Artículo
Abstract:
A field of 2° sq. centered on the position HD 197406 (a spectroscopic binary composed of a WN7 star + unseen companion), has been surveyed in the H I 21 cm line and in the 1420 and 408 MHz radio continuum, using the synthesis radio telescope of the Dominion Radio Astrophysical Observatory (Canada). The spectral maps show the existence of a nearly complete ring-shaped H I shell (Rs ≅s 18 pc, νexp ≅ 6 km s-1, script M signet;H I ≅ 1200script M sign⊙) and, immersed within this shell, a small spherical bubble concentric with the star (Rb ≅4 pc, νexp ≅6 km s-1, script M signH I (missing) ≅ 8script M sign⊙). From these observations, a kinematical distance of 4.5 kpc is derived for HD 197406. At this distance, the binary has Mv≅ - 5.4 mag. The large H I shell is also detected at infrared wavelengths, as shown by the 60 and 100 μm IRAS images. We found neither thermal nor nonthermal radio sources associated with the binary system. Our observations suggest that the large shell has been created during previous evolutionary stages of the binary, while the small bubble has been recently blown by the WR wind.
Registro:
| Documento: | Artículo |
| Título: | A stellar wind blown bubble associated with the wolf-rayet star HD 197406 |
| Autor: | Dubner, G.M.; Niemela, V.S.; Purton, C.R. |
| Filiación: | Inst. Astronomía y Fis. E., Casilla de Correo 67, Sucursal 28, 1428 Buenos Aires, Argentina Dominion Radio Astrophysical Observ., National Research Council of Canada, P. O. Box 248, Penticton, BC V2A 6K3, Canada Carrera del Investigador Cietifico, CONICET, Argentina Carrera del Investigador Cietifico, CIC, Buenos Aires, Argentina |
| Año: | 1990 |
| Volumen: | 99 |
| Número: | 3 |
| Página de inicio: | 857 |
| Página de fin: | 868 |
| DOI: | http://dx.doi.org/10.1086/115379 |
| Título revista: | Astronomical Journal |
| Título revista abreviado: | Astron. J. |
| ISSN: | 00046256 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046256_v99_n3_p857_Dubner |
Referencias:
- Abbott, D.C., Bieging, J.H., Churchwell, E., Torres, A.V., (1986) Astrophys. J., 303, p. 239
- Blitz, L., (1983) Science, 220, p. 1233
- Bolton, C.T., Rogers, G.L., (1978) Astrophys. J., 222, p. 234
- Boulanger, F., Pérault, M., (1988) Astrophys. J., 330, p. 964
- Burton, W.B., (1985) Astron. Astrophys. Suppl. Ser., 62, p. 365
- Cappa De Nicolau, C.E., Niemela, V.S., (1984) Astron. J., 89, p. 1398. , Paper I
- Cappa De Nicolau, C.E., Niemela, V.S., Arnal, E.M., (1986) Astron. J., 92, p. 1414. , Paper II
- Cappa De Nicolau, C.E., Niemela, V.S., Dubner, G.M., Arnal, M.E., (1988) Astron. J., 96, p. 1671. , Paper III
- Chu, Y.-H., Treffers, R.R., Kwitter, K.B., (1983) Astrophys. J. Suppl., 53, p. 937
- Conti, P.S., Leep, E.M., Perry, D.N., (1983) Astrophys. J., 268, p. 228
- Drissen, L., Lamontagne, R., Moffat, A.F.J., Bastien, P., Seguin, M., (1986) Astrophys. J., 304, p. 188
- Garmany, C.D., Olson, G.L., Conti, P.S., Van Steenburg, M., (1981) Astrophys. J., 250, p. 660
- Hardorp, I., Rohlfs, K., Stock, J., Slettebak, A., (1959) Luminous Stars in the Northern Milky Way, , Microfiche 3015 (Reference III-15) (Centre de Donnees Stellaires, Strasbourg)
- Haslam, C.G.T., Salter, C.J., Stoffel, H., Wilson, W.E., (1982) Astron. Astrophys. Suppl. Ser., 47, p. 1
- Lundstrom, I., Stenholm, B., (1984) Astron. Astrophys. Suppl. Ser., 58, p. 163
- Massey, P., (1984) Astrophys. J., 281, p. 789
- Moffat, A.F.J., Firmani, C., McLean, I.S., Seggewiss, W., (1982) Wolf-Rayet Stars: Observations, Physics, Evolution, p. 577. , IAU Symposium No. 99, edited by C. W. H. de Loore and A. J. Willis (Reidel, Dordrecht)
- Moffat, A.F.J., Seggewiss, W., (1980) Astron. Astrophys., 86, p. 87
- Pollock, A.T., (1987) Astrophys. J., 320, p. 283
- Reich, W., (1982) Astron. Astrophys. Suppl. Ser., 48, p. 219
- Smith, L., (1973) Wolf-Rayet Stars and High Temperature Stars, p. 15. , IAU Symposium No. 49, edited by M. K. V. Bappu and J. Sahade (Reidel, Dordrecht)
- Spitzer, L., (1962) Physics of Fully Ionized Gases, 2nd Ed., p. 148. , Wiley Interscience, New York
- Treffers, R.R., Chu, Y.-H., (1982) Astrophys. J., 254, p. 569
- Tutukov, A.V., Cherepaschuk, A.M., (1986) Soviet Astron., 29, p. 654
- Vallée, J.P., Moffat, A.F.J., (1985) Astron. J., 90, p. 315
- Van Buren, D., McCray, R., (1988) Astrophys. J., 329, pp. L93
- Wright, A.E., Barlow, M.J., (1975) Mon. Not. R. Astron. Soc., 170, p. 41
Citas:
---------- APA ----------
Dubner, G.M., Niemela, V.S. & Purton, C.R. (1990) . A stellar wind blown bubble associated with the wolf-rayet star HD 197406. Astronomical Journal, 99(3), 857-868.http://dx.doi.org/10.1086/115379
---------- CHICAGO ----------
Dubner, G.M., Niemela, V.S., Purton, C.R. "A stellar wind blown bubble associated with the wolf-rayet star HD 197406" . Astronomical Journal 99, no. 3 (1990) : 857-868.http://dx.doi.org/10.1086/115379
---------- MLA ----------
Dubner, G.M., Niemela, V.S., Purton, C.R. "A stellar wind blown bubble associated with the wolf-rayet star HD 197406" . Astronomical Journal, vol. 99, no. 3, 1990, pp. 857-868.http://dx.doi.org/10.1086/115379
---------- VANCOUVER ----------
Dubner, G.M., Niemela, V.S., Purton, C.R. A stellar wind blown bubble associated with the wolf-rayet star HD 197406. Astron. J. 1990;99(3):857-868.http://dx.doi.org/10.1086/115379
