English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The Galactic supernova remnant (SNR) IC443 is one of the most studiedcore-collapse SNRs for its interaction with molecular clouds. However, theambient molecular clouds with which IC443 is interacting have not beenthoroughly studied and remain poorly understood. Using Five College RadioAstronomy Observatory 14m telescope, we obtained fully sampled maps of ~1{\deg} \times 1{\deg} region toward IC443 in the 12CO J=1-0 and HCO+ J=1-0lines. In addition to the previously known molecular clouds in the velocityrange v_lsr = -6 to -1 km/s (-3 km/s clouds), our observations reveal two newambient molecular cloud components: small (~ 1') bright clouds in v_lsr = -8 to-3 km/s (SCs), and diffuse clouds in v_lsr = +3 to +10 km/s (+5 km/s clouds).Our data also reveal the detailed kinematics of the shocked molecular gas inIC443, however the focus of this paper is the physical relationship between theshocked clumps and the ambient cloud components. We find strong evidence thatthe SCs are associated with the shocked clumps. This is supported by thepositional coincidence of the SCs with shocked clumps and other tracers ofshocks. Furthermore, the kinematic features of some shocked clumps suggest thatthese are the ablated material from the SCs upon the impact of the SNR shock.The SCs are interpreted as dense cores of parental molecular clouds thatsurvived the destruction by the pre-supernova evolution of the progenitor staror its nearby stars. We propose that the expanding SNR shock is now impactingsome of the remaining cores and the gas is being ablated and acceleratedproducing the shocked molecular gas. The morphology of the +5 km/s cloudssuggests an association with IC443. On the other hand, the -3 km/s clouds showno evidence for interaction.

Identification of Ambient Molecular Clouds Associated with Galactic Supernova Remnant IC443