Abstract
The distance modulus of the Virgo cluster has been reexamined based on the Tully-Fisher relation between fully corrected B. 0 1 values and 21 cm velocity width derived from RC3 catalogue for spiral galaxies of Sbc-Sdm types, belonging to the “low-velocity” Virgo subcluster, singled out according to the statistical method proposed by Anosova, and led to the value μ = 31.15 ± 0.57 mag. A strong dependence of the intrinsic scatter in the Tully-Fisher relation on the apparent axes ratio of galaxies has been found, with a value of 0.4 mag for strongly flattened, highly inclined galaxies and galaxies with small inclinations and a value of 0.72 mag for objects with intermediate values of axes ratio. The restriction to samples only with galaxies with photoelectric observations does not lead to a considerable change of amplitude of scatter and decreases the value the of distance modulus.
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Published in Astrofizika, Vol. 42, No. 1, pp. 37–46, January–March, 1999.
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Borchkhadze, T.M., Kogoshvili, N.G. Concerning the errors arising through the use of Tully-Fisher relation for estimation of the Virgo cluster distance. Astrophysics 42, 25–32 (1999). https://doi.org/10.1007/BF02700910
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DOI: https://doi.org/10.1007/BF02700910