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Date and Time of the Query: 2019-05-23 T06:08:00 PDT
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Spectral Energy Distribution (SED) for 4C +42.23:

9 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 797 +/- 95 milliJy 4.85E+09 7.97E-01 +/- 9.50E-02 Jy Broad-band 1991ApJS...75.1011G 1
2 4.85 GHz 1182 +/- 15 % milliJy 4.85E+09 1.18E+00 +/- 1.77E-01 Jy Broad-band 1991ApJS...75....1B 2
3 1.40 GHz 2679 ... milliJy 1.40E+09 2.68E+00 ... Jy Broad-band 1992ApJS...79..331W 3
4 1.4GHz 1108.0 +/- 36.5 milliJy 1.40E+09 1.11E+00 +/- 3.65E-02 Jy Broad-band High Integral 1998AJ....115.1693C 4
5 408 MHz 3.52 +/- 0.07 Jy 4.08E+08 3.52E+00 +/- 7.32E-02 Jy Broad-band 1985A&AS...59..255F 5
6 365 MHz (Texas) 1.508 +/- 0.082 Jy 3.65E+08 1.51E+00 +/- 8.20E-02 Jy Broad-band Model:A;MFlag:W;EFlag:W;LFlag:C. 1996AJ....111.1945D 6
7 178 MHz 3.7 +/- 25.0% Jy 1.78E+08 3.70E+00 +/- 9.25E-01 Jy Broad-band 1967MmRAS..71...49G 7
8 26.3 MHz 39. +/- 7. Jy 2.63E+07 3.90E+01 +/- 7.00E+00 Jy Broad-band 1975AJ.....80..931V 8
9 22 MHz (DRAO) 59 +/- 5 Jy 2.23E+07 5.90E+01 +/- 5.00E+00 Jy Broad-band 1986A&AS...65..485R 9


Detailed Information for Each Entry

 No. 1
Reference Code : 1991ApJS...75.1011G
Freq. targeted : 4.85 GHz            
Measurement    :  797         milliJy              = 7.97E-27 W m^-2^ Hz^-1^
Uncertainty    :  95          milliJy              = 9.50E-28
Significance   : rms noise
Freq or Vel.   : 4.85         GHz          (OBS   )= 4.85E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 070311.1        +423622 (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 : 1182 milliJy = 1.18E-26 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 1.77E-27 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 070311.3 +423623 (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 : 2679 milliJy = 2.68E-26 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: 070311.3 +423623 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 4 Reference Code : 1998AJ....115.1693C Freq. targeted : 1.4GHz Measurement : 1108.0 milliJy = 1.11E-26 W m^-2^ Hz^-1^ Uncertainty : 36.5 milliJy = 3.65E-28 Significance : uncertainty Freq or Vel. : 1.40 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 07 06 43.01 +42 32 3.8 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : High Integral
No. 5 Reference Code : 1985A&AS...59..255F Freq. targeted : 408 MHz Measurement : 3.52 Jy = 3.52E-26 W m^-2^ Hz^-1^ Uncertainty : 0.07 Jy = 7.32E-28 Significance : rms uncertainty Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 7 3 9.2 42 36 38 (B1950) Spatial mode : Total flux Notes : From new raw data Qualifiers :
No. 6 Reference Code : 1996AJ....111.1945D Freq. targeted : 365 MHz (Texas) Measurement : 1.508 Jy = 1.51E-26 W m^-2^ Hz^-1^ Uncertainty : 0.082 Jy = 8.20E-28 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: 070318.725 423623.40 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : Model:A;MFlag:W;EFlag:W;LFlag:C.
No. 7 Reference Code : 1967MmRAS..71...49G Freq. targeted : 178 MHz Measurement : 3.7 Jy = 3.70E-26 W m^-2^ Hz^-1^ Uncertainty : 25.0% Jy = 9.25E-27 Significance : uncertainty Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 070308.6 +423500 (B1950) Spatial mode : Integrated from scans Notes : From new raw data; Uncorrected for known sources in beam Qualifiers :
No. 8 Reference Code : 1975AJ.....80..931V Freq. targeted : 26.3 MHz Measurement : 39. Jy = 3.90E-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: 070318. +425100. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :
No. 9 Reference Code : 1986A&AS...65..485R Freq. targeted : 22 MHz (DRAO) Measurement : 59 Jy = 5.90E-25 W m^-2^ Hz^-1^ Uncertainty : 5 Jy = 5.00E-26 Significance : uncertainty Freq or Vel. : 22.25 MHz (OBS )= 2.23E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 07 03 08.6 +42 35 00 (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :

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