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arxiv astro-ph/0003001 v1 pith:UPBIF2TX submitted 2000-03-01 astro-ph

The Baryonic Tully-Fisher Relation

Stacy McGaugh (U.Maryland) , Jim Schombert , Greg Bothun (U. Oregon) , Erwin de Blok (ATNF) This is my paper
classification astro-ph
keywords relationgalaxiesmasstully-fisherbaryonicaddingappearsbelow
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We explore the Tully-Fisher relation over five decades in stellar mass in galaxies with circular velocities ranging over 30 < Vc < 300 km/s. We find a clear break in the optical Tully-Fisher relation: field galaxies with Vc < 90 km/s fall below the relation defined by brighter galaxies. These faint galaxies are however very gas rich; adding in the gas mass and plotting baryonic disk mass Md = M* + Mg in place of luminosity restores a single linear relation. The Tully-Fisher relation thus appears fundamentally to be a relation between rotation velocity and total baryonic mass of the form Md = A Vc^4.

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Cited by 6 Pith papers

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