Study of the NGC 2770 interstellar medium through H(alpha), millimetric and optical polarimetric data of SN 2008D and SN 2007uy

TY - JOUR

T1 - Study of the NGC 2770 interstellar medium through H(alpha), millimetric and optical polarimetric data of SN 2008D and SN 2007uy

AU - Gorosabel, J.

AU - Ugarte Postigo, Antonio de

AU - Fynbo, Johan Peter Uldall

AU - Michalowski, Michal

AU - Thöne, Christina

PY - 2011/4/15

Y1 - 2011/4/15

N2 - We present the preliminary results of the recent H α 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 H α 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 H α 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 H α 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 H α 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 H α 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 H α 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 H α 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 - Journal article

SN - 0273-1177

VL - 47

SP - 1421

EP - 1426

JO - Advances in Space Research

JF - Advances in Space Research

IS - 8

ER -