NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-06-16 T10:05:53 PDT
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Redshift data point(s) for object NGC 2817

4 redshift data point(s) found in NED.


No.Frequency Targeted km/s +/- unc z +/- uncReference Code
0   3534   3   0.011788   0.000010   1998A&AS..130..333T
1 21-cm 3534   3   0.011788   0.000010   1998A&AS..130..333T
2 21-cm 3540   5   0.011808   0.000017   2005ApJS..160..149S
3 21-cm 3529   6   0.011771   0.000021   2006HIPAS.C...0000:
4 3538     0.011801     2015MNRAS.447.1531C

Detailed information for each entry

No. 1
Name in publication  : PGC 026223                    
Coordinates          : 091441.                  -043236.         B1950
Features targeted    : 21-cm                         
Velocity or redshift :  3534           km/s                     z=   0.011788
Uncertainty          : +/-3                                     +/-  0.000010
Unc. Significance    : mean error
Reference Code       : 1998A&AS..130..333T

Measurement Mode     :
    Spectral range   : Radio
    Spectrograph     : Heterodyne receiver(e.g., 21-cm)
    Features         : 1 Emission lines
    Technique        : Mid-point of line profile at 20% lvel
    Spatial mode     : Redshift is systemic

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

NED Comment          :                                         



No. 2 Name in publication : AGC 490059 Coordinates : 091710.4 -044507 J2000 Features targeted : 21-cm Velocity or redshift : 3540 km/s z= 0.011808 Uncertainty : +/-4 +/- 0.000017 Unc. Significance : estimated error Reference Code : 2005ApJS..160..149S 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 reprocessed raw data NED Comment : 'Quality' Good. Nancay data.


No. 3 Name in publication : HIPASS J0917-04 Coordinates : 091711.7 -044442 J2000 Features targeted : 21-cm Velocity or redshift : 3528.9 km/s z= 0.011771 Uncertainty : +/-6.2 +/- 0.000021 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. 4 Name in publication : Coordinates : Features targeted : Velocity or redshift : 3538 km/s z= 0.011801 Uncertainty : No uncertainty given Unc. Significance : no unc. reported Reference Code : 2015MNRAS.447.1531C Measurement Mode : Reference Frame : Heliocentric velocity or redshift Qualifiers : Uncertain origin NED Comment :



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