SNR VRO 42.05.01 (G 166.0 +4.3) 3-D morpho-kinematical model
Abstract
We present the first 3-dimensional (3-D) morpho-kinematical model of a supernova remnant (SNR), using as a study case the Galactic SNR VRO 42.05.01 (G 166.0 +4.3). Its 3-D representation provides us with the information in the third dimension, which is completely absent in the 2-D imaging data. This will significantly contribute to our understanding of its evolutionary history which still remains unknown. For the purpose of our model, the astronomical code ``SHAPE'' was employed in which low and high resolution imaging and spectroscopic data were utilized. We assume that the VRO's current morphology was shaped by the interaction of the remnant with a bow-shaped wind bubble. In the framework of this model, the SNR comprises by three basic components: a hemisphere in the NE region (``shell''), an elongated structure from SE to NW (``wing'') and a smaller hemisphere in the SW area (``hat''). We found that in our model: a) The synthetic Position Velocity (PV) diagrams created with ``SHAPE'' and correspond to the produced 3-D structure of the remnant, are in very good agreement with the observational PVs deduced from the spectroscopic analysis. b) The systemic velocity of the remnant is within the range of -15 km s-1 to -25 km s-1. c) The ``wing'' component of the SNR has lower expansion velocities than the ``shell'' and ``hat'' counterparts.
- Publication:
-
Supernova Remnants: An Odyssey in Space after Stellar Death II
- Pub Date:
- June 2019
- Bibcode:
- 2019sros.confE..16D