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Mg II & C IV Kinematics vs. Stellar Kinematics in Galaxies

Chris Churchill·Chuck Steidel
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Abstract

Comparisons of the kinematics of Mg II absorbing gas and the stellar rotation curves in 0.5 < z < 1.0 spiral galaxies suggests that, at least in some cases, the extended gaseous envelopes may be dynamically coupled to the stellar matter. A strong correlation exists between the overall kinematic spread of Mg II absorbing gas and C IV absorption strength, and therefore kinematics of the higher-ionization gas. Taken together, the data may suggest a "halo/disk connection" between z~1 galaxies and their extended gaseous envelopes. Though the number of galaxies in our sample are few, there are no clear examples that suggest the gas is accreting/infalling isotropically about the galaxies from the intergalactic medium.

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Chris Churchill, Chuck Steidel. 2002-09-13. Mg II & C IV Kinematics vs. Stellar Kinematics in Galaxies. https://doi.org/10.1007/978-94-010-0115-1_26

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