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Title:
High-resolution images of shocked molecular clumps in the supernova remnant IC 443
Authors:
Tauber, Jan A.; Snell, Ronald L.; Dickman, Robert L.; Ziurys, L. M.
Affiliation:
AA(Univ. of California, Berkeley, CA, US), AB(Univ. of California, Berkeley, CA, US), AC(Univ. of Massachusetts, Amherst, MA, US), AD(Univ. of Massachusetts, Amherst, MA, US)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 421, no. 2, p. 570-580 (ApJ Homepage)
Publication Date:
02/1994
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
FORMYL IONS, HYDRODYNAMICS, INTERSTELLAR CHEMISTRY, INTERSTELLAR GAS, MOLECULAR CLOUDS, SHOCK WAVE INTERACTION, SHOCK WAVES, SUPERNOVA REMNANTS, ASTRONOMICAL INTERFEROMETRY, ASTRONOMICAL MAPS, STAR FORMATION
DOI:
10.1086/173672
Bibliographic Code:
1994ApJ...421..570T

Abstract

We present high angular resolution interferometric observations of HCO(+) J = 1 goes to 0 line emission from two molecular clumps which are being shocked by the blast wave from the supernova which formed the remnant IC 443. Our observations show that a range of gas densities exist within these clumps; this fact may explain the mixture of shock velocities inferred from other observations. Previous studies have shown evidence that molecular material is being accelerated by the blast wave in a systematic fashion around one of the clumps that we study. We show that this phenomenon also occurs at the small spatial scales that we observe. In addition, we present evidence that suggests that the velocity field may correspond to ablation from or a bow shock around the denser cores present within the clumps.

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