.87E-28 Significance : rms uncertainty Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 14 50 9.7 39 9 57 (B1950) Spatial mode : Total flux Notes : From new raw data Qualifiers :
No. 5 Reference Code : 1973A&AS...11..291C Freq. targeted : 408 MHz Measurement : 1.224 Jy = 1.22E-26 W m^-2^ Hz^-1^ Uncertainty : 8 % Jy = 9.79E-28 Significance : internal error Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement; peak value reported Coord. targeted: 145010.2 +391006. (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 6 Reference Code : 1965MmRAS..69..183P Freq. targeted : 178 MHz Measurement : 2.5 Jy = 2.50E-26 W m^-2^ Hz^-1^ Uncertainty : 25.0% Jy = 6.25E-27 Significance : uncertainty Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 145010.4 +391112 (B1950) Spatial mode : Integrated from scans Notes : From new raw data; Uncorrected for known sources in beam Qualifiers :
No. 7 Reference Code : 2005A&A...435..863M Freq. targeted : 74 MHz (VLA) Measurement : 4.92 Jy = 4.92E-26 W m^-2^ Hz^-1^ Uncertainty : 0.90 Jy = 9.00E-27 Significance : uncertainty Freq or Vel. : 74 MHz (OBS )= 7.40E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 8 Reference Code : 1975AJ.....80..931V Freq. targeted : 26.3 MHz Measurement : 26. Jy = 2.60E-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: 145030. +393300. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :

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