NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-16 T00:23:10 PDT
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Redshift data point(s) for object NGC 1821

3 redshift data point(s) found in NED.


No.Frequency Targeted km/s +/- unc z +/- uncReference Code
0   3606   6   0.012029   0.000020   2006HIPAS.C...0000:
1 21-cm 3606   6   0.012029   0.000020   2006HIPAS.C...0000:
2 Optical 3608   36   0.012035   0.000120   1992ApJS...83...29S
3 Optical 3654   45   0.012188   0.000150   20096dF...C...0000J

Detailed information for each entry

No. 1
Name in publication  : HIPASS J0511-15               
Coordinates          : 051152.6                 -150927          J2000
Features targeted    : 21-cm                         
Velocity or redshift :  3606.2         km/s                     z=   0.012029
Uncertainty          : +/-6.1                                   +/-  0.000020
Unc. Significance    : estimated error
Reference Code       : 2006HIPAS.C...0000:

Measurement Mode     :
    Spectral range   : Radio
    Spectrograph     : Heterodyne receiver(e.g., 21-cm)
    Features         : 1 Emission lines
    Technique        : Mid-point of line profile at 50% lvel
    Spatial mode     : Redshift is systemic

Reference Frame      : Heliocentric velocity or redshift
Qualifiers           : From new, raw data

NED Comment          :                                         



No. 2 Name in publication : IRAS 05095-1511 Coordinates : 050930.1 -151139 B1950 Features targeted : Optical Velocity or redshift : 3608 km/s z= 0.012035 Uncertainty : +/-36 +/- 0.000120 Unc. Significance : estimated error Reference Code : 1992ApJS...83...29S Measurement Mode : Spectral range : Optical Spectrograph : Long-slit spectrum Features : Emission lines Technique : Individual line fitting Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data NED Comment :


No. 3 Name in publication : 6dF J0511460-150805 Coordinates : 051146.10 -150804.7 J2000 Features targeted : Optical Velocity or redshift : 3654 km/s z= 0.012188 Uncertainty : +/-45 +/- 0.000150 Unc. Significance : uncertainty Reference Code : 20096dF...C...0000J Measurement Mode : Spectral range : Optical Spectrograph : Fiber-optic feed Features : Both absorption and emission lines Technique : Cross-correlation fit to template spectrum Spatial mode : Redshift is systemic Reference Frame : Heliocentric velocity or redshift Qualifiers : From new, raw data NED Comment :



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