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  • Publication . Article . 1999
    Authors: 
    Eric D. Miller; Patricia M. Knezek; Joel N. Bregman;
    Publisher: American Astronomical Society

    A difficulty of studying damped Lyα systems is that they are distant, so one knows little about the interstellar medium of the galaxy. Here we report on a damped Lyα system in the nearby galaxy NGC 4203, which is so close (vhelio = 1117 km s-1) and bright (B0 = 11.62) t...

  • Publication . Preprint . Article . 1998
    Open Access
    Authors: 
    Miller, E. D.; Knezek, P. M.; Joel Bregman;

    A difficulty of studying damped Lyman alpha systems is that they are distant, so one knows little about the interstellar medium of the galaxy. Here we report upon a damped Lyman alpha system in the nearby galaxy NGC 4203, which is so close (v_helio = 1117 km/s) and brig...

  • Publication . Article . Preprint . 2000
    Open Access English
    Authors: 
    Christiaan Hofman; Whee Ky Ma;
    Country: Netherlands

    Deformations of topological open string theories are described, with an emphasis on their algebraic structure. They are encoded in the mixed bulk-boundary correlators. They constitute the Hochschild complex of the open string algebra -- the complex of multilinear maps o...