NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-23 T03:14:36 PDT
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Spectral Energy Distribution (SED) for NGC 3918:

15 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 J (2MASS/CTIO) 10.545 +/- 0.002 mag 2.43E+14 9.65E-02 +/- 1.78E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 1
2 J (2MASS/CTIO) 11.691 +/- 0.211 mag 2.43E+14 3.36E-02 +/- 6.53E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 2
3 H (2MASS/CTIO) 10.529 +/- 0.003 mag 1.80E+14 6.29E-02 +/- 1.74E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 3
4 H (2MASS/CTIO) 11.568 +/- 0.236 mag 1.80E+14 2.42E-02 +/- 5.25E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 4
5 K_s (2MASS/CTIO) 9.859 +/- 0.01 mag 1.39E+14 7.59E-02 +/- 6.99E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 5
6 K_s (2MASS/CTIO) 10.422 +/- 0.105 mag 1.39E+14 4.52E-02 +/- 4.37E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 6
7 12 microns (IRAS) 6.761 +/- 3 % Jy 2.50E+13 6.76E+00 +/- 2.03E-01 Jy Broad-band IRAS quality flag = 3 1988IRASP.C2..0000: 7
8 25 microns (IRAS) 60.939 +/- 3 % Jy 1.20E+13 6.09E+01 +/- 1.83E+00 Jy Broad-band IRAS quality flag = 3 1988IRASP.C2..0000: 8
9 60 microns (IRAS) 53.980 +/- 9 % Jy 5.00E+12 5.40E+01 +/- 4.86E+00 Jy Broad-band IRAS quality flag = 3 1988IRASP.C2..0000: 9
10 100 microns (IRAS) 20.350 +/- 10 % Jy 3.00E+12 2.04E+01 +/- 2.04E+00 Jy Broad-band IRAS quality flag = 3 1988IRASP.C2..0000: 10
11 20 GHz (ATCA) 476 +/- 24 milliJy 1.99E+10 4.76E-01 +/- 2.40E-02 Jy Broad-band 2010MNRAS.402.2403M 11
12 8 GHz (ATCA) 287 +/- 14 milliJy 8.00E+09 2.87E-01 +/- 1.40E-02 Jy Broad-band 2010MNRAS.402.2403M 12
13 5 GHz (ATCA) 413 +/- 21 milliJy 5.00E+09 4.13E-01 +/- 2.10E-02 Jy Broad-band 2010MNRAS.402.2403M 13
14 4.85 GHz 849 +/- 45 milliJy 4.85E+09 8.49E-01 +/- 4.50E-02 Jy Broad-band 1994ApJS...91..111W 14
15 4.85 GHz 851 +/- 43 milliJy 4.85E+09 8.51E-01 +/- 4.30E-02 Jy Broad-band 1994ApJS...90..173G 15


Detailed Information for Each Entry

 No. 1
Reference Code : 2006AJ....131.1163S
Freq. targeted : J (2MASS/CTIO)      
Measurement    :  10.545      mag                  = 9.65E-28 W m^-2^ Hz^-1^
Uncertainty    :  0.002       mag                  = 1.78E-30
Significance   : uncertainty
Freq or Vel.   : 1.235        microns      (OBS   )= 2.43E+14 Hz
Frequency mode : Broad-band measurement
Coord. targeted:
Spatial mode   : Flux in fixed aperture
Notes          : From new raw data
Qualifiers     : 4" aperture                             

No. 2 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 11.691 mag = 3.36E-28 W m^-2^ Hz^-1^ Uncertainty : 0.211 mag = 6.53E-29 Significance : uncertainty Freq or Vel. : 1.235 microns (OBS )= 2.43E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : Profile-fit; Poor quality
No. 3 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 10.529 mag = 6.29E-28 W m^-2^ Hz^-1^ Uncertainty : 0.003 mag = 1.74E-30 Significance : uncertainty Freq or Vel. : 1.662 microns (OBS )= 1.80E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 4" aperture
No. 4 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 11.568 mag = 2.42E-28 W m^-2^ Hz^-1^ Uncertainty : 0.236 mag = 5.25E-29 Significance : uncertainty Freq or Vel. : 1.662 microns (OBS )= 1.80E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : Profile-fit; Poor quality
No. 5 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 9.859 mag = 7.59E-28 W m^-2^ Hz^-1^ Uncertainty : 0.01 mag = 6.99E-30 Significance : uncertainty Freq or Vel. : 2.159 microns (OBS )= 1.39E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 4" aperture
No. 6 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 10.422 mag = 4.52E-28 W m^-2^ Hz^-1^ Uncertainty : 0.105 mag = 4.37E-29 Significance : uncertainty Freq or Vel. : 2.159 microns (OBS )= 1.39E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : Profile-fit; Poor quality
No. 7 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 12 microns (IRAS) Measurement : 6.761 Jy = 6.76E-26 W m^-2^ Hz^-1^ Uncertainty : 3 % Jy = 2.03E-27 Significance : uncertainty Freq or Vel. : 12 microns (OBS )= 2.50E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 114748.4 -565412 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 8 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 25 microns (IRAS) Measurement : 60.939 Jy = 6.09E-25 W m^-2^ Hz^-1^ Uncertainty : 3 % Jy = 1.83E-26 Significance : uncertainty Freq or Vel. : 25 microns (OBS )= 1.20E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 114748.4 -565412 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 9 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 60 microns (IRAS) Measurement : 53.980 Jy = 5.40E-25 W m^-2^ Hz^-1^ Uncertainty : 9 % Jy = 4.86E-26 Significance : uncertainty Freq or Vel. : 60 microns (OBS )= 5.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 114748.4 -565412 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 10 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 100 microns (IRAS) Measurement : 20.350 Jy = 2.03E-25 W m^-2^ Hz^-1^ Uncertainty : 10 % Jy = 2.03E-26 Significance : uncertainty Freq or Vel. : 100 microns (OBS )= 3.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 114748.4 -565412 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 11 Reference Code : 2010MNRAS.402.2403M Freq. targeted : 20 GHz (ATCA) Measurement : 476 milliJy = 4.76E-27 W m^-2^ Hz^-1^ Uncertainty : 24 milliJy = 2.40E-28 Significance : rms uncertainty Freq or Vel. : 19.904 GHz (OBS )= 1.99E+10 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 50 17.95 -57 10 56.4 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 12 Reference Code : 2010MNRAS.402.2403M Freq. targeted : 8 GHz (ATCA) Measurement : 287 milliJy = 2.87E-27 W m^-2^ Hz^-1^ Uncertainty : 14 milliJy = 1.40E-28 Significance : rms uncertainty Freq or Vel. : 8 GHz (OBS )= 8.00E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 50 17.95 -57 10 56.4 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 13 Reference Code : 2010MNRAS.402.2403M Freq. targeted : 5 GHz (ATCA) Measurement : 413 milliJy = 4.13E-27 W m^-2^ Hz^-1^ Uncertainty : 21 milliJy = 2.10E-28 Significance : rms uncertainty Freq or Vel. : 5 GHz (OBS )= 5.00E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 11 50 17.95 -57 10 56.4 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 14 Reference Code : 1994ApJS...91..111W Freq. targeted : 4.85 GHz Measurement : 849 milliJy = 8.49E-27 W m^-2^ Hz^-1^ Uncertainty : 45 milliJy = 4.50E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 115017.5 -571102 (J2000) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 15 Reference Code : 1994ApJS...90..173G Freq. targeted : 4.85 GHz Measurement : 851 milliJy = 8.51E-27 W m^-2^ Hz^-1^ Uncertainty : 43 milliJy = 4.30E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 114748.7 -565422 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :

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