NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-23 T21:55:20 PDT
Help | Comment | NED Home

Spectral Energy Distribution (SED) for NGC 1491:

5 Data Points
 Click to zoom in at a position of interest (uses a separate window). 
Select zoom factor:  

                Postscript version of the SED plot






  New options   Format tabular data as:


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 3805 +/- 429 milliJy 4.85E+09 3.81E+00 +/- 4.29E-01 Jy Broad-band 1991ApJS...75.1011G 1
2 4.85 GHz 8070 +/- 15 % milliJy 4.85E+09 8.07E+00 +/- 1.21E+00 Jy Broad-band 1991ApJS...75....1B 2
3 1.40 GHz 11505 ... milliJy 1.40E+09 1.15E+01 ... Jy Broad-band 1992ApJS...79..331W 3
4 1.40 GHz 16154 ... milliJy 1.40E+09 1.62E+01 ... Jy Broad-band 1992ApJS...79..331W 4
5 365 MHz (Texas) 0.188 +/- 0.038 Jy 3.65E+08 1.88E-01 +/- 3.80E-02 Jy Broad-band Model:P;MFlag:N;EFlag:W;LFlag:W. 1996AJ....111.1945D 5


Detailed Information for Each Entry

 No. 1
Reference Code : 1991ApJS...75.1011G
Freq. targeted : 4.85 GHz            
Measurement    :  3805        milliJy              = 3.81E-26 W m^-2^ Hz^-1^
Uncertainty    :  429         milliJy              = 4.29E-27
Significance   : rms noise
Freq or Vel.   : 4.85         GHz          (OBS   )= 4.85E+09 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 035932.5        +511046 (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 : 8070 milliJy = 8.07E-26 W m^-2^ Hz^-1^ Uncertainty : 15 % milliJy = 1.21E-26 Significance : uncertainty Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 035931.5 +511048 (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 : 11505 milliJy = 1.15E-25 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: 035931.5 +511048 (B1950) Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 4 Reference Code : 1992ApJS...79..331W Freq. targeted : 1.40 GHz Measurement : 16154 milliJy = 1.62E-25 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: 035931.5 +511048 (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 5 Reference Code : 1996AJ....111.1945D Freq. targeted : 365 MHz (Texas) Measurement : 0.188 Jy = 1.88E-27 W m^-2^ Hz^-1^ Uncertainty : 0.038 Jy = 3.80E-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: 035930.836 510913.07 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : Model:P;MFlag:N;EFlag:W;LFlag:W.

Back to NED Home