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- W2034856417 abstract "view Abstract Citations (233) References (73) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Redshift-Distance Relation. IX. Perturbation of the Very Nearby Velocity Field by the Mass of the Local Group Sandage, A. Abstract The deceleration of the very local cosmological velocity field that is expected as a result of the mass of the Local Group is studied. It is shown that a deceleration may be present in the available data for galaxies and groups of galaxies with distances less than 10 Mpc. The effect is small, near the limit of detection, meaning that the velocity field is very nearly linear. The mass of the Local Group is less than 5×1012M_sun; from the available data and the deceleration method. The best fit to the data gives MLG = 4×1011M_sun;, giving a mass-to-light ratio of ≡3. Massive halos with M/L ⪆ 100 for either the Galaxy or for M31 are excluded by the data. The variation of the Hubble v/r ratio with distance is very small beyond 2 Mpc for any reasonable mass of the Local Group. This means that the decelerating effect of the Local Group cannot be invoked to explain any supposed large variation of H with distance locally. Publication: The Astrophysical Journal Pub Date: August 1986 DOI: 10.1086/164387 Bibcode: 1986ApJ...307....1S Keywords: Cosmology; Distance; Galactic Structure; Local Group (Astronomy); Red Shift; Velocity Distribution; Andromeda Galaxy; Deceleration; Equations Of Motion; Mass To Light Ratios; Astrophysics; COSMOLOGY; GALAXIES: LOCAL GROUP; GALAXIES: REDSHIFTS; GALAXIES: STRUCTURE full text sources ADS | data products SIMBAD (30) NED (29) Related Materials (9) Part 1: 1972ApJ...173..485S Part 2: 1972ApJ...178....1S Part 3: 1972ApJ...178...25S Part 4: 1973ApJ...180..687S Part 5: 1973ApJ...183..711S Part 6: 1973ApJ...183..731S Part 7: 1973ApJ...183..743S Part 8: 1975ApJ...202..563S Part 10: 1987ApJ...317..557S" @default.
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- W2034856417 date "1986-08-01" @default.
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- W2034856417 title "The redshift-distance relation. IX - Perturbation of the very nearby velocity field by the mass of the Local Group" @default.
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