NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-26 T15:43:27 PDT
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Spectral Energy Distribution (SED) for 4C +15.53:

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 234 +/- 32 milliJy 4.85E+09 2.34E-01 +/- 3.20E-02 Jy Broad-band 1991ApJS...75.1011G 1
2 4.85 GHz 231 +/- 15 % milliJy 4.85E+09 2.31E-01 +/- 3.47E-02 Jy Broad-band 1991ApJS...75....1B 2
3 4775 MHz (NRAO) 322 ... milliJy 4.78E+09 3.22E-01 ... Jy Broad-band S/N = 27.1 1986ApJS...61....1B 3
4 1.40 GHz 748 ... milliJy 1.40E+09 7.48E-01 ... Jy Broad-band 1992ApJS...79..331W 4
5 408 MHz 2.19 +/- 0.06 Jy 4.08E+08 2.19E+00 +/- 6.00E-02 Jy Broad-band 1981MNRAS.194..693L 5
6 178 MHz 3.5 +/- 25.0% Jy 1.78E+08 3.50E+00 +/- 8.75E-01 Jy Broad-band 1967MmRAS..71...49G 6
7 160 MHz 4.1 ... Jy 1.60E+08 4.10E+00 ... Jy Broad-band 1995AuJPh..48..143S 7
8 80 MHz 9. ... Jy 8.00E+07 9.00E+00 ... Jy Broad-band 1995AuJPh..48..143S 8
9 74 MHz (VLA) 8.06 +/- 0.86 Jy 7.38E+07 8.06E+00 +/- 8.60E-01 Jy Broad-band Corrected for clean bias 2007AJ....134.1245C 9


Detailed Information for Each Entry

 No. 1
Reference Code : 1991ApJS...75.1011G
Freq. targeted : 4.85 GHz            
Measurement    :  234         milliJy              = 2.34E-27 W m^-2^ Hz^-1^
Uncertainty    :  32          milliJy              = 3.20E-28
Significance   : rms noise
Freq or Vel.   : 4.85         GHz          (OBS   )= 4.85E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 160020.2        +155216 (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 : 231 milliJy = 2.31E-27 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 3.47E-28 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 160020.2 +155217 (B1950) Spatial mode : Peak flux Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 3 Reference Code : 1986ApJS...61....1B Freq. targeted : 4775 MHz (NRAO) Measurement : 322 milliJy = 3.22E-27 W m^-2^ Hz^-1^ Uncertainty : milliJy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4775 MHz (OBS )= 4.78E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 16 02 34.1 +15 43 31 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : S/N = 27.1
No. 4 Reference Code : 1992ApJS...79..331W Freq. targeted : 1.40 GHz Measurement : 748 milliJy = 7.48E-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: 160020.2 +155217 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 5 Reference Code : 1981MNRAS.194..693L Freq. targeted : 408 MHz Measurement : 2.19 Jy = 2.19E-26 W m^-2^ Hz^-1^ Uncertainty : 0.06 Jy = 6.00E-28 Significance : rms noise Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 160020.1 155232 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 6 Reference Code : 1967MmRAS..71...49G Freq. targeted : 178 MHz Measurement : 3.5 Jy = 3.50E-26 W m^-2^ Hz^-1^ Uncertainty : 25.0% Jy = 8.75E-27 Significance : uncertainty Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 160021.4 +155254 (B1950) Spatial mode : Integrated from scans Notes : From new raw data; Uncorrected for known sources in beam Qualifiers :
No. 7 Reference Code : 1995AuJPh..48..143S Freq. targeted : 160 MHz Measurement : 4.1 Jy = 4.10E-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: 160020.7 +155214. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 8 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: 160020.7 +155214. (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 9 Reference Code : 2007AJ....134.1245C Freq. targeted : 74 MHz (VLA) Measurement : 8.06 Jy = 8.06E-26 W m^-2^ Hz^-1^ Uncertainty : 0.86 Jy = 8.60E-27 Significance : rms uncertainty Freq or Vel. : 73.8 MHz (OBS )= 7.38E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 16 02 37.20 +15 44 22.3 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected for clean bias

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