EDP Sciences
Free access
Issue
A&A
Volume 377, Number 3, October III 2001
Page(s) 1136 - 1144
Section Computational methods
DOI http://dx.doi.org/10.1051/0004-6361:20011116


A&A 377, 1136-1144 (2001)
DOI: 10.1051/0004-6361:20011116

A single explosion model for the supernova remnant 3C 400.2

P. F. Velázquez1, E. de la Fuente1, M. Rosado1 and A. C. Raga2

1  Instituto de Astronomía -Universidad Nacional Autónoma de México, Apdo. Postal 70-264, Ciudad Universitaria, C.P. 04510, México D.F., México
    e-mail: pablov, edfuente, margarit, raga@astroscu.unam.mx
2  Instituto de Ciencias Nucleares -Universidad Nacional Autónoma de México, Apdo. Postal 70-543, Ciudad Universitaria, C.P. 04510, México D.F., México

(Received 10 April 2001 / Accepted 31 July 2001 )

Abstract
We present a numerical simulation carried out in order to explain the complex morphology of the supernova remnant (SNR) 3C 400.2. Numerical simulations were done employing the new yguazú-a code (Raga et al. 2000). In the radio continuum, this remnant seems to be formed by two shells, which are partially overlapping (Dubner et al. 1994). Taking into account observational evidence such as a previous HI study (Giacani et al. 1998), we find that an adequate model for describing the morphology of the SNR 3C 400.2 is obtained by assuming that a single supernova (SN) explosion took place in a dense medium and close to an interface separating this medium from a lower density region. Besides, we also present a new deeper CCD H$\alpha$ image mosaic of the north-west region of this SNR, which is composed of three single images. From the numerical results, we generated H$\alpha$ emission maps, obtaining a good agreement with the observations.


Key words: ISM: supernova remnants -- supernovae individual 3C 400.2 -- hydrodynamics -- methods: numerical -- methods: observational

Offprint request: P. F. Velázquez, pablov@astroscu.unam.mx

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