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We present an initial survey of Mg II absorption characteristics in the halosof a carefully constructed, volume-limited subsample of galaxies embedded inthe spectroscopic part of the Sloan Digital Sky Survey. We observed quasarsnear sightlines to 20 low-redshift (z ~ 0.1), luminous M_r <= -20.5 galaxies inSDSS DR4 and DR6 with the LRIS-B spectrograph on the Keck I telescope. Theprimary systematic criteria for the targeted galaxies are a redshift z >~ 0.1and the presence of an appropriate bright background quasar within a projected75 kpc/h of its center, although we preferentially sample galaxies with lowerimpact parameters and slightly more star formation within this range. Of theobserved systems, six exhibit strong [EW(2796) >= 0.3 Ang.] Mg II absorption atthe galaxy's redshift, six systems have upper limits which preclude strong MgII absorption, while the remaining observations rule out very strong [EW(2796)>= 1-2 Ang] absorption. The absorbers fall at higher impact parameters thanmany non-absorber sightlines, indicating a covering fraction f_c <~ 0.4 for >=0.3-Angstrom absorbers at z ~ 0.1, even at impact parameters <= 35 kpc/h (f_c ~0.25). The data are consistent with a possible dependence of covering fractionand/or absorption halo size on the environment or star-forming properties ofthe central galaxy.

Mg II Absorption Characteristics of a Volume-Limited Sample of Galaxies at z ~ 0.1