NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-24 T04:43:46 PDT
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Spectral Energy Distribution (SED) for NGC 7521:

22 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 20.5957 +/- 0.284006 mag 1.95E+15 2.10E-05 +/- 5.49E-06 Jy Broad-band Kron flux in elliptical aperture 2012GASC..C...0000S 1
2 FUV (GALEX) AB 22.4331 +/- 0.509000 mag 1.95E+15 3.86E-06 +/- 1.81E-06 Jy Broad-band Flux in 7.5 arcsec diameter aperture 2012GASC..C...0000S 2
3 NUV (GALEX) AB 19.1818 +/- 0.0890901 mag 1.29E+15 7.71E-05 +/- 6.33E-06 Jy Broad-band Kron flux in elliptical aperture 2012GASC..C...0000S 3
4 NUV (GALEX) AB 21.1183 +/- 0.195790 mag 1.29E+15 1.30E-05 +/- 2.34E-06 Jy Broad-band Flux in 7.5 arcsec diameter aperture 2012GASC..C...0000S 4
5 m_p 14.9 +/- 0.4 mag 6.81E+14 4.67E-03 +/- 2.08E-03 Jy Broad-band 1965CGCG5.C...0000Z 5
6 B (m_B) 14.86 +/- 0.18 mag 6.81E+14 4.85E-03 +/- 8.74E-04 Jy Broad-band 1991RC3.9.C...0000d 6
7 b_J 15.02 +/- 0.12 mag 6.41E+14 3.88E-03 +/- 4.53E-04 Jy Broad-band 1990MNRAS.243..692M 7
8 J (2MASS/CTIO) 12.1 +/- 0.005 mag 2.43E+14 2.30E-02 +/- 1.06E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 8
9 J (2MASS/CTIO) 12.291 +/- 0.045 mag 2.43E+14 1.93E-02 +/- 8.01E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 9
10 J_14arcsec (2MASS) 11.771 +/- 0.006 mag 2.40E+14 3.12E-02 +/- 1.73E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 10
11 J 11.477 +/- 0.016 mag 2.40E+14 4.08E-02 +/- 6.06E-04 Jy Broad-band 34.4 x 24.1 arcsec integration area. 20032MASX.C.......: 11
12 J 11.422 +/- 0.018 mag 2.40E+14 4.30E-02 +/- 7.18E-04 Jy Broad-band 20032MASX.C.......: 12
13 H_14arcsec (2MASS) 11.014 +/- 0.008 mag 1.82E+14 4.02E-02 +/- 2.98E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 13
14 H 10.754 +/- 0.026 mag 1.82E+14 5.11E-02 +/- 1.24E-03 Jy Broad-band 34.4 x 24.1 arcsec integration area. 20032MASX.C.......: 14
15 H 10.675 +/- 0.025 mag 1.82E+14 5.50E-02 +/- 1.28E-03 Jy Broad-band 20032MASX.C.......: 15
16 H (2MASS/CTIO) 11.303 +/- 0.01 mag 1.80E+14 3.08E-02 +/- 2.84E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 16
17 H (2MASS/CTIO) 11.541 +/- 0.045 mag 1.80E+14 2.48E-02 +/- 1.03E-03 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 17
18 K_s (2MASS/CTIO) 11.067 +/- 0.037 mag 1.39E+14 2.50E-02 +/- 8.50E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 18
19 K_s (2MASS/CTIO) 10.991 +/- 0.007 mag 1.39E+14 2.68E-02 +/- 1.73E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 19
20 K_s 10.436 +/- 0.030 mag 1.38E+14 4.46E-02 +/- 1.25E-03 Jy Broad-band 34.4 x 24.1 arcsec integration area. 20032MASX.C.......: 20
21 K_s 10.361 +/- 0.027 mag 1.38E+14 4.78E-02 +/- 1.20E-03 Jy Broad-band 20032MASX.C.......: 21
22 K_s_14arcsec (2MASS) 10.690 +/- 0.009 mag 1.38E+14 3.53E-02 +/- 2.94E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 22


Detailed Information for Each Entry

 No. 1
Reference Code : 2012GASC..C...0000S
Freq. targeted : FUV (GALEX) AB      
Measurement    :  20.5957     mag                  = 2.10E-31 W m^-2^ Hz^-1^
Uncertainty    :  0.284006    mag                  = 5.49E-32
Significance   : uncertainty
Freq or Vel.   : 1538.6       A            (OBS   )= 1.95E+15 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 348.39728247247 -1.731518580333 (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 : 22.4331 mag = 3.86E-32 W m^-2^ Hz^-1^ Uncertainty : 0.509000 mag = 1.81E-32 Significance : uncertainty Freq or Vel. : 1538.6 A (OBS )= 1.95E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 348.39728247247 -1.731518580333 (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 : 19.1818 mag = 7.71E-31 W m^-2^ Hz^-1^ Uncertainty : 0.0890901 mag = 6.33E-32 Significance : uncertainty Freq or Vel. : 2315.7 A (OBS )= 1.29E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 348.39728247247 -1.731518580333 (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 : 21.1183 mag = 1.30E-31 W m^-2^ Hz^-1^ Uncertainty : 0.195790 mag = 2.34E-32 Significance : uncertainty Freq or Vel. : 2315.7 A (OBS )= 1.29E+15 Hz Frequency mode : Broad-band measurement Coord. targeted: 348.39728247247 -1.731518580333 (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 : 14.9 mag = 4.67E-29 W m^-2^ Hz^-1^ Uncertainty : 0.4 mag = 2.08E-29 Significance : rms noise Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231106.0 -020000. (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 : 14.86 mag = 4.85E-29 W m^-2^ Hz^-1^ Uncertainty : 0.18 mag = 8.74E-30 Significance : rms uncertainty Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231101.1 -020013 (B1950) Spatial mode : Multiple methods Notes : Homogenized from new and previously published data; Standard Johnson UBVRI filters assumed Qualifiers :
No. 7 Reference Code : 1990MNRAS.243..692M Freq. targeted : b_J Measurement : 15.02 mag = 3.88E-29 W m^-2^ Hz^-1^ Uncertainty : 0.12 mag = 4.53E-30 Significance : rms uncertainty Freq or Vel. : 4680 A (OBS )= 6.41E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231101.06 -020014.0 (B1950) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 8 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 12.1 mag = 2.30E-28 W m^-2^ Hz^-1^ Uncertainty : 0.005 mag = 1.06E-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. 9 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/CTIO) Measurement : 12.291 mag = 1.93E-28 W m^-2^ Hz^-1^ Uncertainty : 0.045 mag = 8.01E-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. 10 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 11.771 mag = 3.12E-28 W m^-2^ Hz^-1^ Uncertainty : 0.006 mag = 1.73E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 11 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.477 mag = 4.08E-28 W m^-2^ Hz^-1^ Uncertainty : 0.016 mag = 6.06E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 34.4 x 24.1 arcsec integration area.
No. 12 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 11.422 mag = 4.30E-28 W m^-2^ Hz^-1^ Uncertainty : 0.018 mag = 7.18E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 13 Reference Code : 20032MASX.C.......: Freq. targeted : H_14arcsec (2MASS) Measurement : 11.014 mag = 4.02E-28 W m^-2^ Hz^-1^ Uncertainty : 0.008 mag = 2.98E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (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 : 10.754 mag = 5.11E-28 W m^-2^ Hz^-1^ Uncertainty : 0.026 mag = 1.24E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 34.4 x 24.1 arcsec integration area.
No. 15 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 10.675 mag = 5.50E-28 W m^-2^ Hz^-1^ Uncertainty : 0.025 mag = 1.28E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 16 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/CTIO) Measurement : 11.303 mag = 3.08E-28 W m^-2^ Hz^-1^ Uncertainty : 0.01 mag = 2.84E-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 : H (2MASS/CTIO) Measurement : 11.541 mag = 2.48E-28 W m^-2^ Hz^-1^ Uncertainty : 0.045 mag = 1.03E-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. 18 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 11.067 mag = 2.50E-28 W m^-2^ Hz^-1^ Uncertainty : 0.037 mag = 8.50E-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. 19 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/CTIO) Measurement : 10.991 mag = 2.68E-28 W m^-2^ Hz^-1^ Uncertainty : 0.007 mag = 1.73E-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. 20 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.436 mag = 4.46E-28 W m^-2^ Hz^-1^ Uncertainty : 0.030 mag = 1.25E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 34.4 x 24.1 arcsec integration area.
No. 21 Reference Code : 20032MASX.C.......: Freq. targeted : K_s Measurement : 10.361 mag = 4.78E-28 W m^-2^ Hz^-1^ Uncertainty : 0.027 mag = 1.20E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 22 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 10.690 mag = 3.53E-28 W m^-2^ Hz^-1^ Uncertainty : 0.009 mag = 2.94E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 231335.31 -014353.0 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.

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