GEMINI 3 D spectroscopy of BAL + IR + Fe II QSOs : II . IRAS 04505 − 2958 an explosive QSO with hypershells and a new scenario for galaxy formation and galaxy end

From a study of BAL + IR + Fe ii QSOs (using deep Gemini GMOS-IFU spectroscopy) new results are presented, for IRAS 04505−2958. Specifically, we have studied in detail the outflow (OF) process, at two large galactic scales: (i) two blobs/shells at radius r ∼1.1 and 2.2 kpc; and (ii) an external hypergiant shell at r ∼11 kpc. In addition, the presence of two very extended hypergiant shells at r ∼60–80 kpc is discussed. From this GMOS study the following main results were obtained: (i) For the external hypergiant shell the kinematics GMOS maps of the ionized gas ([O ii], [Ne iii], [O iii], Hβ) show a small scale bipolar OF, with similar properties to those observed in the prototype of exploding external super shell: NGC 5514. (ii) Three main knots –of this hyper shell S3– show the presence of a young starburst. (iii) The two internal shells show OF components with typical properties of nuclear shells. (iv) The two blobs and the hyper shell are aligned at PA ∼ 131◦ showing bipolar OF shape, at ∼10–15 kpc scale. In addition, the more external shells (at ∼60–80 kpc scale) are aligned at PA ∼ 40◦ with also bipolar OF shape (perpendicular to the more internal OF). (v) A strong blue continuum and multiple emission line components were detected in all the GMOS field. The new GMOS data show a good agreement with an extreme + explosive OF scenario for IRAS 04505-2958; in which part of the ISM of the host galaxy was ejected (in multiple shells). This extreme OF process could be also associated with two main processes in the evolution of QSOs: (i) the formation of companion/satellite galaxies by giant explosions; and (ii) to define the final mass of the host galaxy, and even if the explosive nuclear outflow is extremely energetic, this process could disrupt an important fraction of the host galaxy. Finally, the generation of UHE cosmic rays and neutrino/dark–matter –associated with HyNe in explosive BAL + IR + Fe ii QSOs– is discussed.