TY - JOUR
T1 - Study of the NGC 2770 interstellar medium through Hα, millimetric and optical polarimetric data of SN 2008D and SN 2007uy
AU - Gorosabel, J.
AU - de Ugarte Postigo, A.
AU - Castro-Tirado, A. J.
AU - Agudo, I.
AU - Jelínek, M.
AU - Leon, S.
AU - Augusteijn, T.
AU - Fynbo, J. P. U.
AU - Michałowski, M. J.
AU - Xu, D.
AU - Ferrero, P.
AU - Kann, D. A.
AU - Llorente, A.
AU - Bremer, M.
AU - Winters, J.-M.
AU - Thöne, C. C.
AU - Cepa, J.
PY - 2011/4/15
Y1 - 2011/4/15
N2 - We present the preliminary results of the recent Hα
narrow-band imaging carried out for NGC 2770 with the Gran Telescopio
Canarias (GTC) equipped with OSIRIS. We put the polarization
measurements reported in Gorosabel et al. (2010) for SN 2007uy and SN
2008D in the context of the morphological information inferred from the
Hα imaging. We estimated the orientation of the
interstellar polarization (ISP) at the position of SN 2007uy and, most
interestingly, at the site of SN 2008D which has been subject of an
intensive debate due to its possible connection with Gamma-Ray Bursts
(GRBs). The Hα imaging reveals a clumpy interstellar
medium (ISM) composed of hundreds of compact emitting regions, for which
we determined their sizes. The derived size for the Hα
emitting region coincident with SN 2008D is consistent with the ISM cell
size limits imposed by Gorosabel et al. (2010) based on millimetric
data. A deeper data analysis is under way and will be published
elsewhere. This article represents the first attempt to study the site
of a possible GRB-like event combining millimetric, polarimetric and
narrow-band data.
AB - We present the preliminary results of the recent Hα
narrow-band imaging carried out for NGC 2770 with the Gran Telescopio
Canarias (GTC) equipped with OSIRIS. We put the polarization
measurements reported in Gorosabel et al. (2010) for SN 2007uy and SN
2008D in the context of the morphological information inferred from the
Hα imaging. We estimated the orientation of the
interstellar polarization (ISP) at the position of SN 2007uy and, most
interestingly, at the site of SN 2008D which has been subject of an
intensive debate due to its possible connection with Gamma-Ray Bursts
(GRBs). The Hα imaging reveals a clumpy interstellar
medium (ISM) composed of hundreds of compact emitting regions, for which
we determined their sizes. The derived size for the Hα
emitting region coincident with SN 2008D is consistent with the ISM cell
size limits imposed by Gorosabel et al. (2010) based on millimetric
data. A deeper data analysis is under way and will be published
elsewhere. This article represents the first attempt to study the site
of a possible GRB-like event combining millimetric, polarimetric and
narrow-band data.
U2 - 10.1016/j.asr.2010.10.008
DO - 10.1016/j.asr.2010.10.008
M3 - Article
SN - 0273-1177
VL - 47
SP - 1421
EP - 1426
JO - Advances in Space Research
JF - Advances in Space Research
IS - 8
ER -