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Date and Time of the Query: 2019-06-20 T09:37:10 PDT
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Spectral Energy Distribution (SED) for NGC 7818:

26 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 17.4850 +/- 0.0559444 mag 1.95E+15 3.68E-04 +/- 1.90E-05 Jy Broad-band Kron flux in elliptical aperture 2012GASC..C...0000S 1
2 FUV (GALEX) AB 23.2540 +/- 1.12508 mag 1.95E+15 1.81E-06 +/- 1.88E-06 Jy Broad-band Flux in 7.5 arcsec diameter aperture 2012GASC..C...0000S 2
3 NUV (GALEX) AB 17.0935 +/- 0.0292655 mag 1.29E+15 5.28E-04 +/- 1.42E-05 Jy Broad-band Kron flux in elliptical aperture 2012GASC..C...0000S 3
4 NUV (GALEX) AB 20.9816 +/- 0.186868 mag 1.29E+15 1.47E-05 +/- 2.53E-06 Jy Broad-band Flux in 7.5 arcsec diameter aperture 2012GASC..C...0000S 4
5 m_p 15.1 +/- 0.4 mag 6.81E+14 3.89E-03 +/- 1.73E-03 Jy Broad-band 1965CGCG5.C...0000Z 5
6 B (m_B) 14.67 +/- 0.22 mag 6.81E+14 5.77E-03 +/- 1.30E-03 Jy Broad-band 1991RC3.9.C...0000d 6
7 J (2MASS/FLWO) 14.128 +/- 0.018 mag 2.43E+14 3.56E-03 +/- 5.90E-05 Jy Broad-band 4" aperture 2006AJ....131.1163S 7
8 J (2MASS/FLWO) 14.65 +/- 0.086 mag 2.43E+14 2.20E-03 +/- 1.74E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 8
9 J_14arcsec (2MASS) 13.276 +/- 0.024 mag 2.40E+14 7.79E-03 +/- 1.74E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 9
10 J 12.264 +/- 0.037 mag 2.40E+14 1.98E-02 +/- 6.86E-04 Jy Broad-band 41.2 x 29.7 arcsec integration area. 20032MASX.C.......: 10
11 J 12.117 +/- 0.046 mag 2.40E+14 2.27E-02 +/- 9.80E-04 Jy Broad-band 20032MASX.C.......: 11
12 H 11.616 +/- 0.055 mag 1.82E+14 2.31E-02 +/- 1.20E-03 Jy Broad-band 41.2 x 29.7 arcsec integration area. 20032MASX.C.......: 12
13 H_14arcsec (2MASS) 12.658 +/- 0.033 mag 1.82E+14 8.85E-03 +/- 2.73E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 13
14 H 11.499 +/- 0.066 mag 1.82E+14 2.57E-02 +/- 1.61E-03 Jy Broad-band 20032MASX.C.......: 14
15 H (2MASS/FLWO) 14.368 +/- 0.135 mag 1.80E+14 1.83E-03 +/- 2.28E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 15
16 H (2MASS/FLWO) 13.394 +/- 0.028 mag 1.80E+14 4.49E-03 +/- 1.16E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 16
17 K_s (2MASS/FLWO) 13.163 +/- 0.063 mag 1.39E+14 3.62E-03 +/- 2.10E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 17
18 K_s (2MASS/FLWO) 14.066 +/- 0.125 mag 1.39E+14 1.58E-03 +/- 1.81E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 18
19 K_s_14arcsec (2MASS) 12.363 +/- 0.039 mag 1.38E+14 7.56E-03 +/- 2.77E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 19
20 K_s 11.079 +/- 0.069 mag 1.38E+14 2.47E-02 +/- 1.62E-03 Jy Broad-band 20032MASX.C.......: 20
21 K_s 11.362 +/- 0.075 mag 1.38E+14 1.90E-02 +/- 1.36E-03 Jy Broad-band 41.2 x 29.7 arcsec integration area. 20032MASX.C.......: 21
22 HI 21 cm line 4.67 ... Jy km s^-1^ 1.42E+09 2.17E+04 ... Jy-Hz Line 2005ApJS..160..149S 22
23 HI 21 cm line 5.42 +/- 0.54 Jy km s^-1^ 1.42E+09 2.51E+04 +/- 2.51E+03 Jy-Hz Line Self-absorption corrected line flux 2005ApJS..160..149S 23
24 HI 21 cm line 5.42 ... Jy km s^-1^ 1.42E+09 2.51E+04 ... Jy-Hz Line Corrected line flux 2005ApJS..160..149S 24
25 HI (21 cm line) 5.0 +/- 20 % Jy km s^-1^ 1.42E+09 2.31E+04 +/- 4.62E+03 Jy-Hz Line 1993ApJS...88..383L 25
26 1.4GHz 3.1 +/- 0.6 milliJy 1.40E+09 3.10E-03 +/- 6.00E-04 Jy Broad-band 1998AJ....115.1693C 26


Detailed Information for Each Entry

 No. 1
Reference Code : 2012GASC..C...0000S
Freq. targeted : FUV (GALEX) AB      
Measurement    :  17.4850     mag                  = 3.68E-30 W m^-2^ Hz^-1^
Uncertainty    :  0.0559444   mag                  = 1.90E-31
Significance   : uncertainty
Freq or Vel.   : 1538.6       A            (OBS   )= 1.95E+15 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 1.0370590170583 7.3796772268328 (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 : 23.2540 mag = 1.81E-32 W m^-2^ Hz^-1^ Uncertainty : 1.12508 mag = 1.88E-32 Significance : uncertainty Freq or Vel. : 1538.6 A (OBS )= 1.95E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 1.0370590170583 7.3796772268328 (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 : 17.0935 mag = 5.28E-30 W m^-2^ Hz^-1^ Uncertainty : 0.0292655 mag = 1.42E-31 Significance : uncertainty Freq or Vel. : 2315.7 A (OBS )= 1.29E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 1.0370590170583 7.3796772268328 (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 : 20.9816 mag = 1.47E-31 W m^-2^ Hz^-1^ Uncertainty : 0.186868 mag = 2.53E-32 Significance : uncertainty Freq or Vel. : 2315.7 A (OBS )= 1.29E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 1.0370590170583 7.3796772268328 (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 : 15.1 mag = 3.89E-29 W m^-2^ Hz^-1^ Uncertainty : 0.4 mag = 1.73E-29 Significance : rms noise Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000136.0 +070500. (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 : 14.67 mag = 5.77E-29 W m^-2^ Hz^-1^ Uncertainty : 0.22 mag = 1.30E-29 Significance : rms uncertainty Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 0001.6 +0705 (B1950) Spatial mode : Multiple methods Notes : Homogenized from new and previously published data; Standard Johnson UBVRI filters assumed Qualifiers :
No. 7 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 14.128 mag = 3.56E-29 W m^-2^ Hz^-1^ Uncertainty : 0.018 mag = 5.90E-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. 8 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 14.65 mag = 2.20E-29 W m^-2^ Hz^-1^ Uncertainty : 0.086 mag = 1.74E-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
No. 9 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 13.276 mag = 7.79E-29 W m^-2^ Hz^-1^ Uncertainty : 0.024 mag = 1.74E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (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 : J Measurement : 12.264 mag = 1.98E-28 W m^-2^ Hz^-1^ Uncertainty : 0.037 mag = 6.86E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 41.2 x 29.7 arcsec integration area.
No. 11 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 12.117 mag = 2.27E-28 W m^-2^ Hz^-1^ Uncertainty : 0.046 mag = 9.80E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 12 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 11.616 mag = 2.31E-28 W m^-2^ Hz^-1^ Uncertainty : 0.055 mag = 1.20E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 41.2 x 29.7 arcsec integration area.
No. 13 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 12.658 mag = 8.85E-29 W m^-2^ Hz^-1^ Uncertainty : 0.033 mag = 2.73E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (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 : H Measurement : 11.499 mag = 2.57E-28 W m^-2^ Hz^-1^ Uncertainty : 0.066 mag = 1.61E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 15 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 14.368 mag = 1.83E-29 W m^-2^ Hz^-1^ Uncertainty : 0.135 mag = 2.28E-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
No. 16 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 13.394 mag = 4.49E-29 W m^-2^ Hz^-1^ Uncertainty : 0.028 mag = 1.16E-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. 17 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 13.163 mag = 3.62E-29 W m^-2^ Hz^-1^ Uncertainty : 0.063 mag = 2.10E-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. 18 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 14.066 mag = 1.58E-29 W m^-2^ Hz^-1^ Uncertainty : 0.125 mag = 1.81E-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. 19 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 12.363 mag = 7.56E-29 W m^-2^ Hz^-1^ Uncertainty : 0.039 mag = 2.77E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 20 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 11.079 mag = 2.47E-28 W m^-2^ Hz^-1^ Uncertainty : 0.069 mag = 1.62E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 21 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 11.362 mag = 1.90E-28 W m^-2^ Hz^-1^ Uncertainty : 0.075 mag = 1.36E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 000408.85 +072245.8 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 41.2 x 29.7 arcsec integration area.
No. 22 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 4.67 Jy km s^-1^ = 2.17E-22 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 6199 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 00 04 08.9 +07 22 44 (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 : 5.42 Jy km s^-1^ = 2.51E-22 W m^-2^ Uncertainty : 0.54 Jy km s^-1^ = 2.51E-23 Significance : uncertainty Freq or Vel. : 6199 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 00 04 08.9 +07 22 44 (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 : 5.42 Jy km s^-1^ = 2.51E-22 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 6199 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 00 04 08.9 +07 22 44 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected line flux
No. 25 Reference Code : 1993ApJS...88..383L Freq. targeted : HI (21 cm line) Measurement : 5.0 Jy km s^-1^ = 2.31E-22 W m^-2^ Uncertainty : 20 % Jy km s^-1^ = 4.62E-23 Significance : typical accuracy Freq or Vel. : 21 cm (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 000134.9 +070605. (B1950) Spatial mode : Flux in fixed aperture; Pointing corrected Notes : From new raw data Qualifiers :
No. 26 Reference Code : 1998AJ....115.1693C Freq. targeted : 1.4GHz Measurement : 3.1 milliJy = 3.10E-29 W m^-2^ Hz^-1^ Uncertainty : 0.6 milliJy = 6.00E-30 Significance : uncertainty Freq or Vel. : 1.40 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 00 04 7.44 +07 22 44.0 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :

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