NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-22 T11:43:04 PDT
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Spectral Energy Distribution (SED) for 4C +49.18:

3 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.
1 178 MHz 2.9 +/- 15.0% Jy 1.78E+08 2.90E+00 +/- 4.35E-01 Jy Broad-band 1967MmRAS..71...49G 1
2 26.3 MHz 29. +/- 7. Jy 2.63E+07 2.90E+01 +/- 7.00E+00 Jy Broad-band 1975AJ.....80..931V 2
3 22 MHz (DRAO) 44 +/- 4 Jy 2.23E+07 4.40E+01 +/- 4.00E+00 Jy Broad-band 1986A&AS...65..485R 3


Detailed Information for Each Entry

 No. 1
Reference Code : 1967MmRAS..71...49G
Freq. targeted : 178 MHz             
Measurement    :  2.9         Jy                   = 2.90E-26 W m^-2^ Hz^-1^
Uncertainty    :  15.0%       Jy                   = 4.35E-27
Significance   : uncertainty
Freq or Vel.   : 178          MHz          (OBS   )= 1.78E+08 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 084756.9        +491530 (B1950)
Spatial mode   : Integrated from scans
Notes          : From new raw data; Uncorrected for known sources in beam
Qualifiers     :                                         

No. 2 Reference Code : 1975AJ.....80..931V Freq. targeted : 26.3 MHz Measurement : 29. Jy = 2.90E-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: 084806. +491900. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :
No. 3 Reference Code : 1986A&AS...65..485R Freq. targeted : 22 MHz (DRAO) Measurement : 44 Jy = 4.40E-25 W m^-2^ Hz^-1^ Uncertainty : 4 Jy = 4.00E-26 Significance : uncertainty Freq or Vel. : 22.25 MHz (OBS )= 2.23E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 08 47 56.9 +49 15 30 (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :

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