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Date and Time of the Query: 2019-05-20 T01:09:37 PDT
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Spectral Energy Distribution (SED) for 4C +31.27:

14 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 253 +/- 33 milliJy 4.85E+09 2.53E-01 +/- 3.30E-02 Jy Broad-band 1991ApJS...75.1011G 1
2 4.85 GHz 245 +/- 15 % milliJy 4.85E+09 2.45E-01 +/- 3.68E-02 Jy Broad-band 1991ApJS...75....1B 2
3 4830 MHz (NRAO) 266 ... milliJy 4.83E+09 2.66E-01 ... Jy Broad-band S/N = 42 1990ApJS...72..621L 3
4 1.4GHz 941.7 +/- 30.3 milliJy 1.40E+09 9.42E-01 +/- 3.03E-02 Jy Broad-band High peak 1998AJ....115.1693C 4
5 1.40 GHz 926 ... milliJy 1.40E+09 9.26E-01 ... Jy Broad-band 1992ApJS...79..331W 5
6 408 MHz 2.940 +/- 5 % Jy 4.08E+08 2.94E+00 +/- 1.47E-01 Jy Broad-band 1970A&AS....1..281C 6
7 365 MHz (Texas) 3.244 +/- 0.091 Jy 3.65E+08 3.24E+00 +/- 9.10E-02 Jy Broad-band Model:D;MFlag:+;EFlag:+;LFlag:+. 1996AJ....111.1945D 7
8 178 MHz 4.8 +/- 12.5% Jy 1.78E+08 4.80E+00 +/- 6.00E-01 Jy Broad-band 1965MmRAS..69..183P 8
9 160 MHz 8.0 ... Jy 1.60E+08 8.00E+00 ... Jy Broad-band 1995AuJPh..48..143S 9
10 151 MHz (6C) 5.57 +/- 0.075 Jy 1.52E+08 5.57E+00 +/- 7.50E-02 Jy Broad-band 1993MNRAS.263...25H 10
11 151 MHz (6C) 5.78 +/- 0.170 Jy 1.52E+08 5.78E+00 +/- 1.70E-01 Jy Broad-band 1993MNRAS.263...25H 11
12 80 MHz 14. ... Jy 8.00E+07 1.40E+01 ... Jy Broad-band 1995AuJPh..48..143S 12
13 74 MHz (VLA) 11.60 +/- 1.19 Jy 7.38E+07 1.16E+01 +/- 1.19E+00 Jy Broad-band Corrected for clean bias 2007AJ....134.1245C 13
14 26.3 MHz 28. +/- 7. Jy 2.63E+07 2.80E+01 +/- 7.00E+00 Jy Broad-band 1975AJ.....80..931V 14


Detailed Information for Each Entry

 No. 1
Reference Code : 1991ApJS...75.1011G
Freq. targeted : 4.85 GHz            
Measurement    :  253         milliJy              = 2.53E-27 W m^-2^ Hz^-1^
Uncertainty    :  33          milliJy              = 3.30E-28
Significance   : rms noise
Freq or Vel.   : 4.85         GHz          (OBS   )= 4.85E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 072117.3        +313733 (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 : 245 milliJy = 2.45E-27 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 3.67E-28 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 072117.2 +313734 (B1950) Spatial mode : Peak flux Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 3 Reference Code : 1990ApJS...72..621L Freq. targeted : 4830 MHz (NRAO) Measurement : 266 milliJy = 2.66E-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: 07 24 30.6 +31 31 38 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : S/N = 42
No. 4 Reference Code : 1998AJ....115.1693C Freq. targeted : 1.4GHz Measurement : 941.7 milliJy = 9.42E-27 W m^-2^ Hz^-1^ Uncertainty : 30.3 milliJy = 3.03E-28 Significance : uncertainty Freq or Vel. : 1.40 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 07 24 29.90 +31 31 38.5 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : High peak
No. 5 Reference Code : 1992ApJS...79..331W Freq. targeted : 1.40 GHz Measurement : 926 milliJy = 9.26E-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: 072117.2 +313734 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 6 Reference Code : 1970A&AS....1..281C Freq. targeted : 408 MHz Measurement : 2.940 Jy = 2.94E-26 W m^-2^ Hz^-1^ Uncertainty : 5 % Jy = 1.47E-27 Significance : internal error Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement; peak value reported Coord. targeted: 072117.8 +313742. (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 7 Reference Code : 1996AJ....111.1945D Freq. targeted : 365 MHz (Texas) Measurement : 3.244 Jy = 3.24E-26 W m^-2^ Hz^-1^ Uncertainty : 0.091 Jy = 9.10E-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: 072117.680 313734.56 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : Model:D;MFlag:+;EFlag:+;LFlag:+.
No. 8 Reference Code : 1965MmRAS..69..183P Freq. targeted : 178 MHz Measurement : 4.8 Jy = 4.80E-26 W m^-2^ Hz^-1^ Uncertainty : 12.5% Jy = 6.00E-27 Significance : uncertainty Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 072118.2 +313800 (B1950) Spatial mode : Integrated from scans Notes : From new raw data; Uncorrected for known sources in beam Qualifiers :
No. 9 Reference Code : 1995AuJPh..48..143S Freq. targeted : 160 MHz Measurement : 8.0 Jy = 8.00E-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: 072117.3 +313729. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 10 Reference Code : 1993MNRAS.263...25H Freq. targeted : 151 MHz (6C) Measurement : 5.57 Jy = 5.57E-26 W m^-2^ Hz^-1^ Uncertainty : 0.075 Jy = 7.50E-28 Significance : typical accuracy Freq or Vel. : 151.5 MHz (OBS )= 1.52E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 072117.6 313736. (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 11 Reference Code : 1993MNRAS.263...25H Freq. targeted : 151 MHz (6C) Measurement : 5.78 Jy = 5.78E-26 W m^-2^ Hz^-1^ Uncertainty : 0.170 Jy = 1.70E-27 Significance : typical accuracy Freq or Vel. : 151.5 MHz (OBS )= 1.52E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 072117.6 313736. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 12 Reference Code : 1995AuJPh..48..143S Freq. targeted : 80 MHz Measurement : 14. Jy = 1.40E-25 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: 072117.3 +313729. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 13 Reference Code : 2007AJ....134.1245C Freq. targeted : 74 MHz (VLA) Measurement : 11.60 Jy = 1.16E-25 W m^-2^ Hz^-1^ Uncertainty : 1.19 Jy = 1.19E-26 Significance : rms uncertainty Freq or Vel. : 73.8 MHz (OBS )= 7.38E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 07 24 30.05 +31 31 41.5 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected for clean bias
No. 14 Reference Code : 1975AJ.....80..931V Freq. targeted : 26.3 MHz Measurement : 28. Jy = 2.80E-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: 072148. +313600. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :

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