NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-20 T10:23:50 PDT
Help | Comment | NED Home

Spectral Energy Distribution (SED) for NGC 6831:

17 Data Points
 Click to zoom in at a position of interest (uses a separate window). 
Select zoom factor:  

                Postscript version of the SED plot






  New options   Format tabular data as:


Photometric Data --- Published and Homogenized [Frequency, Flux Density] Units

  Published UnitsHomogenized Units [Frequency, Flux Density]  
No.Observed PassbandMeasurementUncertaintyUnitsFreq (Hz)MeasurementUncertaintyUnitsModeAperture/QualifiersReference CodeNo.
1 B (m_B) 14.30 +/- 0.30 mag 6.81E+14 8.12E-03 +/- 2.58E-03 Jy Broad-band 1991RC3.9.C...0000d 1
2 m_p 14.7 +/- 0.4 mag 6.81E+14 5.62E-03 +/- 2.50E-03 Jy Broad-band 1968CGCG4.C...0000Z 2
3 J (2MASS/FLWO) 12.334 +/- 0.005 mag 2.43E+14 1.86E-02 +/- 8.55E-05 Jy Broad-band 4" aperture 2006AJ....131.1163S 3
4 J (2MASS/FLWO) 12.503 +/- 0.034 mag 2.43E+14 1.59E-02 +/- 4.98E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 4
5 J 11.021 +/- 0.022 mag 2.40E+14 6.22E-02 +/- 1.27E-03 Jy Broad-band 50.0 x 49.0 arcsec integration area. 20032MASX.C.......: 5
6 J 10.839 +/- 0.022 mag 2.40E+14 7.35E-02 +/- 1.50E-03 Jy Broad-band 20032MASX.C.......: 6
7 J_14arcsec (2MASS) 11.889 +/- 0.008 mag 2.40E+14 2.79E-02 +/- 2.07E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 7
8 H 10.125 +/- 0.021 mag 1.82E+14 9.13E-02 +/- 1.78E-03 Jy Broad-band 20032MASX.C.......: 8
9 H_14arcsec (2MASS) 11.164 +/- 0.007 mag 1.82E+14 3.51E-02 +/- 2.27E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 9
10 H 10.323 +/- 0.023 mag 1.82E+14 7.61E-02 +/- 1.63E-03 Jy Broad-band 50.0 x 49.0 arcsec integration area. 20032MASX.C.......: 10
11 H (2MASS/FLWO) 11.58 +/- 0.01 mag 1.80E+14 2.39E-02 +/- 2.20E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 11
12 H (2MASS/FLWO) 11.602 +/- 0.032 mag 1.80E+14 2.34E-02 +/- 6.90E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 12
13 K_s (2MASS/FLWO) 11.353 +/- 0.032 mag 1.39E+14 1.92E-02 +/- 5.65E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 13
14 K_s (2MASS/FLWO) 11.279 +/- 0.013 mag 1.39E+14 2.05E-02 +/- 2.46E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 14
15 K_s 9.899 +/- 0.040 mag 1.38E+14 7.32E-02 +/- 2.75E-03 Jy Broad-band 20032MASX.C.......: 15
16 K_s 10.053 +/- 0.044 mag 1.38E+14 6.35E-02 +/- 2.63E-03 Jy Broad-band 50.0 x 49.0 arcsec integration area. 20032MASX.C.......: 16
17 K_s_14arcsec (2MASS) 10.868 +/- 0.012 mag 1.38E+14 3.00E-02 +/- 3.33E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 17


Detailed Information for Each Entry

 No. 1
Reference Code : 1991RC3.9.C...0000d
Freq. targeted : B (m_B)             
Measurement    :  14.30       mag                  = 8.12E-29 W m^-2^ Hz^-1^
Uncertainty    :  0.30        mag                  = 2.58E-29
Significance   : rms uncertainty
Freq or Vel.   : 4400         A            (OBS   )= 6.81E+14 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 1947.1          +5946 (B1950)
Spatial mode   : Multiple methods
Notes          : Homogenized from new and previously published data; Standard
                 Johnson UBVRI filters assumed
Qualifiers     :                                         

No. 2 Reference Code : 1968CGCG4.C...0000Z Freq. targeted : m_p Measurement : 14.7 mag = 5.62E-29 W m^-2^ Hz^-1^ Uncertainty : 0.4 mag = 2.50E-29 Significance : rms noise Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194706.0 +594600. (B1950) Spatial mode : Estimated by eye Notes : From new raw data Qualifiers :
No. 3 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 12.334 mag = 1.86E-28 W m^-2^ Hz^-1^ Uncertainty : 0.005 mag = 8.55E-31 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 : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 12.503 mag = 1.59E-28 W m^-2^ Hz^-1^ Uncertainty : 0.034 mag = 4.98E-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. 5 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.021 mag = 6.22E-28 W m^-2^ Hz^-1^ Uncertainty : 0.022 mag = 1.27E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 50.0 x 49.0 arcsec integration area.
No. 6 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 10.839 mag = 7.35E-28 W m^-2^ Hz^-1^ Uncertainty : 0.022 mag = 1.50E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 7 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 11.889 mag = 2.79E-28 W m^-2^ Hz^-1^ Uncertainty : 0.008 mag = 2.07E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 8 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 10.125 mag = 9.13E-28 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 1.78E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 9 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 11.164 mag = 3.51E-28 W m^-2^ Hz^-1^ Uncertainty : 0.007 mag = 2.27E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 10 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 10.323 mag = 7.60E-28 W m^-2^ Hz^-1^ Uncertainty : 0.023 mag = 1.63E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 50.0 x 49.0 arcsec integration area.
No. 11 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 11.58 mag = 2.39E-28 W m^-2^ Hz^-1^ Uncertainty : 0.01 mag = 2.20E-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. 12 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 11.602 mag = 2.34E-28 W m^-2^ Hz^-1^ Uncertainty : 0.032 mag = 6.90E-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. 13 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 11.353 mag = 1.92E-28 W m^-2^ Hz^-1^ Uncertainty : 0.032 mag = 5.65E-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
No. 14 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 11.279 mag = 2.05E-28 W m^-2^ Hz^-1^ Uncertainty : 0.013 mag = 2.46E-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. 15 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 9.899 mag = 7.32E-28 W m^-2^ Hz^-1^ Uncertainty : 0.040 mag = 2.75E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 16 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.053 mag = 6.35E-28 W m^-2^ Hz^-1^ Uncertainty : 0.044 mag = 2.63E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 50.0 x 49.0 arcsec integration area.
No. 17 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 10.868 mag = 3.00E-28 W m^-2^ Hz^-1^ Uncertainty : 0.012 mag = 3.33E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 194757.32 +595333.2 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.

Back to NED Home