NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-02-23 T13:44:46 PST
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Spectral Energy Distribution (SED) for NGC 1227:

17 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 B (m_B) 15.24 +/- 0.21 mag 6.81E+14 3.42E-03 +/- 7.29E-04 Jy Broad-band 1991RC3.9.C...0000d 1
2 m_p 15.7 +/- 0.4 mag 6.81E+14 2.24E-03 +/- 9.96E-04 Jy Broad-band 1968CGCG6.C...0000Z 2
3 J (2MASS/FLWO) 13.067 +/- 0.038 mag 2.43E+14 9.46E-03 +/- 3.31E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 3
4 J (2MASS/FLWO) 12.872 +/- 0.011 mag 2.43E+14 1.13E-02 +/- 1.15E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 4
5 J 12.153 +/- 0.025 mag 2.40E+14 2.19E-02 +/- 5.10E-04 Jy Broad-band 34.6 x 22.8 arcsec integration area. 20032MASX.C.......: 5
6 J 12.006 +/- 0.027 mag 2.40E+14 2.51E-02 +/- 6.32E-04 Jy Broad-band 20032MASX.C.......: 6
7 J_14arcsec (2MASS) 12.529 +/- 0.011 mag 2.40E+14 1.55E-02 +/- 1.58E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 7
8 H 11.135 +/- 0.032 mag 1.82E+14 3.60E-02 +/- 1.08E-03 Jy Broad-band 20032MASX.C.......: 8
9 H_14arcsec (2MASS) 11.765 +/- 0.014 mag 1.82E+14 2.02E-02 +/- 2.62E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 9
10 H 11.342 +/- 0.035 mag 1.82E+14 2.98E-02 +/- 9.75E-04 Jy Broad-band 34.6 x 22.8 arcsec integration area. 20032MASX.C.......: 10
11 H (2MASS/FLWO) 12.398 +/- 0.047 mag 1.80E+14 1.12E-02 +/- 4.87E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 11
12 H (2MASS/FLWO) 12.122 +/- 0.014 mag 1.80E+14 1.45E-02 +/- 1.87E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 12
13 K_s (2MASS/FLWO) 12.128 +/- 0.04 mag 1.39E+14 9.39E-03 +/- 3.46E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 13
14 K_s (2MASS/FLWO) 11.819 +/- 0.016 mag 1.39E+14 1.25E-02 +/- 1.84E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 14
15 K_s 10.970 +/- 0.036 mag 1.38E+14 2.73E-02 +/- 9.20E-04 Jy Broad-band 20032MASX.C.......: 15
16 K_s 11.105 +/- 0.041 mag 1.38E+14 2.41E-02 +/- 9.27E-04 Jy Broad-band 34.6 x 22.8 arcsec integration area. 20032MASX.C.......: 16
17 K_s_14arcsec (2MASS) 11.475 +/- 0.014 mag 1.38E+14 1.71E-02 +/- 2.22E-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    :  15.24       mag                  = 3.41E-29 W m^-2^ Hz^-1^
Uncertainty    :  0.21        mag                  = 7.29E-30
Significance   : rms uncertainty
Freq or Vel.   : 4400         A            (OBS   )= 6.81E+14 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 030759.3        +350810 (B1950)
Spatial mode   : Multiple methods
Notes          : Homogenized from new and previously published data; Standard
                 Johnson UBVRI filters assumed
Qualifiers     :                                         

No. 2 Reference Code : 1968CGCG6.C...0000Z Freq. targeted : m_p Measurement : 15.7 mag = 2.24E-29 W m^-2^ Hz^-1^ Uncertainty : 0.4 mag = 9.96E-30 Significance : rms noise Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 030800.0 +350800. (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 : 13.067 mag = 9.46E-29 W m^-2^ Hz^-1^ Uncertainty : 0.038 mag = 3.31E-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. 4 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 12.872 mag = 1.13E-28 W m^-2^ Hz^-1^ Uncertainty : 0.011 mag = 1.15E-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. 5 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 12.153 mag = 2.19E-28 W m^-2^ Hz^-1^ Uncertainty : 0.025 mag = 5.10E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 34.6 x 22.8 arcsec integration area.
No. 6 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 12.006 mag = 2.51E-28 W m^-2^ Hz^-1^ Uncertainty : 0.027 mag = 6.32E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (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 : 12.529 mag = 1.55E-28 W m^-2^ Hz^-1^ Uncertainty : 0.011 mag = 1.58E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (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 : 11.135 mag = 3.60E-28 W m^-2^ Hz^-1^ Uncertainty : 0.032 mag = 1.08E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (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 : 11.765 mag = 2.02E-28 W m^-2^ Hz^-1^ Uncertainty : 0.014 mag = 2.62E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (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 : 11.342 mag = 2.98E-28 W m^-2^ Hz^-1^ Uncertainty : 0.035 mag = 9.75E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 34.6 x 22.8 arcsec integration area.
No. 11 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 12.398 mag = 1.12E-28 W m^-2^ Hz^-1^ Uncertainty : 0.047 mag = 4.87E-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. 12 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 12.122 mag = 1.45E-28 W m^-2^ Hz^-1^ Uncertainty : 0.014 mag = 1.87E-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 : K_s (2MASS/FLWO) Measurement : 12.128 mag = 9.39E-29 W m^-2^ Hz^-1^ Uncertainty : 0.04 mag = 3.46E-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 : Profile-fit
No. 14 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 11.819 mag = 1.25E-28 W m^-2^ Hz^-1^ Uncertainty : 0.016 mag = 1.84E-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 : 10.970 mag = 2.73E-28 W m^-2^ Hz^-1^ Uncertainty : 0.036 mag = 9.20E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 16 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 11.105 mag = 2.41E-28 W m^-2^ Hz^-1^ Uncertainty : 0.041 mag = 9.27E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 34.6 x 22.8 arcsec integration area.
No. 17 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 11.475 mag = 1.71E-28 W m^-2^ Hz^-1^ Uncertainty : 0.014 mag = 2.22E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 031107.72 +351929.5 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.

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