[145.11] Galaxy-Halo Gas Kinematic Connection $0.3 < z

AAS 205th Meeting, 9-13 January 2005
Session 145 Intergalactic Media
Poster, Thursday, January 13, 2005, 9:20am-4:00pm, Exhibit Hall

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[145.11] Galaxy-Halo Gas Kinematic Connection 0.3 < z < 1

G. G. Kacprzak, C. W. Churchill (NMSU), C. C. Steidel (Caltech)

It is our goal to understand the stellar-halo gas kinematic connection in intermediate redshift galaxies. We aim to learn whether halos are relaxed and/or kinematically fueled via disk outflow episodes or whether they are not relaxed and possibly maintained by accretion/merger events. We have expanded a pilot study of five galaxies (Steidel et al. 2002, ApJ, 570, 526) to 30 galaxies with z < 1. Keck HIRES Mg II quasar absorption profiles are used to study the halo gas kinematics and WFPC-2 images along with Keck LRIS spectra of the galaxies used to study the stellar kinematics. GIM2D (Simard et al. 2002) was used to model galaxy morphology parameters. We have explored possible kinematic correlations with impact parameters, galaxy inclination and morphology and discuss the implications of the extended gaseous environments of galaxies.

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