Bibcode
Lípari, S.; Bergmann, M.; Sanchez, S. F.; Garcia-Lorenzo, B.; Terlevich, R.; Mediavilla, E.; Taniguchi, Y.; Zheng, W.; Punsly, B.; Ahumada, A.; Merlo, D.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 398, Issue 2, pp. 658-700.
Advertised on:
9
2009
Número de citas
12
Número de citas referidas
12
Descripción
From a study of broad absorption line (BAL) + infrared (IR) + FeII
quasi-stellar objects (QSOs) [using deep Gemini Multi-Object
Spectrograph Integral Field Unit (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 also 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 ([OII], [NeIII], [OIII], Hβ) show a small-scale bipolar OF,
with similar properties to those observed in the prototype of exploding
external supershells: NGC 5514. (ii) Three main knots - of this
hypershell 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 hypershell 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°
also with 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 fields.
The new GMOS data show a good agreement with an extreme + explosive OF
scenario for IRAS 04505-2958, in which part of the interstellar medium
(ISM) of the host galaxy was ejected (in multiple shells). This extreme
OF could also be 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 OF is extremely energetic, this process
could disrupt an important fraction of the host galaxy. Finally, the
generation of ultra-high-energy cosmic rays and neutrino/dark matter -
associated with HyNe in explosive BAL + IR + FeII QSOs - is discussed.