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Meyer, D. M-A., Langer, N., Mackey, J., Velazquez, P. F. and Gusdorf, A. (2015). Asymmetric supernova remnants generated by Galactic, massive runaway stars. Mon. Not. Roy. Astron. Soc., 450 (3). S. 3080 - 3101. OXFORD: OXFORD UNIV PRESS. ISSN 1365-2966

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Abstract

After the death of a runaway massive star, its supernova shock wave interacts with the bow shocks produced by its defunct progenitor, and may lose energy, momentum and its spherical symmetry before expanding into the local interstellar medium (ISM). We investigate whether the initial mass and space velocity of these progenitors can be associated with asymmetric supernova remnants. We run hydrodynamical models of supernovae exploding in the pre-shaped medium of moving Galactic core-collapse progenitors. We find that bow shocks that accumulate more than about 1.5 M-aS (TM) generate asymmetric remnants. The shock wave first collides with these bow shocks 160-750 yr after the supernova, and the collision lasts until 830-4900 yr. The shock wave is then located 1.35-5 pc from the centre of the explosion, and it expands freely into the ISM, whereas in the opposite direction it is channelled into the region of undisturbed wind material. This applies to an initially 20 M-aS (TM) progenitor moving with velocity 20 km s(-1) and to our initially 40 M-aS (TM) progenitor. These remnants generate mixing of ISM gas, stellar wind and supernova ejecta that is particularly important upstream from the centre of the explosion. Their light curves are dominated by emission from optically thin cooling and by X-ray emission of the shocked ISM gas. We find that these remnants are likely to be observed in the [O iii] lambda 5007 spectral line emission or in the soft energy-band of X-rays. Finally, we discuss our results in the context of observed Galactic supernova remnants such as 3C 391 and the Cygnus Loop.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Meyer, D. M-A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Langer, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mackey, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Velazquez, P. F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Gusdorf, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-399988
DOI:	10.1093/mnras/stv898
Journal or Publication Title:	Mon. Not. Roy. Astron. Soc.
Volume:	450
Number:	3
Page Range:	S. 3080 - 3101
Date:	2015
Publisher:	OXFORD UNIV PRESS
Place of Publication:	OXFORD
ISSN:	1365-2966
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ANISOTROPIC THERMAL CONDUCTION; WIND BOW-SHOCKS; X-RAY; MAGNETIC-FIELD; RING NEBULAE; NUMERICAL SIMULATIONS; CIRCUMSTELLAR MEDIUM; RED SUPERGIANTS; CYGNUS LOOP; EVOLUTION Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/39998