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Hubble History

  1. Aug 14, 2008 #1
    I came across this interesting Havard article at http://www.cfa.harvard.edu/~huchra/hubble.plot.dat listing over 600 Hubble survey results dating back to about 1929 and up to 2008. I put all the data into into a spreadsheet and using over 500 Hubble estimates from 1960 onwards I got an average value of about 67.1 which was lower than I was expecting because the a lot of the early results were much higher than the current estimate of about 71

    Anyway, I have attached the spreadsheet which has all the data separated into | Hubble value | + error | - error | date | etc fields in numerical format which might be helpful to someone interested in doing a statistical analysis of the historical data.
     

    Attached Files:

  2. jcsd
  3. Aug 14, 2008 #2

    Garth

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    Your value of 67.1 seems about right.

    In 1985 Michael Rowan Robinson made a survey of all measurements of H0 and came up with a figure of 67 km/s/Mpc.

    Recently he said (RAS 2008 Presidential Address):
    It is interesting that your historical average is consistent with these values, the scatter was all about the same value with the uncertainty decreasing as time went on.

    Garth
     
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