Name: Rotation Curves of High-Luminosity Spiral Galaxies and the Rotation Curve of our Galaxy
Creator: Vera C. Rubin
Keywords: 0103 physical sciences, 10. No inequality, 01 natural sciences, 6. Clean water

descriptionPublicationkeyboard_double_arrow_right Part of book or chapter of book , Article , Other literature type 01 Jan 1979 English Publisher:Springer NetherlandsJournal:Symposium - International Astronomical Union, volume 84, pages 211-220 (issn: 0074-1809,

Authors: Vera C. Rubin;

doi: 10.1007/978-94-009-9503-1_38 , 10.1017/s0074180900014492

Rotation Curves of High-Luminosity Spiral Galaxies and the Rotation Curve of our Galaxy

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Abstract

Rotation curves of high luminosity spiral galaxies are flat, to distances as great as r=49 kpc. This implies a significant mass at large r. Rotational velocities increase about 20 km/s across a spiral arm, as predicted by the density wave theory. By analogy, it is suggested that our Galaxy has a flat rotation curve out to r∼60 kpc, with V ∼ constant at near the solar rotational velocity, and m ∼7×1011 m⊙. Values of A and B imply that the sun is not located in a spiral arm.

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Carnegie Institution for Science
United States

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