NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-25 T15:09:18 PDT
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Spectral Energy Distribution (SED) for NGC 6557:

27 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) 12.132 +/- 0.006 mag 2.43E+14 2.24E-02 +/- 1.24E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 1
2 J (2MASS/CTIO) 12.926 +/- 0.108 mag 2.43E+14 1.08E-02 +/- 1.07E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 2
3 J 10.376 +/- 0.017 mag 2.40E+14 1.13E-01 +/- 1.78E-03 Jy Broad-band 81.8 x 52.4 arcsec integration area. 20032MASX.C.......: 3
4 J 10.276 +/- 0.018 mag 2.40E+14 1.23E-01 +/- 2.06E-03 Jy Broad-band 20032MASX.C.......: 4
5 J_14arcsec (2MASS) 11.540 +/- 0.005 mag 2.40E+14 3.85E-02 +/- 1.78E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 5
6 H 9.645 +/- 0.021 mag 1.82E+14 1.42E-01 +/- 2.77E-03 Jy Broad-band 81.8 x 52.4 arcsec integration area. 20032MASX.C.......: 6
7 H 9.570 +/- 0.021 mag 1.82E+14 1.52E-01 +/- 2.97E-03 Jy Broad-band 20032MASX.C.......: 7
8 H_14arcsec (2MASS) 10.780 +/- 0.006 mag 1.82E+14 4.99E-02 +/- 2.77E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 8
9 H (2MASS/CTIO) 11.346 +/- 0.01 mag 1.80E+14 2.96E-02 +/- 2.73E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 9
10 H (2MASS/CTIO) 12.024 +/- 0.084 mag 1.80E+14 1.59E-02 +/- 1.23E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 10
11 K_s (2MASS/CTIO) 11.066 +/- 0.008 mag 1.39E+14 2.50E-02 +/- 1.84E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 11
12 K_s (2MASS/CTIO) 11.483 +/- 0.063 mag 1.39E+14 1.70E-02 +/- 9.87E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 12
13 K_s_14arcsec (2MASS) 10.483 +/- 0.007 mag 1.38E+14 4.27E-02 +/- 2.76E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 13
14 K_s 9.359 +/- 0.025 mag 1.38E+14 1.20E-01 +/- 2.80E-03 Jy Broad-band 81.8 x 52.4 arcsec integration area. 20032MASX.C.......: 14
15 K_s 9.251 +/- 0.024 mag 1.38E+14 1.33E-01 +/- 2.97E-03 Jy Broad-band 20032MASX.C.......: 15
16 20 GHz (ATCA) 172 +/- 9 milliJy 1.99E+10 1.72E-01 +/- 9.00E-03 Jy Broad-band 2010MNRAS.402.2403M 16
17 8.4 GHz 202.4 ... milliJy 8.40E+09 2.02E-01 ... Jy Broad-band 2007ApJS..171...61H 17
18 8 GHz (ATCA) 246 +/- 12 milliJy 8.00E+09 2.46E-01 +/- 1.20E-02 Jy Broad-band 2010MNRAS.402.2403M 18
19 5 GHz (ATCA) 331 +/- 17 milliJy 5.00E+09 3.31E-01 +/- 1.70E-02 Jy Broad-band 2010MNRAS.402.2403M 19
20 5000 MHz 0.370 ... Jy 5.00E+09 3.70E-01 ... Jy Broad-band 1990PKS90.C...0000W 20
21 4.85 GHz 366 +/- 20 milliJy 4.85E+09 3.66E-01 +/- 2.00E-02 Jy Broad-band 1994ApJS...91..111W 21
22 4.85 GHz 358 +/- 19 milliJy 4.85E+09 3.58E-01 +/- 1.90E-02 Jy Broad-band 1994ApJS...90..173G 22
23 2700 MHz 0.390 ... Jy 2.70E+09 3.90E-01 ... Jy Broad-band 1990PKS90.C...0000W 23
24 843 MHz (SUMSS) 704.5 +/- 21.2 milliJy 8.43E+08 7.05E-01 +/- 2.12E-02 Jy Broad-band 2008SUMSS.2.1.....: 24
25 843 MHz 704.7 +/- 21.2 milliJy 8.43E+08 7.05E-01 +/- 2.12E-02 Jy Broad-band 2003MNRAS.342.1117M 25
26 408 MHz 1.04 +/- 0.05 Jy 4.08E+08 1.04E+00 +/- 5.00E-02 Jy Broad-band 1981MNRAS.194..693L 26
27 408 MHz 1.040 ... Jy 4.08E+08 1.04E+00 ... Jy Broad-band 1990PKS90.C...0000W 27


Detailed Information for Each Entry

 No. 1
Reference Code : 2006AJ....131.1163S
Freq. targeted : J (2MASS/CTIO)      
Measurement    :  12.132      mag                  = 2.24E-28 W m^-2^ Hz^-1^
Uncertainty    :  0.006       mag                  = 1.24E-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 : 12.926 mag = 1.08E-28 W m^-2^ Hz^-1^ Uncertainty : 0.108 mag = 1.07E-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 : 20032MASX.C.......: Freq. targeted : J Measurement : 10.376 mag = 1.13E-27 W m^-2^ Hz^-1^ Uncertainty : 0.017 mag = 1.78E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 81.8 x 52.4 arcsec integration area.
No. 4 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 10.276 mag = 1.23E-27 W m^-2^ Hz^-1^ Uncertainty : 0.018 mag = 2.06E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 5 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 11.540 mag = 3.85E-28 W m^-2^ Hz^-1^ Uncertainty : 0.005 mag = 1.78E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 6 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 9.645 mag = 1.42E-27 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 2.77E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 81.8 x 52.4 arcsec integration area.
No. 7 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 9.570 mag = 1.52E-27 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 2.97E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 8 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 10.780 mag = 4.99E-28 W m^-2^ Hz^-1^ Uncertainty : 0.006 mag = 2.77E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 9 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 11.346 mag = 2.96E-28 W m^-2^ Hz^-1^ Uncertainty : 0.01 mag = 2.73E-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. 10 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 12.024 mag = 1.59E-28 W m^-2^ Hz^-1^ Uncertainty : 0.084 mag = 1.23E-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. 11 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 11.066 mag = 2.50E-28 W m^-2^ Hz^-1^ Uncertainty : 0.008 mag = 1.84E-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. 12 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 11.483 mag = 1.70E-28 W m^-2^ Hz^-1^ Uncertainty : 0.063 mag = 9.87E-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 : Profile-fit; Poor quality
No. 13 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 10.483 mag = 4.27E-28 W m^-2^ Hz^-1^ Uncertainty : 0.007 mag = 2.76E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 14 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 9.359 mag = 1.20E-27 W m^-2^ Hz^-1^ Uncertainty : 0.025 mag = 2.80E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 81.8 x 52.4 arcsec integration area.
No. 15 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 9.251 mag = 1.33E-27 W m^-2^ Hz^-1^ Uncertainty : 0.024 mag = 2.97E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.67 -763500.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 16 Reference Code : 2010MNRAS.402.2403M Freq. targeted : 20 GHz (ATCA) Measurement : 172 milliJy = 1.72E-27 W m^-2^ Hz^-1^ Uncertainty : 9 milliJy = 9.00E-29 Significance : rms uncertainty Freq or Vel. : 19.904 GHz (OBS )= 1.99E+10 Hz Frequency mode : Broad-band measurement Coord. targeted: 18 21 25.15 -76 34 59.6 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 17 Reference Code : 2007ApJS..171...61H Freq. targeted : 8.4 GHz Measurement : 202.4 milliJy = 2.02E-27 W m^-2^ Hz^-1^ Uncertainty : milliJy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 8.4 GHz (OBS )= 8.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 18 21 24.61 -76 35 00.6 (J2000) Spatial mode : Flux integrated from map Notes : Averaged from previously published data Qualifiers :
No. 18 Reference Code : 2010MNRAS.402.2403M Freq. targeted : 8 GHz (ATCA) Measurement : 246 milliJy = 2.46E-27 W m^-2^ Hz^-1^ Uncertainty : 12 milliJy = 1.20E-28 Significance : rms uncertainty Freq or Vel. : 8 GHz (OBS )= 8.00E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 18 21 25.15 -76 34 59.6 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 19 Reference Code : 2010MNRAS.402.2403M Freq. targeted : 5 GHz (ATCA) Measurement : 331 milliJy = 3.31E-27 W m^-2^ Hz^-1^ Uncertainty : 17 milliJy = 1.70E-28 Significance : rms uncertainty Freq or Vel. : 5 GHz (OBS )= 5.00E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 18 21 25.15 -76 34 59.6 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 20 Reference Code : 1990PKS90.C...0000W Freq. targeted : 5000 MHz Measurement : 0.370 Jy = 3.70E-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: 18 14 13.5 -76 36 17 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 21 Reference Code : 1994ApJS...91..111W Freq. targeted : 4.85 GHz Measurement : 366 milliJy = 3.66E-27 W m^-2^ Hz^-1^ Uncertainty : 20 milliJy = 2.00E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 182123.8 -763505 (J2000) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 22 Reference Code : 1994ApJS...90..173G Freq. targeted : 4.85 GHz Measurement : 358 milliJy = 3.58E-27 W m^-2^ Hz^-1^ Uncertainty : 19 milliJy = 1.90E-28 Significance : rms noise Freq or Vel. : 4.85 GHz (OBS )= 4.85E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 181411.5 -763619 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 23 Reference Code : 1990PKS90.C...0000W Freq. targeted : 2700 MHz Measurement : 0.390 Jy = 3.90E-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: 18 14 13.5 -76 36 17 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :
No. 24 Reference Code : 2008SUMSS.2.1.....: Freq. targeted : 843 MHz (SUMSS) Measurement : 704.5 milliJy = 7.05E-27 W m^-2^ Hz^-1^ Uncertainty : 21.2 milliJy = 2.12E-28 Significance : uncertainty Freq or Vel. : 843 MHz (OBS )= 8.43E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.72 -763459.3 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 25 Reference Code : 2003MNRAS.342.1117M Freq. targeted : 843 MHz Measurement : 704.7 milliJy = 7.05E-27 W m^-2^ Hz^-1^ Uncertainty : 21.2 milliJy = 2.12E-28 Significance : uncertainty Freq or Vel. : 843 MHz (OBS )= 8.43E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 182124.72 -763459.3 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 26 Reference Code : 1981MNRAS.194..693L Freq. targeted : 408 MHz Measurement : 1.04 Jy = 1.04E-26 W m^-2^ Hz^-1^ Uncertainty : 0.05 Jy = 5.00E-28 Significance : rms noise Freq or Vel. : 408 MHz (OBS )= 4.08E+08 Hz Frequency mode : Broad-band measurement Coord. targeted: 181412.0 -763613 (B1950) Spatial mode : Modelled datum Notes : From new raw data; Corrected for contaminating sources Qualifiers :
No. 27 Reference Code : 1990PKS90.C...0000W Freq. targeted : 408 MHz Measurement : 1.040 Jy = 1.04E-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: 18 14 13.5 -76 36 17 (B1950) Spatial mode : Integrated from scans Notes : Homogenized from new and previously published data Qualifiers :

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