Bibcode
Galbany, L.; Anderson, J. P.; Rosales-Ortega, F. F.; Kuncarayakti, H.; Krühler, T.; Sánchez, S. F.; Falcón-Barroso, J.; Pérez, E.; Maureira, J. C.; Hamuy, M.; González-Gaitán, S.; Förster, F.; Moral, V.
Referencia bibliográfica
Monthly Notices of the Royal Astronomical Society, Volume 455, Issue 4, p.4087-4099
Fecha de publicación:
2
2016
Número de citas
102
Número de citas referidas
97
Descripción
We present a statistical analysis of the environments of 11 supernovae
(SNe) which occurred in six nearby galaxies (z ≲ 0.016). All
galaxies were observed with MUSE, the high spatial resolution
integral-field spectrograph mounted to the 8 m VLT UT4. These data
enable us to map the full spatial extent of host galaxies up to ˜3
effective radii. In this way, not only can one characterize the specific
host environment of each SN, one can compare their properties with
stellar populations within the full range of other environments within
the host. We present a method that consists of selecting all H II
regions found within host galaxies from 2D extinction-corrected Hα
emission maps. These regions are then characterized in terms of their
Hα equivalent widths, star formation rates and oxygen abundances.
Identifying H II regions spatially coincident with SN explosion sites,
we are thus able to determine where within the distributions of host
galaxy e.g. metallicities and ages each SN is found, thus providing new
constraints on SN progenitor properties. This initial pilot study using
MUSE opens the way for a revolution in SN environment studies where we
are now able to study multiple environment SN progenitor dependencies
using a single instrument and single pointing.