NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-23 T16:36:59 PDT
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Spectral Energy Distribution (SED) for 4C +15.17:

10 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 171 +/- 24 milliJy 4.85E+09 1.71E-01 +/- 2.40E-02 Jy Broad-band 1991ApJS...75.1011G 1
2 4.85 GHz 167 +/- 15 % milliJy 4.85E+09 1.67E-01 +/- 2.50E-02 Jy Broad-band 1991ApJS...75....1B 2
3 1.40 GHz 453 ... milliJy 1.40E+09 4.53E-01 ... Jy Broad-band 1992ApJS...79..331W 3
4 1.4GHz 661.1 +/- 20.7 milliJy 1.40E+09 6.61E-01 +/- 2.07E-02 Jy Broad-band High peak 1998AJ....115.1693C 4
5 408 MHz 2.38 +/- 0.12 Jy 4.08E+08 2.38E+00 +/- 1.20E-01 Jy Broad-band 1981MNRAS.194..693L 5
6 365 MHz (Texas) 2.520 +/- 0.049 Jy 3.65E+08 2.52E+00 +/- 4.90E-02 Jy Broad-band Model:D;MFlag:+;EFlag:+;LFlag:W. 1996AJ....111.1945D 6
7 178 MHz 5.0 +/- 12.5% Jy 1.78E+08 5.00E+00 +/- 6.25E-01 Jy Broad-band 1967MmRAS..71...49G 7
8 74 MHz (VLA) 14.24 +/- 1.47 Jy 7.38E+07 1.42E+01 +/- 1.47E+00 Jy Broad-band Corrected for clean bias 2007AJ....134.1245C 8
9 26.3 MHz 49. +/- 8. Jy 2.63E+07 4.90E+01 +/- 8.00E+00 Jy Broad-band 1975AJ.....80..931V 9
10 22 MHz (DRAO) 68 +/- 9 Jy 2.23E+07 6.80E+01 +/- 9.00E+00 Jy Broad-band Flux affected by background 1986A&AS...65..485R 10


Detailed Information for Each Entry

 No. 1
Reference Code : 1991ApJS...75.1011G
Freq. targeted : 4.85 GHz            
Measurement    :  171         milliJy              = 1.71E-27 W m^-2^ Hz^-1^
Uncertainty    :  24          milliJy              = 2.40E-28
Significance   : rms noise
Freq or Vel.   : 4.85         GHz          (OBS   )= 4.85E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 055527.4        +152750 (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 : 167 milliJy = 1.67E-27 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 2.50E-28 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 055527.6 +152749 (B1950) Spatial mode : Peak flux Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 3 Reference Code : 1992ApJS...79..331W Freq. targeted : 1.40 GHz Measurement : 453 milliJy = 4.53E-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: 055527.6 +152749 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 4 Reference Code : 1998AJ....115.1693C Freq. targeted : 1.4GHz Measurement : 661.1 milliJy = 6.61E-27 W m^-2^ Hz^-1^ Uncertainty : 20.7 milliJy = 2.07E-28 Significance : uncertainty Freq or Vel. : 1.40 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 58 19.81 +15 27 55.5 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : High peak
No. 5 Reference Code : 1981MNRAS.194..693L Freq. targeted : 408 MHz Measurement : 2.38 Jy = 2.38E-26 W m^-2^ Hz^-1^ Uncertainty : 0.12 Jy = 1.20E-27 Significance : rms noise Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 055527.4 152745 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 6 Reference Code : 1996AJ....111.1945D Freq. targeted : 365 MHz (Texas) Measurement : 2.520 Jy = 2.52E-26 W m^-2^ Hz^-1^ Uncertainty : 0.049 Jy = 4.90E-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: 055527.464 152742.50 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : Model:D;MFlag:+;EFlag:+;LFlag:W.
No. 7 Reference Code : 1967MmRAS..71...49G Freq. targeted : 178 MHz Measurement : 5.0 Jy = 5.00E-26 W m^-2^ Hz^-1^ Uncertainty : 12.5% Jy = 6.25E-27 Significance : uncertainty Freq or Vel. : 178 MHz (OBS )= 1.78E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 055527.5 +152912 (B1950) Spatial mode : Integrated from scans Notes : From new raw data; Uncorrected for known sources in beam Qualifiers :
No. 8 Reference Code : 2007AJ....134.1245C Freq. targeted : 74 MHz (VLA) Measurement : 14.24 Jy = 1.42E-25 W m^-2^ Hz^-1^ Uncertainty : 1.47 Jy = 1.47E-26 Significance : rms uncertainty Freq or Vel. : 73.8 MHz (OBS )= 7.38E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 58 19.95 +15 27 52.7 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected for clean bias
No. 9 Reference Code : 1975AJ.....80..931V Freq. targeted : 26.3 MHz Measurement : 49. Jy = 4.90E-25 W m^-2^ Hz^-1^ Uncertainty : 8. Jy = 8.00E-26 Significance : uncertainty Freq or Vel. : 26.3 MHz (OBS )= 2.63E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 055542. +155300. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :
No. 10 Reference Code : 1986A&AS...65..485R Freq. targeted : 22 MHz (DRAO) Measurement : 68 Jy = 6.80E-25 W m^-2^ Hz^-1^ Uncertainty : 9 Jy = 9.00E-26 Significance : uncertainty Freq or Vel. : 22.25 MHz (OBS )= 2.23E+07 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 55 27.5 +15 29 12 (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Flux affected by background

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