NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-18 T11:25:24 PDT
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Spectral Energy Distribution (SED) for ABELL 1663:

2 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 0.1-2.4 keV (ROSAT) 4.460E-12 +/- 21.9% erg/s/cm^2^ 3.02E+17 1.48E-06 +/- 3.23E-07 Jy Broad-band Unabsorbed flux 2007A&A...469..363B 1
2 0.1-2.4 keV (ROSAT) 3.712E-11 +/- 14.9% erg/s/cm^2^ 3.02E+17 1.23E-05 +/- 1.83E-06 Jy Broad-band 2004A&A...423..449P 2


Detailed Information for Each Entry

 No. 1
Reference Code : 2007A&A...469..363B
Freq. targeted : 0.1-2.4 keV (ROSAT) 
Measurement    :  4.460E-12    erg/s/cm^2^         = 4.46E-15 W m^-2^
Uncertainty    :  21.9%        erg/s/cm^2^         = 9.77E-16
Significance   : uncertainty
Freq or Vel.   :       1.25   keV          (OBS   )= 3.02E+17 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 13 02 50.7      -02 30 22 (J2000)
Spatial mode   : Flux integrated from map
Notes          : Averaged from previously published data; NED frequency
                 assigned to mid-point of band in keV
Qualifiers     : Unabsorbed flux                         

No. 2 Reference Code : 2004A&A...423..449P Freq. targeted : 0.1-2.4 keV (ROSAT) Measurement : 3.712E-11 erg/s/cm^2^ = 3.71E-14 W m^-2^ Uncertainty : 14.9% erg/s/cm^2^ = 5.53E-15 Significance : 1 sigma Freq or Vel. : 1.25 keV (OBS )= 3.02E+17 Hz Frequency mode : Broad-band measurement Coord. targeted: 195.7112 -02.5062 (J2000) Spatial mode : Flux integrated from map Notes : From reprocessed raw data; NED frequency assigned to mid-point of band in keV Qualifiers :

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