NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-19 T18:19:44 PDT
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Spectral Energy Distribution (SED) for ZwCl 2348.4+2908:

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 0.3-3.5 keV (EO IPC) 1.6630E-12 +/- 2.8700E-13 ergs cm^-2^ s^-1^ 3.87E+17 4.30E-07 +/- 7.42E-08 Jy Broad-band 1990ApJS...72..567G 1
2 0.1-2.4 keV (ROSAT) 5.50 +/- 32.1% 10^-12^ erg/cm^2^/s 3.15E+17 1.75E-06 +/- 5.61E-07 Jy Broad-band 1998MNRAS.301..881E 2


Detailed Information for Each Entry

 No. 1
Reference Code : 1990ApJS...72..567G
Freq. targeted : 0.3-3.5 keV (EO IPC)
Measurement    :  1.6630E-12  ergs cm^-2^ s^-1^    = 1.66E-15 W m^-2^
Uncertainty    :  2.8700E-13  ergs cm^-2^ s^-1^    = 2.87E-16
Significance   : 1 sigma
Freq or Vel.   : 1.6          keV          (OBS   )= 3.87E+17 Hz
Frequency mode : Broad-band measurement; broad-band flux derived by
                 integration over spectrum; synthetic band
Coord. targeted: 234802.3        +291314.4 (B1950)
Spatial mode   : Integrated from scans
Notes          : From new raw data; Extinction-corrected for Milky Way; NED
                 frequency assigned to mid-point of band in keV
Qualifiers     :                                         

No. 2 Reference Code : 1998MNRAS.301..881E Freq. targeted : 0.1-2.4 keV (ROSAT) Measurement : 5.50 10^-12^ erg/cm^2^/s = 5.50E-15 W m^-2^ Uncertainty : 32.1% 10^-12^ erg/cm^2^/s = 1.77E-15 Significance : 1 sigma Freq or Vel. : 1.3 keV (OBS )= 3.15E+17 Hz Frequency mode : Broad-band measurement Coord. targeted: 235034. +293151. (J2000) Spatial mode : Integrated from scans Notes : From reprocessed raw data Qualifiers :

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