Abstract:
The detection of high-density H I that is very likely to be interacting with Tycho's supernova remnant (SNR) is reported. The interstellar medium around the remnant was surveyed using high-resolution (∼ 13″) VLA archive observations in the 21 cm line of neutral hydrogen. We have found cold, dense gas at kinematic velocities compatible with the SNR, in excellent agreement with the locations where, based on earlier proper-motion expansion studies of the synchrotron emission, the shock front is expanding more slowly than most of the SNR shell. The site of lowest expansion velocity along the whole shell is coincident with a small H I clump observed as an absorption feature at v = - 51.5 km s-1, with a density in the range 160-325 cm-3. The clump seems to have been intercepted by the shock front in the recent past and has not yet undergone significant evaporation. Toward the western side of the SNR shell, which morphologically preserves spherical symmetry and expands at a higher rate, no H I features have been observed. We conclude that the presence of dense concentrations toward the east is currently slowing down the expansion of the shock front locally. These observations demonstrate that the properties of the local interstellar medium can affect the dynamical evolution of SNRs even at early stages.
Registro:
Documento: |
Artículo
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Título: | The environs of tycho's supernova remnant explored through the H I 21 centimeter line |
Autor: | Reynoso, E.M.; Velázquez, P.F.; Dubner, G.M.; Goss, W.M. |
Filiación: | Inst. Astronomia y Fis. del Espacio, C.C. 67, Sucursal 28, 1428 Buenos Aires, Argentina National Radio Astronomy Observatory, VLA, P.O. Box O, Socorro, NM 87801, United States
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Palabras clave: | ISM: clouds; ISM: H I; ISM: individual (3C 10 = Tycho's supernova); Supernova remnants |
Año: | 1999
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Volumen: | 117
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Número: | 4
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Página de inicio: | 1827
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Página de fin: | 1833
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DOI: |
http://dx.doi.org/10.1086/300814 |
Título revista: | Astronomical Journal
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Título revista abreviado: | Astron. J.
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ISSN: | 00046256
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v117_n4_p1827_Reynoso |
Referencias:
- Albinson, J.S., Tuffs, R.J., Swinbank, E., Gull, S.F., (1986) MNRAS, 219, p. 427
- Baade, W., (1945) ApJ, 102, p. 309
- Black, J.H., Raymond, J.C., (1984) AJ, 89, p. 411
- Chevalier, R.A., Kirshner, R.P., Raymond, J.C., (1980) ApJ, 235, p. 186
- Chevalier, R.A., Raymond, J.C., (1978) ApJ, 225, pp. L27
- Dubner, G.M., Green, A., Goss, W.M., Bock, D.C.-J., Giacani, E.B., (1998) AJ, 116, p. 813
- Dubner, G.M., Holdaway, M., Goss, W.M., Mirabel, I.F., (1998) AJ, 116, p. 1842
- Gavamian, P., Raymond, J., Blair, W.P., Hartigan, P., (1999) ApJ, , submitted
- Kamper, K.W., Van Den Bergh, S., (1978) ApJ, 224, p. 851
- Keohane, J.W., Rudnick, L., Anderson, M.C., (1996) ApJ, 466, p. 309
- Koo, B.-C., Heiles, C., (1991) ApJ, 382, p. 204
- Reynoso, E.M., Dubner, G.M., Goss, W.M., Arnal, E.M., (1995) AJ, 110, p. 318
- Reynoso, E.M., Goss, W.M., , 1999. , in preparation; Reynoso, E.M., Moffett, D.A., Goss, W.M., Dubner, G.M., Dickel, J.R., Reynolds, S.P., Giacani, E.B., (1997) ApJ, 491, p. 816. , Paper I
- Roberts, D.A., (1972) ApJ, 173, p. 259
- Schwarz, U.J., Goss, W.M., Kalberla, P.M., Benaglia, P., (1995) A&A, 299, p. 193
- Smith, R.C., Kirshner, R.P., Blair, W.P., Winkler, P.F., (1991) ApJ, 375, p. 652
- Strom, R.G., (1983) IAU Symp. 101, Supernova Remnants and Their X-Ray Emission, 101, p. 37. , ed. I. J. Danziger & P. Gorenstein (Dordrecht: Reidel)
- Strom, R.G., Goss, W.M., Shaver, P.A., (1982) MNRAS, 200, p. 473
- Tan, S.M., Gull, S.F., (1985) MNRAS, 216, p. 949
- Velázquez, P.F., Gómez, D.O., Dubner, G.M., Giménez De Castro, C.G., Costa, A., (1998) A&A, 334, p. 1060
- Weaver, H., Williams, D.R.W., (1973) A&AS, 8, p. 1
- White, R.L., Long, K.S., (1991) ApJ, 373, p. 543
- Wilner, D.J., Reynolds, S.P., Moffett, D.A., (1998) AJ, 115, p. 247
Citas:
---------- APA ----------
Reynoso, E.M., Velázquez, P.F., Dubner, G.M. & Goss, W.M.
(1999)
. The environs of tycho's supernova remnant explored through the H I 21 centimeter line. Astronomical Journal, 117(4), 1827-1833.
http://dx.doi.org/10.1086/300814---------- CHICAGO ----------
Reynoso, E.M., Velázquez, P.F., Dubner, G.M., Goss, W.M.
"The environs of tycho's supernova remnant explored through the H I 21 centimeter line"
. Astronomical Journal 117, no. 4
(1999) : 1827-1833.
http://dx.doi.org/10.1086/300814---------- MLA ----------
Reynoso, E.M., Velázquez, P.F., Dubner, G.M., Goss, W.M.
"The environs of tycho's supernova remnant explored through the H I 21 centimeter line"
. Astronomical Journal, vol. 117, no. 4, 1999, pp. 1827-1833.
http://dx.doi.org/10.1086/300814---------- VANCOUVER ----------
Reynoso, E.M., Velázquez, P.F., Dubner, G.M., Goss, W.M. The environs of tycho's supernova remnant explored through the H I 21 centimeter line. Astron. J. 1999;117(4):1827-1833.
http://dx.doi.org/10.1086/300814