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Date and Time of the Query: 2019-06-19 T08:14:07 PDT
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Spectral Energy Distribution (SED) for NGC 6657:

25 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 m_p 14.2 +/- 0.4 mag 6.81E+14 8.90E-03 +/- 3.96E-03 Jy Broad-band 1966CGCG3.C...0000Z 1
2 J (2MASS/FLWO) 12.57 +/- 0.026 mag 2.43E+14 1.49E-02 +/- 3.58E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 2
3 J (2MASS/FLWO) 12.549 +/- 0.015 mag 2.43E+14 1.52E-02 +/- 2.11E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 3
4 J 11.265 +/- 0.018 mag 2.40E+14 4.97E-02 +/- 8.30E-04 Jy Broad-band 51.4 x 35.0 arcsec integration area. 20032MASX.C.......: 4
5 J 11.173 +/- 0.023 mag 2.40E+14 5.40E-02 +/- 1.16E-03 Jy Broad-band 20032MASX.C.......: 5
6 J_14arcsec (2MASS) 12.067 +/- 0.007 mag 2.40E+14 2.37E-02 +/- 1.53E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 6
7 H 10.415 +/- 0.021 mag 1.82E+14 6.99E-02 +/- 1.36E-03 Jy Broad-band 20032MASX.C.......: 7
8 H 10.542 +/- 0.022 mag 1.82E+14 6.22E-02 +/- 1.27E-03 Jy Broad-band 51.4 x 35.0 arcsec integration area. 20032MASX.C.......: 8
9 H_14arcsec (2MASS) 11.330 +/- 0.007 mag 1.82E+14 3.01E-02 +/- 1.95E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 9
10 H (2MASS/FLWO) 11.777 +/- 0.024 mag 1.80E+14 1.99E-02 +/- 4.41E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 10
11 H (2MASS/FLWO) 11.953 +/- 0.025 mag 1.80E+14 1.69E-02 +/- 3.90E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 11
12 K_s (2MASS/FLWO) 11.565 +/- 0.026 mag 1.39E+14 1.58E-02 +/- 3.78E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 12
13 K_s (2MASS/FLWO) 11.456 +/- 0.015 mag 1.39E+14 1.74E-02 +/- 2.41E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 13
14 K_s_14arcsec (2MASS) 11.000 +/- 0.011 mag 1.38E+14 2.65E-02 +/- 2.70E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 14
15 K_s 10.238 +/- 0.034 mag 1.38E+14 5.36E-02 +/- 1.70E-03 Jy Broad-band 51.4 x 35.0 arcsec integration area. 20032MASX.C.......: 15
16 K_s 10.133 +/- 0.031 mag 1.38E+14 5.90E-02 +/- 1.71E-03 Jy Broad-band 20032MASX.C.......: 16
17 12 microns (IRAS) ... <0.250 Jy 2.50E+13 < 2.50E-01 Jy Broad-band 1988IRASP.C2..0000: 17
18 25 microns (IRAS) ... <0.250 Jy 1.20E+13 < 2.50E-01 Jy Broad-band 1988IRASP.C2..0000: 18
19 60 microns (IRAS) 0.703 +/- 7 % Jy 5.00E+12 7.03E-01 +/- 4.92E-02 Jy Broad-band IRAS quality flag = 3 1988IRASP.C2..0000: 19
20 100 microns (IRAS) 2.218 +/- 7 % Jy 3.00E+12 2.22E+00 +/- 1.55E-01 Jy Broad-band IRAS quality flag = 3 1988IRASP.C2..0000: 20
21 2380 MHz 12. +/- 3. milliJy 2.38E+09 1.20E-02 +/- 3.00E-03 Jy Broad-band 1978ApJS...36...53D 21
22 HI 21 cm line 1.02 ... Jy km s^-1^ 1.42E+09 4.72E+03 ... Jy-Hz Line 2005ApJS..160..149S 22
23 HI 21 cm line 1.20 +/- 0.20 Jy km s^-1^ 1.42E+09 5.55E+03 +/- 9.26E+02 Jy-Hz Line Self-absorption corrected line flux 2005ApJS..160..149S 23
24 HI 21 cm line 1.10 ... Jy km s^-1^ 1.42E+09 5.09E+03 ... Jy-Hz Line Corrected line flux 2005ApJS..160..149S 24
25 1.4 GHz (VLA) 9.3 ... milliJy 1.40E+09 9.30E-03 ... Jy Broad-band 2002AJ....124..675C 25


Detailed Information for Each Entry

 No. 1
Reference Code : 1966CGCG3.C...0000Z
Freq. targeted : m_p                 
Measurement    :  14.2        mag                  = 8.90E-29 W m^-2^ Hz^-1^
Uncertainty    :  0.4         mag                  = 3.96E-29
Significance   : rms noise
Freq or Vel.   : 4400         A            (OBS   )= 6.81E+14 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 183112.0        +340000. (B1950)
Spatial mode   : Estimated by eye
Notes          : From new raw data
Qualifiers     :                                         

No. 2 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 12.57 mag = 1.49E-28 W m^-2^ Hz^-1^ Uncertainty : 0.026 mag = 3.58E-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 : Profile-fit; Poor quality
No. 3 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 12.549 mag = 1.52E-28 W m^-2^ Hz^-1^ Uncertainty : 0.015 mag = 2.11E-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. 4 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.265 mag = 4.97E-28 W m^-2^ Hz^-1^ Uncertainty : 0.018 mag = 8.30E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 51.4 x 35.0 arcsec integration area.
No. 5 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.173 mag = 5.40E-28 W m^-2^ Hz^-1^ Uncertainty : 0.023 mag = 1.16E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 6 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 12.067 mag = 2.37E-28 W m^-2^ Hz^-1^ Uncertainty : 0.007 mag = 1.53E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 7 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 10.415 mag = 6.99E-28 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 1.36E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 8 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 10.542 mag = 6.22E-28 W m^-2^ Hz^-1^ Uncertainty : 0.022 mag = 1.27E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 51.4 x 35.0 arcsec integration area.
No. 9 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 11.330 mag = 3.01E-28 W m^-2^ Hz^-1^ Uncertainty : 0.007 mag = 1.95E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 10 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 11.777 mag = 1.99E-28 W m^-2^ Hz^-1^ Uncertainty : 0.024 mag = 4.41E-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. 11 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 11.953 mag = 1.69E-28 W m^-2^ Hz^-1^ Uncertainty : 0.025 mag = 3.90E-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 : Profile-fit; Poor quality
No. 12 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 11.565 mag = 1.58E-28 W m^-2^ Hz^-1^ Uncertainty : 0.026 mag = 3.78E-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 : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 11.456 mag = 1.74E-28 W m^-2^ Hz^-1^ Uncertainty : 0.015 mag = 2.41E-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. 14 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 11.000 mag = 2.65E-28 W m^-2^ Hz^-1^ Uncertainty : 0.011 mag = 2.70E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 15 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.238 mag = 5.36E-28 W m^-2^ Hz^-1^ Uncertainty : 0.034 mag = 1.70E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 51.4 x 35.0 arcsec integration area.
No. 16 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.133 mag = 5.90E-28 W m^-2^ Hz^-1^ Uncertainty : 0.031 mag = 1.71E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 183301.47 +340337.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 17 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 12 microns (IRAS) Measurement : <0.250 Jy < 2.50E-27 W m^-2^ Hz^-1^ Uncertainty : Significance : 3 sigma Freq or Vel. : 12 microns (OBS )= 2.50E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 183112.8 +340120 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers :
No. 18 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 25 microns (IRAS) Measurement : <0.250 Jy < 2.50E-27 W m^-2^ Hz^-1^ Uncertainty : Significance : 3 sigma Freq or Vel. : 25 microns (OBS )= 1.20E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 183112.8 +340120 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers :
No. 19 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 60 microns (IRAS) Measurement : 0.703 Jy = 7.03E-27 W m^-2^ Hz^-1^ Uncertainty : 7 % Jy = 4.92E-28 Significance : uncertainty Freq or Vel. : 60 microns (OBS )= 5.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 183112.8 +340120 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 20 Reference Code : 1988IRASP.C2..0000: Freq. targeted : 100 microns (IRAS) Measurement : 2.218 Jy = 2.22E-26 W m^-2^ Hz^-1^ Uncertainty : 7 % Jy = 1.55E-27 Significance : uncertainty Freq or Vel. : 100 microns (OBS )= 3.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 183112.8 +340120 (B1950) Spatial mode : Integrated from scans Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 21 Reference Code : 1978ApJS...36...53D Freq. targeted : 2380 MHz Measurement : 12. milliJy = 1.20E-28 W m^-2^ Hz^-1^ Uncertainty : 3. milliJy = 3.00E-29 Significance : rms uncertainty Freq or Vel. : 2380 MHz (OBS )= 2.38E+09 Hz Frequency mode : Broad-band measurement; peak value reported Coord. targeted: Spatial mode : Peak flux Notes : From new raw data Qualifiers :
No. 22 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 1.02 Jy km s^-1^ = 4.72E-23 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 6991 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 18 33 01.3 +34 03 37 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 23 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 1.20 Jy km s^-1^ = 5.55E-23 W m^-2^ Uncertainty : 0.20 Jy km s^-1^ = 9.26E-24 Significance : uncertainty Freq or Vel. : 6991 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 18 33 01.3 +34 03 37 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Self-absorption corrected line flux
No. 24 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 1.10 Jy km s^-1^ = 5.09E-23 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 6991 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 18 33 01.3 +34 03 37 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected line flux
No. 25 Reference Code : 2002AJ....124..675C Freq. targeted : 1.4 GHz (VLA) Measurement : 9.3 milliJy = 9.30E-29 W m^-2^ Hz^-1^ Uncertainty : milliJy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 1.4 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux integrated from map Notes : Averaged from previously published data Qualifiers :

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