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Date and Time of the Query: 2019-03-25 T09:03:00 PDT
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Spectral Energy Distribution (SED) for NGC 0251:

32 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) 13.90 +/- 0.29 mag 6.81E+14 1.17E-02 +/- 3.59E-03 Jy Broad-band 1991RC3.9.C...0000d 1
2 B (m_B^0) 13.68 ... mag 6.81E+14 1.44E-02 ... Jy Broad-band 1991RC3.9.C...0000d 2
3 m_p 14.6 +/- 0.4 mag 6.81E+14 6.16E-03 +/- 2.74E-03 Jy Broad-band 1965CGCG5.C...0000Z 3
4 I 11.52 +/- 0.03 mag 3.79E+14 6.29E-02 +/- 1.74E-03 Jy Broad-band Observed magnitude 2007ApJS..172..599S 4
5 I 11.29 ... mag 3.79E+14 7.77E-02 ... Jy Broad-band 2007ApJS..172..599S 5
6 J (2MASS/FLWO) 13.326 +/- 0.003 mag 2.43E+14 7.45E-03 +/- 2.06E-05 Jy Broad-band 4" aperture 2006AJ....131.1163S 6
7 J (2MASS/FLWO) 13.975 +/- 0.085 mag 2.43E+14 4.10E-03 +/- 3.21E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 7
8 J 10.904 +/- 0.022 mag 2.40E+14 6.92E-02 +/- 1.42E-03 Jy Broad-band 73.0 x 45.3 arcsec integration area. 20032MASX.C.......: 8
9 J 10.698 +/- 0.021 mag 2.40E+14 8.37E-02 +/- 1.63E-03 Jy Broad-band 20032MASX.C.......: 9
10 J_14arcsec (2MASS) 12.430 +/- 0.011 mag 2.40E+14 1.70E-02 +/- 1.73E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 10
11 H 10.246 +/- 0.029 mag 1.82E+14 8.16E-02 +/- 2.21E-03 Jy Broad-band 73.0 x 45.3 arcsec integration area. 20032MASX.C.......: 11
12 H 10.051 +/- 0.024 mag 1.82E+14 9.77E-02 +/- 2.18E-03 Jy Broad-band 20032MASX.C.......: 12
13 H_14arcsec (2MASS) 11.762 +/- 0.013 mag 1.82E+14 2.02E-02 +/- 2.43E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 13
14 H (2MASS/FLWO) 12.632 +/- 0.018 mag 1.80E+14 9.07E-03 +/- 1.50E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 14
15 H (2MASS/FLWO) 13.284 +/- 0.079 mag 1.80E+14 4.97E-03 +/- 3.62E-04 Jy Broad-band Profile-fit; Poor quality 2006AJ....131.1163S 15
16 K_s (2MASS/FLWO) 13.012 +/- 0.08 mag 1.39E+14 4.16E-03 +/- 3.07E-04 Jy Broad-band Profile-fit 2006AJ....131.1163S 16
17 K_s (2MASS/FLWO) 12.39 +/- 0.033 mag 1.39E+14 7.38E-03 +/- 2.24E-04 Jy Broad-band 4" aperture 2006AJ....131.1163S 17
18 K_s 9.972 +/- 0.047 mag 1.38E+14 6.84E-02 +/- 3.03E-03 Jy Broad-band 73.0 x 45.3 arcsec integration area. 20032MASX.C.......: 18
19 K_s_14arcsec (2MASS) 11.469 +/- 0.020 mag 1.38E+14 1.72E-02 +/- 3.20E-04 Jy Broad-band 14.0 x 14.0 arcsec aperture. 20032MASX.C.......: 19
20 K_s 9.822 +/- 0.041 mag 1.38E+14 7.86E-02 +/- 3.02E-03 Jy Broad-band 20032MASX.C.......: 20
21 12 microns (IRAS) ... <1.345E-01 Jy 2.50E+13 < 1.35E-01 Jy Broad-band 1990IRASF.C...0000M 21
22 25 microns (IRAS) ... <1.950E-01 Jy 1.20E+13 < 1.95E-01 Jy Broad-band 1990IRASF.C...0000M 22
23 60 microns (IRAS) 5.947E-01 +/- 10 % Jy 5.00E+12 5.95E-01 +/- 5.95E-02 Jy Broad-band IRAS quality flag = 3 1990IRASF.C...0000M 23
24 100 microns (IRAS) 1.551E+00 +/- 15 % Jy 3.00E+12 1.55E+00 +/- 2.33E-01 Jy Broad-band IRAS quality flag = 2 1990IRASF.C...0000M 24
25 HI (21 cm line) 12.22 ... Jy km sec^-1^ 1.42E+09 5.70E+04 ... Jy-Hz Line rms noise = 1.65 mJy 1993AJ....105.1271G 25
26 HI (21 cm line)_c_ 17.98 ... Jy km sec^-1^ 1.42E+09 8.38E+04 ... Jy-Hz Line rms noise = 1.65 mJy 1993AJ....105.1271G 26
27 HI 21 cm line 12.19 ... Jy km s^-1^ 1.42E+09 5.69E+04 ... Jy-Hz Line 2005ApJS..160..149S 27
28 HI 21 cm line 18.45 +/- 2.43 Jy km s^-1^ 1.42E+09 8.61E+04 +/- 1.13E+04 Jy-Hz Line Self-absorption corrected line flux 2005ApJS..160..149S 28
29 HI 21 cm line 17.96 ... Jy km s^-1^ 1.42E+09 8.38E+04 ... Jy-Hz Line Corrected line flux 2005ApJS..160..149S 29
30 HI (21 cm line) 11.5 +/- 1.1 Jy km sec^-1^ 1.42E+09 5.27E+04 +/- 5.04E+03 Jy-Hz Line 1998A&AS..130..333T 30
31 1.4 GHz (VLA) 2.2 ... milliJy 1.40E+09 2.20E-03 ... Jy Broad-band 2002AJ....124..675C 31
32 1.4GHz 2.3 +/- 0.5 milliJy 1.40E+09 2.30E-03 +/- 5.00E-04 Jy Broad-band 1998AJ....115.1693C 32


Detailed Information for Each Entry

 No. 1
Reference Code : 1991RC3.9.C...0000d
Freq. targeted : B (m_B)             
Measurement    :  13.90       mag                  = 1.17E-28 W m^-2^ Hz^-1^
Uncertainty    :  0.29        mag                  = 3.59E-29
Significance   : rms uncertainty
Freq or Vel.   : 4400         A            (OBS   )= 6.81E+14 Hz
Frequency mode : Broad-band measurement
Coord. targeted: 0045.2          +1918 (B1950)
Spatial mode   : Multiple methods
Notes          : Homogenized from new and previously published data; Standard
                 Johnson UBVRI filters assumed
Qualifiers     :                                         

No. 2 Reference Code : 1991RC3.9.C...0000d Freq. targeted : B (m_B^0) Measurement : 13.68 mag = 1.44E-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: 0045.2 +1918 (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. 3 Reference Code : 1965CGCG5.C...0000Z Freq. targeted : m_p Measurement : 14.6 mag = 6.16E-29 W m^-2^ Hz^-1^ Uncertainty : 0.4 mag = 2.74E-29 Significance : rms noise Freq or Vel. : 4400 A (OBS )= 6.81E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004512.0 +191800. (B1950) Spatial mode : Estimated by eye Notes : From new raw data Qualifiers :
No. 4 Reference Code : 2007ApJS..172..599S Freq. targeted : I Measurement : 11.52 mag = 6.29E-28 W m^-2^ Hz^-1^ Uncertainty : 0.03 mag = 1.74E-29 Significance : uncertainty Freq or Vel. : 7900 A (OBS )= 3.79E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 00 47 54.0 +19 35 48 (J2000) Spatial mode : Total flux Notes : Averaged new and previously published data; Standard Cousins R_C, I_C filters assumed Qualifiers : Observed magnitude
No. 5 Reference Code : 2007ApJS..172..599S Freq. targeted : I Measurement : 11.29 mag = 7.77E-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: 00 47 54.0 +19 35 48 (J2000) Spatial mode : Total flux Notes : Averaged new and previously published data; Extinction-corrected for Milky Way; Standard Cousins R_C, I_C filters assumed Qualifiers :
No. 6 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 13.326 mag = 7.45E-29 W m^-2^ Hz^-1^ Uncertainty : 0.003 mag = 2.06E-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. 7 Reference Code : 2006AJ....131.1163S Freq. targeted : J (2MASS/FLWO) Measurement : 13.975 mag = 4.10E-29 W m^-2^ Hz^-1^ Uncertainty : 0.085 mag = 3.21E-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. 8 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 10.904 mag = 6.92E-28 W m^-2^ Hz^-1^ Uncertainty : 0.022 mag = 1.42E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 73.0 x 45.3 arcsec integration area.
No. 9 Reference Code : 20032MASX.C.......: Freq. targeted : J Measurement : 10.698 mag = 8.37E-28 W m^-2^ Hz^-1^ Uncertainty : 0.021 mag = 1.63E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.25 microns (OBS )= 2.40E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 10 Reference Code : 20032MASX.C.......: Freq. targeted : J_14arcsec (2MASS) Measurement : 12.430 mag = 1.70E-28 W m^-2^ Hz^-1^ Uncertainty : 0.011 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: 004754.03 +193548.6 (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 : H Measurement : 10.246 mag = 8.16E-28 W m^-2^ Hz^-1^ Uncertainty : 0.029 mag = 2.21E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 73.0 x 45.3 arcsec integration area.
No. 12 Reference Code : 20032MASX.C.......: Freq. targeted : H Measurement : 10.051 mag = 9.77E-28 W m^-2^ Hz^-1^ Uncertainty : 0.024 mag = 2.18E-29 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (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 : 11.762 mag = 2.02E-28 W m^-2^ Hz^-1^ Uncertainty : 0.013 mag = 2.43E-30 Significance : 1 sigma uncert. Freq or Vel. : 1.65 microns (OBS )= 1.82E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : 14.0 x 14.0 arcsec aperture.
No. 14 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 12.632 mag = 9.07E-29 W m^-2^ Hz^-1^ Uncertainty : 0.018 mag = 1.50E-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. 15 Reference Code : 2006AJ....131.1163S Freq. targeted : H (2MASS/FLWO) Measurement : 13.284 mag = 4.97E-29 W m^-2^ Hz^-1^ Uncertainty : 0.079 mag = 3.62E-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. 16 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 13.012 mag = 4.16E-29 W m^-2^ Hz^-1^ Uncertainty : 0.08 mag = 3.07E-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. 17 Reference Code : 2006AJ....131.1163S Freq. targeted : K_s (2MASS/FLWO) Measurement : 12.39 mag = 7.38E-29 W m^-2^ Hz^-1^ Uncertainty : 0.033 mag = 2.24E-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 : 20032MASX.C.......: Freq. targeted : K_s Measurement : 9.972 mag = 6.84E-28 W m^-2^ Hz^-1^ Uncertainty : 0.047 mag = 3.03E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data; Corrected for contaminating sources Qualifiers : 73.0 x 45.3 arcsec integration area.
No. 19 Reference Code : 20032MASX.C.......: Freq. targeted : K_s_14arcsec (2MASS) Measurement : 11.469 mag = 1.72E-28 W m^-2^ Hz^-1^ Uncertainty : 0.020 mag = 3.20E-30 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (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 : 9.822 mag = 7.86E-28 W m^-2^ Hz^-1^ Uncertainty : 0.041 mag = 3.02E-29 Significance : 1 sigma uncert. Freq or Vel. : 2.17 microns (OBS )= 1.38E+14 Hz Frequency mode : Broad-band measurement Coord. targeted: 004754.03 +193548.6 (J2000) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 21 Reference Code : 1990IRASF.C...0000M Freq. targeted : 12 microns (IRAS) Measurement : <1.345E-01 Jy < 1.34E-27 W m^-2^ Hz^-1^ Uncertainty : Significance : 90% confidence Freq or Vel. : 12 microns (OBS )= 2.50E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 004515.9 +191936 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 22 Reference Code : 1990IRASF.C...0000M Freq. targeted : 25 microns (IRAS) Measurement : <1.950E-01 Jy < 1.95E-27 W m^-2^ Hz^-1^ Uncertainty : Significance : 90% confidence Freq or Vel. : 25 microns (OBS )= 1.20E+13 Hz Frequency mode : Broad-band measurement Coord. targeted: 004515.9 +191936 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers :
No. 23 Reference Code : 1990IRASF.C...0000M Freq. targeted : 60 microns (IRAS) Measurement : 5.947E-01 Jy = 5.95E-27 W m^-2^ Hz^-1^ Uncertainty : 10 % Jy = 5.95E-28 Significance : uncertainty Freq or Vel. : 60 microns (OBS )= 5.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 004515.9 +191936 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : IRAS quality flag = 3
No. 24 Reference Code : 1990IRASF.C...0000M Freq. targeted : 100 microns (IRAS) Measurement : 1.551E+00 Jy = 1.55E-26 W m^-2^ Hz^-1^ Uncertainty : 15 % Jy = 2.33E-27 Significance : uncertainty Freq or Vel. : 100 microns (OBS )= 3.00E+12 Hz Frequency mode : Broad-band measurement Coord. targeted: 004515.9 +191936 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : IRAS quality flag = 2
No. 25 Reference Code : 1993AJ....105.1271G Freq. targeted : HI (21 cm line) Measurement : 12.22 Jy km sec^-1^ = 5.70E-22 W m^-2^ Uncertainty : See Qualifier Jy km sec^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4552 km sec^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 004515.1 +191928 (B1950) Spatial mode : Flux in fixed aperture Notes : From new raw data Qualifiers : rms noise = 1.65 mJy
No. 26 Reference Code : 1993AJ....105.1271G Freq. targeted : HI (21 cm line)_c_ Measurement : 17.98 Jy km sec^-1^ = 8.38E-22 W m^-2^ Uncertainty : See Qualifier Jy km sec^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4552 km sec^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 004515.1 +191928 (B1950) Spatial mode : Corrected to total flux from single aperture measurement; Pointing and beam filling corrected Notes : From new raw data; Extinction-corrected internal to object Qualifiers : rms noise = 1.65 mJy
No. 27 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 12.19 Jy km s^-1^ = 5.69E-22 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4556 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 00 47 54.0 +19 35 48 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :
No. 28 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 18.45 Jy km s^-1^ = 8.61E-22 W m^-2^ Uncertainty : 2.43 Jy km s^-1^ = 1.13E-22 Significance : uncertainty Freq or Vel. : 4556 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 00 47 54.0 +19 35 48 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Self-absorption corrected line flux
No. 29 Reference Code : 2005ApJS..160..149S Freq. targeted : HI 21 cm line Measurement : 17.96 Jy km s^-1^ = 8.38E-22 W m^-2^ Uncertainty : Jy km s^-1^ = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 4556 km s^-1^ (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 00 47 54.0 +19 35 48 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers : Corrected line flux
No. 30 Reference Code : 1998A&AS..130..333T Freq. targeted : HI (21 cm line) Measurement : 11.5 Jy km sec^-1^ = 5.27E-22 W m^-2^ Uncertainty : 1.1 Jy km sec^-1^ = 5.04E-23 Significance : rms uncertainty Freq or Vel. : 21 cm (REST )= 1.42E+09 Hz Frequency mode : Line measurement; flux integrated over line; lines measured in emission Coord. targeted: 004511. +191800. (B1950) Spatial mode : Integrated from scans; Beam filling or dilution corrected Notes : From new raw data Qualifiers :
No. 31 Reference Code : 2002AJ....124..675C Freq. targeted : 1.4 GHz (VLA) Measurement : 2.2 milliJy = 2.20E-29 W m^-2^ Hz^-1^ Uncertainty : milliJy = 0.00E+00 Significance : no uncertainty reported Freq or Vel. : 1.4 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: Spatial mode : Flux integrated from map Notes : Averaged from previously published data Qualifiers :
No. 32 Reference Code : 1998AJ....115.1693C Freq. targeted : 1.4GHz Measurement : 2.3 milliJy = 2.30E-29 W m^-2^ Hz^-1^ Uncertainty : 0.5 milliJy = 5.00E-30 Significance : uncertainty Freq or Vel. : 1.40 GHz (OBS )= 1.40E+09 Hz Frequency mode : Broad-band measurement Coord. targeted: 00 47 53.46 +19 35 54.9 (J2000) Spatial mode : Flux integrated from map Notes : From new raw data Qualifiers :

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