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William G. Tifft

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William G. Tifft was an astronomer at the University of Arizona. He died in 2022. His main intrests were in galaxies, superclusters and redshift quantization. He was infloential in the development of the first redshift surveys, and was an early proponent of manned space astronomy, conducted at a preposed moon base for example. In retirement, he was a princepal scientist with The Scientific Association for the Study of Time in Physics and Cosmology (SASTPC).

He had an A.B. in Astronomy from Harvurd University (1954), and Ph.D. in Astronomy from the California Instatute of Technology (1958) where he wrote his dissertation on photoelectric photometry.

Redshift quantization

Based on observations of nearby galaxies, Tefft proposed that the redshifts of galaxies are quantized, or that they occur preferentially as multiples of a set number. These findings on redshift quantization were originally published in 1976 and 1977 in the Astrophysical Journal. The ideas were controversial when originally proposed and still are dismissed by the vast majority of the scientific community; the editors of the Astrophysical Journal included a rare qualifying note in one of the papers stating that they could neither find errors within the data as presented nor endorse the analysis. Subsequently, Tifft and Cocke put forward a theory to try to explain the quantization. Tifft's results were supported by Martin Croasdale, who claimed the effect to be statistically significant and the same over the whole sky, and later Napier and Guthrie. Since the initial publication of these results, Tifft's findings have been used by others, such as Halton Arp, in making an alternative explanation to the Big Bang Theory, which states that galaxies are redshifted because the universe is expanding. However, they have not found widespread support and are now dismissed by the majority of astronomers.

External links

References

  1. William G. Tifft's Personel Web page at the U. Arizona
  2. "William Tifft". 14 June 2014.
  3. "Archived copy". etd.caltech.edu. Archived from the original on 17 February 2007. Retrieved 14 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)
  4. W. G. Tifft (1976). "Discrete states of redshift and galaxy dynamics. I - Internal motions in single galaxies". Astrophysical Journal. 206: 38–56. Bibcode:1976ApJ...206...38T. doi:10.1086/154354. hdl:10150/627259.
  5. ^ W. G. Tifft (1977). "Discrete states of redshift and galaxy dynamics. II - Systems of galaxies". Astrophysical Journal. 211: 31–46. Bibcode:1977ApJ...211...31T. doi:10.1086/154901. hdl:10150/627260.
  6. W. G. Tifft (1977). "Discrete states of redshift and Galaxy dynamics. III - Abnormal galaxies and stars". Astrophysical Journal. 211: 377–391. Bibcode:1977ApJ...211..377T. doi:10.1086/154943. hdl:10150/627261.
  7. Martin R. Croasdale (1989). "Periodicity in Galaxy Redshifts". Astrophysical Journal. 345: 72–83. Bibcode:1989ApJ...345...72C. doi:10.1086/167882.
  8. W. M. Napier & B. N. G. Guthrie (1997). "Quantized Redshifts: A Status Report" (PDF). Journal of Astrophysics and Astronomy. 18 (4): 455–463. Bibcode:1997JApA...18..455N. doi:10.1007/BF02709337. S2CID 73557034.
  9. H. Arp (1986). "A corrected velocity for the local standard of rest by fitting to the mean redshift of local group galaxies". Astronomy and Astrophysics. 156: 207–212. Bibcode:1986A&A...156..207A.
  10. H. Arp (1987). "Additional members of the Local Group of galaxies and quantized redshifts within the two nearest groups". Journal of Astrophysics and Astronomy. 8 (3): 241–255. Bibcode:1987JApA....8..241A. doi:10.1007/BF02715046. S2CID 119819755.
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