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J/A+A/310/353       Redshift of 97 spirals                      (Guthrie+, 1996)
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Redshift periodicity in the Local Supercluster
     Guthrie B.N.G., Napier W.M.
    <Astron. Astrophys. 310, 353 (1996)>
    =1996A&A...310..353G      (SIMBAD/NED BibCode)
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ADC_Keywords: Redshifts ; Positional data
Keywords: galaxies: distances and redshifts - galaxies: spiral -
          radio lines: galaxies

Description:
    Persistent  claims   have  been   made  over   the  last   ~15yr  that
    extragalactic redshifts, when  corrected for  the Sun's  motion around
    the Galactic centre,  occur in multiples  of ~24 or  ~36km/s. A recent
    investigation by us of  40  spiral  galaxies  out  to  1000km/s,  with
    accurately  measured   redshifts,  gave  evidence   of  a  periodicity
    ~37.2-37.7km/s. Here  we extend  our enquiry  out to  the edge  of the
    Local   Super  cluster  (~2600km/s),  applying  a  simple  and  robust
    procedure to  a total of  97 accurately determined  redshifts. We find
    that,  when corrected for related vectors close to recent estimates of
    the Sun's galactocentric motion, the redshifts of spirals are strongly
    periodic  (P~37.6km/s). The formal  confidence level of  the result is
    extremely  high, and the  signal is seen  independently with different
    radio  telescopes. We  also examine  a further  sample of  117 spirals
    observed with the 300-foot Green Bank telescope alone. The periodicity
    phenomenon   appears  strongest  for  the  galaxies  linked  by  group
    membership, but  phase coherence probably holds  over large regions of
    the Local Supercluster.

File Summary:
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  FileName      Lrecl  Records   Explanations
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ReadMe             80        .   This file
table2             41       97   Sample of 97 spirals with accurate redshifts
table8             41      117   Further sample of 117 spirals
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Byte-by-byte Description of file: table2, table8
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   Bytes Format Units   Label     Explanations
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   1-  9  A9    ---     Name      Galaxy designation (NGC, IC or UGC)
  11- 13  A3    ---     Type      Numerical type
  16- 19  I4    km/s    cz        Heliocentric redshift from BGFP catalogue (1)
  22- 27  F6.2  deg     GLAT      Galactic longitude
  29- 34  F6.2  deg     GLON      Galactic longitude
  38- 41  I4    km/s    zgal      Galactic redshift (2)
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Note (1): In table2, data from BGFP catalogue (Bottinelli L., 
     Gouguenheim L., Fouque P. and Paturel G., 1990, A&AS, 82, 391  
     Catalogue <VII/136>).
     In table8, data from Green Bank data,
       Tifft W.G., Cocke W.J., 1988, ApJS, 67,1 =1988ApJS...67....1T
       Tifft W.G., 1990, ApJS, 73, 603          =1990ApJS...73..603T
       Tifft W.G., 1992, ApJS, 79, 183          =1992ApJS...79..183T
Note (2): calculated for the solar vector (233km/s, 93deg, 2deg) - see text
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(End)                                        Patricia Bauer [CDS]    1996-Feb-05