Burchett, Joseph N.Tripp, Todd M.Werk, Jessica K.Howk, J. ChristopherDave, RomeelProchaska, J. XavierFord, Amanda Brady2016-04-132016-04-132013Burchett, J.N. et al. (2013). A deep search for faint galaxies associated with very low-redshift C iv absorbers: A case with cold-accretion characteristics. Astrophysical Journal Letters, 779:L72041-8205http://hdl.handle.net/10566/2115Studies of QSO absorber–galaxy connections are often hindered by inadequate information on whether faint/dwarf galaxies are located near the QSO sight lines. To investigate the contribution of faint galaxies to QSO absorber populations, we are conducting a deep galaxy redshift survey near low-z Civ absorbers. Here we report a blindly detected C iv absorption system (zabs = 0.00348) in the spectrum of PG1148+549 that appears to be associated either with an edge-on dwarf galaxy with an obvious disk (UGC 6894, zgal = 0.00283) at an impact parameter of ρ = 190 kpc or with a very faint dwarf irregular galaxy at ρ = 23 kpc, which is closer to the sightline but has a larger redshift difference (zgal = 0.00107, i.e., δv = 724 km s−1). We consider various gas/galaxy associations, including infall and outflows. Based on current theoretical models, we conclude that the absorber is most likely tracing (1) the remnants of an outflow from a previous epoch, a so-called “ancient outflow”, or (2) intergalactic gas accreting onto UGC 6894, “cold mode” accretion. The latter scenario is supported by Hi synthesis imaging data that shows the rotation curve of the disk being codirectional with the velocity offset between UGC 6894 and the absorber, which is located almost directly along the major axis of the edge-on disk.enAAS grants back to authors the non-exclusive right of republication, subject only to giving appropriate credit to the journal in which the article was published. This non-exclusive right of republication gives authors the right to approve or deny reproduction of all or part of the article and to post the final published version online.GalaxiesGalaxies evolutionDwarfIntergalactic mediumQuasarsArticle