NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-26 T06:08:27 PDT
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Spectral Energy Distribution (SED) for NGC 1918:

7 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 41 GHz (WMAP) 909 +/- 175 milliJy 4.10E+10 9.09E-01 +/- 1.75E-01 Jy Broad-band 2009MNRAS.392..733M 1
2 8400 MHz 0.20 ... Jy 8.40E+09 2.00E-01 ... Jy Broad-band 1990PKS90.C...0000W 2
3 5000 MHz 0.480 ... Jy 5.00E+09 4.80E-01 ... Jy Broad-band 1990PKS90.C...0000W 3
4 4.85 GHz 600 +/- 32 milliJy 4.85E+09 6.00E-01 +/- 3.20E-02 Jy Broad-band 1994ApJS...91..111W 4
5 4.85 GHz 508 +/- 26 milliJy 4.85E+09 5.08E-01 +/- 2.60E-02 Jy Broad-band 1994ApJS...90..173G 5
6 2700 MHz 0.670 ... Jy 2.70E+09 6.70E-01 ... Jy Broad-band 1990PKS90.C...0000W 6
7 408 MHz 1.000 ... Jy 4.08E+08 1.00E+00 ... Jy Broad-band 1990PKS90.C...0000W 7


Detailed Information for Each Entry

 No. 1
Reference Code : 2009MNRAS.392..733M
Freq. targeted : 41 GHz (WMAP)       
Measurement    :  909          milliJy             = 9.09E-27 W m^-2^ Hz^-1^
Uncertainty    :  175          milliJy             = 1.75E-27
Significance   : uncertainty
Freq or Vel.   :         41   GHz          (OBS   )= 4.10E+10 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 079.9305        -69.6190 (J2000)
Spatial mode   : Flux integrated from map
Notes          : From new raw data
Qualifiers     :                                         

No. 2 Reference Code : 1990PKS90.C...0000W Freq. targeted : 8400 MHz Measurement : 0.20 Jy = 2.00E-27 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 8400 MHz (OBS )= 8.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 19 26.3 -69 41 57 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 3 Reference Code : 1990PKS90.C...0000W Freq. targeted : 5000 MHz Measurement : 0.480 Jy = 4.80E-27 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 5000 MHz (OBS )= 5.00E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 19 26.3 -69 41 57 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 4 Reference Code : 1994ApJS...91..111W Freq. targeted : 4.85 GHz Measurement : 600 milliJy = 6.00E-27 W m^-2^ Hz^-1^ Uncertainty : 32 milliJy = 3.20E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 051904.5 -693856 (J2000) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 5 Reference Code : 1994ApJS...90..173G Freq. targeted : 4.85 GHz Measurement : 508 milliJy = 5.08E-27 W m^-2^ Hz^-1^ Uncertainty : 26 milliJy = 2.60E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 051923.7 -694135 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 6 Reference Code : 1990PKS90.C...0000W Freq. targeted : 2700 MHz Measurement : 0.670 Jy = 6.70E-27 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 2700 MHz (OBS )= 2.70E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 19 26.3 -69 41 57 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 7 Reference Code : 1990PKS90.C...0000W Freq. targeted : 408 MHz Measurement : 1.000 Jy = 1.00E-26 W m^-2^ Hz^-1^ Uncertainty : Jy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 19 26.3 -69 41 57 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :

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