NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-19 T17:42:12 PDT
Help | Comment | NED Home

Spectral Energy Distribution (SED) for NGC 1821:

24 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_J 13.8754 ... mag 6.41E+14 1.11E-02 ... Jy Broad-band 2005MNRAS.361...34D 1
2 R 12.9469 ... mag 4.68E+14 2.04E-02 ... Jy Broad-band 2005MNRAS.361...34D 2
3 I 13.3283 ... mag 3.79E+14 1.19E-02 ... Jy Broad-band 2005MNRAS.361...34D 3
4 J (2MASS/CTIO) 13.86 +/- 0.093 mag 2.43E+14 4.56E-03 +/- 3.90E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 4
5 J (2MASS/CTIO) 13.118 +/- 0.016 mag 2.43E+14 9.02E-03 +/- 1.33E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 5
6 J 11.812 +/- 0.025 mag 2.40E+14 3.00E-02 +/- 6.99E-04 Jy Broad-band 44.2 x 25.6 arcsec integration area. 20032MASX.C.......: 6
7 J 11.628 +/- 0.026 mag 2.40E+14 3.55E-02 +/- 8.61E-04 Jy Broad-band 20032MASX.C.......: 7
8 J_14arcsec (2MASS) 12.531 +/- 0.012 mag 2.40E+14 1.55E-02 +/- 1.72E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 8
9 H 11.196 +/- 0.038 mag 1.82E+14 3.40E-02 +/- 1.21E-03 Jy Broad-band 44.2 x 25.6 arcsec integration area. 20032MASX.C.......: 9
10 H 11.034 +/- 0.036 mag 1.82E+14 3.95E-02 +/- 1.33E-03 Jy Broad-band 20032MASX.C.......: 10
11 H_14arcsec (2MASS) 11.836 +/- 0.015 mag 1.82E+14 1.89E-02 +/- 2.63E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 11
12 H (2MASS/CTIO) 12.403 +/- 0.017 mag 1.80E+14 1.12E-02 +/- 1.75E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 12
13 H (2MASS/CTIO) 13.251 +/- 0.107 mag 1.80E+14 5.13E-03 +/- 5.05E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 13
14 K_s (2MASS/CTIO) 12.815 +/- 0.104 mag 1.39E+14 4.99E-03 +/- 4.78E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 14
15 K_s (2MASS/CTIO) 12.139 +/- 0.024 mag 1.39E+14 9.30E-03 +/- 2.06E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 15
16 K_s 10.918 +/- 0.065 mag 1.38E+14 2.86E-02 +/- 1.77E-03 Jy Broad-band 44.2 x 25.6 arcsec integration area. 20032MASX.C.......: 16
17 K_s 10.755 +/- 0.055 mag 1.38E+14 3.33E-02 +/- 1.73E-03 Jy Broad-band 20032MASX.C.......: 17
18 K_s_14arcsec (2MASS) 11.561 +/- 0.024 mag 1.38E+14 1.58E-02 +/- 3.54E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 18
19 12 microns (IRAS) 1.308E-01 +/- 15 % Jy 2.50E+13 1.31E-01 +/- 1.96E-02 Jy Broad-band IRAS quality flag = 3 1990IRASF.C...0000M 19
20 25 microns (IRAS) 3.946E-01 +/- 6 % Jy 1.20E+13 3.95E-01 +/- 7.85E-03 Jy Broad-band IRAS quality flag = 3 1990IRASF.C...0000M 20
21 60 microns (IRAS) 2.477E+00 +/- 4 % Jy 5.00E+12 2.48E+00 +/- 9.91E-02 Jy Broad-band IRAS quality flag = 3 1990IRASF.C...0000M 21
22 100 microns (IRAS) 4.248E+00 +/- 9 % Jy 3.00E+12 4.25E+00 +/- 3.82E-01 Jy Broad-band IRAS quality flag = 2 1990IRASF.C...0000M 22
23 HI line (Parkes) 14.2 ... Jy km s^-1^ 1.42E+09 6.65E+04 ... Jy-Hz Line 2005MNRAS.361...34D 23
24 1.4GHz 13.7 +/- 1.3 milliJy 1.40E+09 1.37E-02 +/- 1.30E-03 Jy Broad-band 1998AJ....115.1693C 24


Detailed Information for Each Entry

 No. 1
Reference Code : 2005MNRAS.361...34D
Freq. targeted : B_J                 
Measurement    :  13.8754     mag                  = 1.11E-28 W m^-2^ Hz^-1^
Uncertainty    :              mag                  = 0.00E+00
Significance   : no uncertainty reported
Freq or Vel.   :     4680     A            (OBS   )= 6.41E+14 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 051146.0        -150803.5 (J2000)
Spatial mode   : Flux in fixed aperture
Notes          : From new raw data
Qualifiers     :                                         

No. 2 Reference Code : 2005MNRAS.361...34D Freq. targeted : R Measurement : 12.9469 mag = 2.04E-28 W m^-2^ Hz^-1^ Uncertainty : mag = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 6400 A (OBS )= 4.68E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.0 -150803.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 3 Reference Code : 2005MNRAS.361...34D Freq. targeted : I Measurement : 13.3283 mag = 1.19E-28 W m^-2^ Hz^-1^ Uncertainty : mag = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 7900 A (OBS )= 3.79E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.0 -150803.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 4 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 13.86 mag = 4.55E-29 W m^-2^ Hz^-1^ Uncertainty : 0.093 mag = 3.90E-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 : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 13.118 mag = 9.02E-29 W m^-2^ Hz^-1^ Uncertainty : 0.016 mag = 1.33E-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. 6 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.812 mag = 3.00E-28 W m^-2^ Hz^-1^ Uncertainty : 0.025 mag = 6.99E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 44.2 x 25.6 arcsec integration area.
No. 7 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.628 mag = 3.55E-28 W m^-2^ Hz^-1^ Uncertainty : 0.026 mag = 8.61E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 8 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 12.531 mag = 1.55E-28 W m^-2^ Hz^-1^ Uncertainty : 0.012 mag = 1.72E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 9 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 11.196 mag = 3.40E-28 W m^-2^ Hz^-1^ Uncertainty : 0.038 mag = 1.21E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 44.2 x 25.6 arcsec integration area.
No. 10 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 11.034 mag = 3.95E-28 W m^-2^ Hz^-1^ Uncertainty : 0.036 mag = 1.33E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 11 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 11.836 mag = 1.89E-28 W m^-2^ Hz^-1^ Uncertainty : 0.015 mag = 2.63E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 12 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 12.403 mag = 1.12E-28 W m^-2^ Hz^-1^ Uncertainty : 0.017 mag = 1.75E-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. 13 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 13.251 mag = 5.13E-29 W m^-2^ Hz^-1^ Uncertainty : 0.107 mag = 5.05E-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. 14 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 12.815 mag = 4.99E-29 W m^-2^ Hz^-1^ Uncertainty : 0.104 mag = 4.78E-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. 15 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 12.139 mag = 9.30E-29 W m^-2^ Hz^-1^ Uncertainty : 0.024 mag = 2.06E-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. 16 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.918 mag = 2.86E-28 W m^-2^ Hz^-1^ Uncertainty : 0.065 mag = 1.77E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 44.2 x 25.6 arcsec integration area.
No. 17 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.755 mag = 3.33E-28 W m^-2^ Hz^-1^ Uncertainty : 0.055 mag = 1.73E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 18 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 11.561 mag = 1.58E-28 W m^-2^ Hz^-1^ Uncertainty : 0.024 mag = 3.54E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 051146.10 -150804.7 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 19 Reference Code : 1990IRASF.C...0000M Freq. targeted : 12 microns (IRAS) Measurement : 1.308E-01 Jy = 1.31E-27 W m^-2^ Hz^-1^ Uncertainty : 15 % Jy = 1.96E-28 Significance : uncertainty Freq or Vel. : 12 microns (OBS )= 2.50E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 050929.8 -151139 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 20 Reference Code : 1990IRASF.C...0000M Freq. targeted : 25 microns (IRAS) Measurement : 3.946E-01 Jy = 3.95E-27 W m^-2^ Hz^-1^ Uncertainty : 6 % Jy = 7.85E-29 Significance : uncertainty Freq or Vel. : 25 microns (OBS )= 1.20E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 050929.8 -151139 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 21 Reference Code : 1990IRASF.C...0000M Freq. targeted : 60 microns (IRAS) Measurement : 2.477E+00 Jy = 2.48E-26 W m^-2^ Hz^-1^ Uncertainty : 4 % Jy = 9.91E-28 Significance : uncertainty Freq or Vel. : 60 microns (OBS )= 5.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 050929.8 -151139 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 22 Reference Code : 1990IRASF.C...0000M Freq. targeted : 100 microns (IRAS) Measurement : 4.248E+00 Jy = 4.25E-26 W m^-2^ Hz^-1^ Uncertainty : 9 % Jy = 3.82E-27 Significance : uncertainty Freq or Vel. : 100 microns (OBS )= 3.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 050929.8 -151139 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : IRAS quality flag = 2
No. 23 Reference Code : 2005MNRAS.361...34D Freq. targeted : HI line (Parkes) Measurement : 14.2 Jy km s^-1^ = 6.65E-22 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 3623.0 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 051152.6 -150927. (J2000) Spatial mode : Flux integrated from map Notes : Averaged from previously published data Qualifiers :
No. 24 Reference Code : 1998AJ....115.1693C Freq. targeted : 1.4GHz Measurement : 13.7 milliJy = 1.37E-28 W m^-2^ Hz^-1^ Uncertainty : 1.3 milliJy = 1.30E-29 Significance : uncertainty Freq or Vel. : 1.40 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 05 11 45.69 -15 08 4.5 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :

Back to NED Home