NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-21 T05:41:48 PDT
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Spectral Energy Distribution (SED) for NGC 7820:

31 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 FUV (GALEX) AB 19.9673 +/- 0.241064 mag 1.95E+15 3.74E-05 +/- 8.31E-06 Jy Broad-band Kron flux in elliptical aperture 2012GASC..C...0000S 1
2 FUV (GALEX) AB 21.1073 +/- 0.353995 mag 1.95E+15 1.31E-05 +/- 4.27E-06 Jy Broad-band Flux in 7.5 arcsec diameter aperture 2012GASC..C...0000S 2
3 NUV (GALEX) AB 18.1645 +/- 0.0558476 mag 1.29E+15 1.97E-04 +/- 1.01E-05 Jy Broad-band Kron flux in elliptical aperture 2012GASC..C...0000S 3
4 NUV (GALEX) AB 19.8451 +/- 0.120693 mag 1.29E+15 4.19E-05 +/- 4.65E-06 Jy Broad-band Flux in 7.5 arcsec diameter aperture 2012GASC..C...0000S 4
5 m_p 13.9 +/- 0.4 mag 6.81E+14 1.17E-02 +/- 5.23E-03 Jy Broad-band 1965CGCG5.C...0000Z 5
6 B (m_B) 13.87 +/- 0.19 mag 6.81E+14 1.21E-02 +/- 2.31E-03 Jy Broad-band 1991RC3.9.C...0000d 6
7 B (m_B^0) 13.44 ... mag 6.81E+14 1.79E-02 ... Jy Broad-band 1991RC3.9.C...0000d 7
8 J (2MASS/CTIO) ... >11.644 mag 2.43E+14 < 3.51E-02 Jy Broad-band 2006AJ....131.1163S 8
9 J (2MASS/CTIO) 11.943 +/- 0.069 mag 2.43E+14 2.66E-02 +/- 1.69E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 9
10 J (2MASS/CTIO) 11.43 +/- 0.003 mag 2.43E+14 4.27E-02 +/- 1.18E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 10
11 J 10.538 +/- 0.013 mag 2.40E+14 9.70E-02 +/- 1.17E-03 Jy Broad-band 20032MASX.C.......: 11
12 J_14arcsec (2MASS) 11.106 +/- 0.004 mag 2.40E+14 5.75E-02 +/- 2.12E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 12
13 J 10.586 +/- 0.012 mag 2.40E+14 9.28E-02 +/- 1.03E-03 Jy Broad-band 65.2 x 22.2 arcsec integration area. 20032MASX.C.......: 13
14 H_14arcsec (2MASS) 10.394 +/- 0.005 mag 1.82E+14 7.12E-02 +/- 3.29E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 14
15 H 9.871 +/- 0.016 mag 1.82E+14 1.15E-01 +/- 1.71E-03 Jy Broad-band 20032MASX.C.......: 15
16 H 9.899 +/- 0.016 mag 1.82E+14 1.12E-01 +/- 1.67E-03 Jy Broad-band 65.2 x 22.2 arcsec integration area. 20032MASX.C.......: 16
17 H (2MASS/CTIO) 12.865 +/- 0.056 mag 1.80E+14 7.32E-03 +/- 3.77E-04 Jy Broad-band Profile-fit; Poor quality; Confusion 2006AJ....131.1163S 17
18 H (2MASS/CTIO) 10.806 +/- 0.008 mag 1.80E+14 4.87E-02 +/- 3.59E-04 Jy Broad-band 4" aperture; Confusion 2006AJ....131.1163S 18
19 H (2MASS/CTIO) 10.714 +/- 0.004 mag 1.80E+14 5.31E-02 +/- 1.95E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 19
20 H (2MASS/CTIO) 11.262 +/- 0.09 mag 1.80E+14 3.20E-02 +/- 2.65E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 20
21 K_s (2MASS/CTIO) 10.73 +/- 0.047 mag 1.39E+14 3.40E-02 +/- 1.47E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 21
22 K_s (2MASS/CTIO) 10.438 +/- 0.003 mag 1.39E+14 4.45E-02 +/- 1.23E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 22
23 K_s (2MASS/CTIO) ... >10.68 mag 1.39E+14 < 3.56E-02 Jy Broad-band 2006AJ....131.1163S 23
24 K_s 9.653 +/- 0.021 mag 1.38E+14 9.18E-02 +/- 1.79E-03 Jy Broad-band 65.2 x 22.2 arcsec integration area. 20032MASX.C.......: 24
25 K_s_14arcsec (2MASS) 10.135 +/- 0.006 mag 1.38E+14 5.89E-02 +/- 3.26E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 25
26 K_s 9.609 +/- 0.021 mag 1.38E+14 9.56E-02 +/- 1.87E-03 Jy Broad-band 20032MASX.C.......: 26
27 12 microns (IRAS) ... <0.049 Jy 2.50E+13 < 4.90E-02 Jy Broad-band 1994PrivC.U..J....K 27
28 25 microns (IRAS) ... <0.039 Jy 1.20E+13 < 3.90E-02 Jy Broad-band 1994PrivC.U..J....K 28
29 60 microns (IRAS) ... <0.034 Jy 5.00E+12 < 3.40E-02 Jy Broad-band 1994PrivC.U..J....K 29
30 100 microns (IRAS) ... <0.119 Jy 3.00E+12 < 1.19E-01 Jy Broad-band 1994PrivC.U..J....K 30
31 2380 MHz 1. +/- 4. milliJy 2.38E+09 1.00E-03 +/- 4.00E-03 Jy Broad-band 1978ApJS...36...53D 31


Detailed Information for Each Entry

 No. 1
Reference Code : 2012GASC..C...0000S
Freq. targeted : FUV (GALEX) AB      
Measurement    :  19.9673     mag                  = 3.74E-31 W m^-2^ Hz^-1^
Uncertainty    :  0.241064    mag                  = 8.31E-32
Significance   : uncertainty
Freq or Vel.   : 1538.6       A            (OBS   )= 1.95E+15 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 1.1284712218533 5.2000402183615 (J2000)
Spatial mode   : Flux integrated from map
Notes          : From new raw data
Qualifiers     : Kron flux in elliptical aperture        

No. 2 Reference Code : 2012GASC..C...0000S Freq. targeted : FUV (GALEX) AB Measurement : 21.1073 mag = 1.31E-31 W m^-2^ Hz^-1^ Uncertainty : 0.353995 mag = 4.27E-32 Significance : uncertainty Freq or Vel. : 1538.6 A (OBS )= 1.95E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 1.1284712218533 5.2000402183615 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : Flux in 7.5 arcsec diameter aperture
No. 3 Reference Code : 2012GASC..C...0000S Freq. targeted : NUV (GALEX) AB Measurement : 18.1645 mag = 1.97E-30 W m^-2^ Hz^-1^ Uncertainty : 0.0558476 mag = 1.01E-31 Significance : uncertainty Freq or Vel. : 2315.7 A (OBS )= 1.29E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 1.1284712218533 5.2000402183615 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Kron flux in elliptical aperture
No. 4 Reference Code : 2012GASC..C...0000S Freq. targeted : NUV (GALEX) AB Measurement : 19.8451 mag = 4.19E-31 W m^-2^ Hz^-1^ Uncertainty : 0.120693 mag = 4.65E-32 Significance : uncertainty Freq or Vel. : 2315.7 A (OBS )= 1.29E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 1.1284712218533 5.2000402183615 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : Flux in 7.5 arcsec diameter aperture
No. 5 Reference Code : 1965CGCG5.C...0000Z Freq. targeted : m_p Measurement : 13.9 mag = 1.17E-28 W m^-2^ Hz^-1^ Uncertainty : 0.4 mag = 5.23E-29 Significance : rms noise Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000200.0 +045500. (B1950) Spatial mode : Estimated by eye Notes : From new raw data Qualifiers :
No. 6 Reference Code : 1991RC3.9.C...0000d Freq. targeted : B (m_B) Measurement : 13.87 mag = 1.21E-28 W m^-2^ Hz^-1^ Uncertainty : 0.19 mag = 2.31E-29 Significance : rms uncertainty Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000156.8 +045513 (B1950) Spatial mode : Multiple methods Notes : Homogenized from new and previously published data; Standard Johnson UBVRI filters assumed Qualifiers :
No. 7 Reference Code : 1991RC3.9.C...0000d Freq. targeted : B (m_B^0) Measurement : 13.44 mag = 1.79E-28 W m^-2^ Hz^-1^ Uncertainty : mag = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000156.8 +045513 (B1950) Spatial mode : Multiple methods Notes : Homogenized from new and previously published data; Extinction-corrected for internal and Milky Way and K-correction applied; Standard Johnson UBVRI filters assumed Qualifiers :
No. 8 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : >11.644 mag < 3.51E-28 W m^-2^ Hz^-1^ Uncertainty : Significance : 95% confidence 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 :
No. 9 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 11.943 mag = 2.66E-28 W m^-2^ Hz^-1^ Uncertainty : 0.069 mag = 1.69E-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. 10 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 11.43 mag = 4.27E-28 W m^-2^ Hz^-1^ Uncertainty : 0.003 mag = 1.18E-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. 11 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 10.538 mag = 9.70E-28 W m^-2^ Hz^-1^ Uncertainty : 0.013 mag = 1.17E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 12 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 11.106 mag = 5.75E-28 W m^-2^ Hz^-1^ Uncertainty : 0.004 mag = 2.12E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 13 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 10.586 mag = 9.28E-28 W m^-2^ Hz^-1^ Uncertainty : 0.012 mag = 1.03E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 65.2 x 22.2 arcsec integration area.
No. 14 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 10.394 mag = 7.12E-28 W m^-2^ Hz^-1^ Uncertainty : 0.005 mag = 3.29E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (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 : H Measurement : 9.871 mag = 1.15E-27 W m^-2^ Hz^-1^ Uncertainty : 0.016 mag = 1.71E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 16 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 9.899 mag = 1.12E-27 W m^-2^ Hz^-1^ Uncertainty : 0.016 mag = 1.67E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 65.2 x 22.2 arcsec integration area.
No. 17 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 12.865 mag = 7.32E-29 W m^-2^ Hz^-1^ Uncertainty : 0.056 mag = 3.77E-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; Confusion
No. 18 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 10.806 mag = 4.87E-28 W m^-2^ Hz^-1^ Uncertainty : 0.008 mag = 3.59E-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; Confusion
No. 19 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 10.714 mag = 5.31E-28 W m^-2^ Hz^-1^ Uncertainty : 0.004 mag = 1.95E-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. 20 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 11.262 mag = 3.20E-28 W m^-2^ Hz^-1^ Uncertainty : 0.09 mag = 2.65E-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. 21 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 10.73 mag = 3.40E-28 W m^-2^ Hz^-1^ Uncertainty : 0.047 mag = 1.47E-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. 22 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 10.438 mag = 4.45E-28 W m^-2^ Hz^-1^ Uncertainty : 0.003 mag = 1.23E-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. 23 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : >10.68 mag < 3.56E-28 W m^-2^ Hz^-1^ Uncertainty : Significance : 95% confidence 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 :
No. 24 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 9.653 mag = 9.18E-28 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 1.79E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 65.2 x 22.2 arcsec integration area.
No. 25 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 10.135 mag = 5.89E-28 W m^-2^ Hz^-1^ Uncertainty : 0.006 mag = 3.26E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 26 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 9.609 mag = 9.56E-28 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 1.87E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000430.79 +051201.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 27 Reference Code : 1994PrivC.U..J....K Freq. targeted : 12 microns (IRAS) Measurement : <0.049 Jy < 4.90E-28 W m^-2^ Hz^-1^ Uncertainty : Significance : 1 sigma Freq or Vel. : 12 microns (OBS )= 2.50E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 000157. +045513 (B1950) Spatial mode : From fitting to map Notes : From reprocessed raw data Qualifiers :
No. 28 Reference Code : 1994PrivC.U..J....K Freq. targeted : 25 microns (IRAS) Measurement : <0.039 Jy < 3.90E-28 W m^-2^ Hz^-1^ Uncertainty : Significance : 1 sigma Freq or Vel. : 25 microns (OBS )= 1.20E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 000157. +045513 (B1950) Spatial mode : From fitting to map Notes : From reprocessed raw data Qualifiers :
No. 29 Reference Code : 1994PrivC.U..J....K Freq. targeted : 60 microns (IRAS) Measurement : <0.034 Jy < 3.40E-28 W m^-2^ Hz^-1^ Uncertainty : Significance : 1 sigma Freq or Vel. : 60 microns (OBS )= 5.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 000157. +045513 (B1950) Spatial mode : From fitting to map Notes : From reprocessed raw data Qualifiers :
No. 30 Reference Code : 1994PrivC.U..J....K Freq. targeted : 100 microns (IRAS) Measurement : <0.119 Jy < 1.19E-27 W m^-2^ Hz^-1^ Uncertainty : Significance : 1 sigma Freq or Vel. : 100 microns (OBS )= 3.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 000157. +045513 (B1950) Spatial mode : From fitting to map Notes : From reprocessed raw data Qualifiers :
No. 31 Reference Code : 1978ApJS...36...53D Freq. targeted : 2380 MHz Measurement : 1. milliJy = 1.00E-29 W m^-2^ Hz^-1^ Uncertainty : 4. milliJy = 4.00E-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 :

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