On the afterglow and host galaxy of GRB 021004: A comprehensive study with the Hubble Space Telescope

NBI, Astronomical Observatory, University of Copenhagen, Juliane Maries Vej 30, DK–2100 Copenhagen Ø, Denmark Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA Instituto de Astrof́ısica de Andalućıa, IAA-CSIC, Granada, Spain European Southern Observatory, Casilla 19001, Santiago 19, Chile Research Associate, National Fund for Scientific Research (FNRS), Belgium European Southern Observatory, Karl Scwarzschild-Strasse 2, D-85748 Garching bei München, Germany Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK Department of Physical Science, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, UK Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, USA NASA/Marshall Space Flight Center, National Space Science and Technology Center (NSSTC), SD-50, 320 Sparkman Drive, Huntsville, AL 35805, USA Astronomical Institute, University of Amsterdam, Kruislann 403, 1098 SJ Amsterdam, The Netherlands Department of Physics, University of Notre Dame, 225 Nieuwland Science Hall, Notre Dame, IN 46556, USA Swift Science Center, Goddard Space Flight Center, Code 660,1, Greenbelt, MD 20771-0003, USA Universities Space Research Association Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, 34131 Trieste, Italy Department of Physics and Astronomy, University of Aarhus, Ny Munkegade, DK-8000 Aarhus C