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Abstrakty
VFTS 682, a very massive and very hot Wolf-Rayet (WR) star recently discovered in the Large Magellanic Cloud near the famous star cluster R136, might be providing us with a glimpse of a missing link in our understanding of Long Gamma-Ray Bursts (LGRBs), including dark GRBs. It is likely its properties result from chemically homogeneous evolution (CHE), believed to be a key process for a massive star to become a GRB. It is also heavily obscured by dust extinction, which could make it a dark GRB upon explosion. Using Spitzer data we investigate the properties of interstellar dust in the vicinity of R136, and argue that its high obscuration is not unusual for its environment and that it could indeed be a slow runaway (``walkaway'') from R136. Unfortunately, based on its current mass loss rate, VFTS 682 is unlikely to become a GRB, because it will lose too much angular momentum at its death. If it were to become a GRB, it probably would also not be dark, either escaping or destroying its surrounding dusty region. Nevertheless, it is a very interesting star, deserving further studies, and being one of only three presently identified WR stars (two others in the Small Magellanic Cloud) that seems to be undergoing CHE.
Czasopismo
Rocznik
Tom
Strony
23--32
Opis fizyczny
Bibliogr. 44 poz., rys.
Twórcy
autor
- Department of Astronomy, The Ohio State University, 140 W. 18th Ave., Columbus, OH, 43210, USA
autor
- Department of Astronomy, The Ohio State University, 140 W. 18th Ave., Columbus, OH, 43210, USA
- enter for Cosmology and Astro-Particle Physics, The Ohio State University, 191 West Woodruff Ave., Columbus, OH, 43210, USA
Bibliografia
- Akerlof, C.W., and Swan, H.F. 2007, ApJ, 671, 1868.
- Banerjee, S., Kroupa, P., and Oh, S. 2012, ApJ, 746, 15.
- Bestenlehner, J.M., et al. 2011, A&A, 530, L14.
- Brott, I., et al. 2011, A&A, 530, 115.
- Crowther, P.A. et al. 2010, MNRAS, 408, 731.
- Filippenko, A.V., and Sargent, W.L.W. 1985, Nature, 316, 407.
- Gräfener, G., and Hamann, W.-R. 2008, A&A, 482, 945.
- Gräfener, G., Vink, J.S., de Koter, A., and Langer, N. 2011, A&A, 535, 56.
- Hjorth, J., et al. 2003, Nature, 423, 847.
- Kawada, M., et al. 2011, PASJ, 63, 903.
- Kochanek, C.S., Beacom, J.F., Kistler, M.D., Prieto, J.L., Stanek, K.Z., Thompson, T.A., and Yüksel, H. 2008, ApJ, 684, 1336.
- Kunkel, W., et al. 1987, IAU Circ., 4316.
- Lee, W.H., Wijers, R.A.M.J., and Brown, G.E. 2000, Phys. Rep., 325, 83.
- Levesque, E.M., Kewley, L.J., Berger, E., and Zahid, H.J. 2010, AJ, 140, 1557.
- Maeder, A., and Meynet, G. 2000, Ann. Rev. Astron. and Astrophys., 38, 143.
- Martins, F., Hillier, D.J., Bouret, J.C., Depagne, E., Foellmi, C., Marchenko, S., and Moffat, A.F. 2009, A&A, 495, 257.
- Meixner, M., et al. 2006, AJ, 132, 2268.
- Mészáros, P., and Rees, M.J. 2001, ApJ, 556, L37.
- Meynet, G., and Maeder, A. 2000, A&A, 361, 101.
- Meynet, G., and Maeder, A. 2007, A&A, 464, L11.
- Modjaz, M., et al. 2008, AJ, 135, 1136.
- Nomoto, K., Tominaga, N., Umeda, H., Maeda, K., Ohkubo, T., Deng, J., and Mazzali, P.A. 2005, in: ASP Conf. Ser., 332, “The Fate of the Most Massive Stars”, Ed. R. Humphreys and K. Stanek (San Francisco, CA: ASP), 374.
- Perley, D.A., et al. 2009, AJ, 138, 1690.
- Perna, R., and Loeb, A. 1998, ApJ, 501, 467.
- Pejcha, O., and Stanek, K.Z. 2009, ApJ, 704, 1730.
- Podsiadlowski, P., Langer, N., Poelarends, A.J.T., Rappaport, S., Heger, A., and Pfahl, E. 2004, ApJ, 612, 1044.
- Prieto, J.L., et al. 2008, ApJ, 681, L9.
- Prieto, J.L. 2008, ATel, 1550, 1.
- Reichart, D.E., and Price, P.A. 2002, ApJ, 565, 174.
- Sakamoto, T., et al. 2011, ApJS, 195, 2.
- Schady, P., et al. 2007, MNRAS, 377, 273.
- Schwarzschild, M. 1958, “Structure and evolution of the stars” (Princeton: Princeton University Press).
- Smartt, S.J., Eldridge, J.J., Crockett, R.M., and Maund, J.R. 2009, MNRAS, 395, 1409.
- Stanek, K.Z., et al. 2003, ApJ, 591, L17.
- Stanek, K.Z., et al. 2006, Acta Astron., 56, 333.
- Stetson, P.B. 1992, in: ASP Conf. Ser., 25, “Astronomical Data Analysis Software and Systems I”, Ed. D. M. Worrall, C. Biemesderfer, and J. Barnes (San Francisco, CA: ASP), 297.
- Szczygieł, D.M., Gerke, J.R., Kochanek, C.S., and Stanek, K.Z. 2011, ApJ, 747, 23.
- Vink J.S., de Koter A., and Lamers H.J.G.L.M. 2001, A&A, 369, 574.
- Waxman, E., and Draine, B.T. 2000, ApJ, 537, 796.
- White, G.L., and Malin, D.F. 1987, Nature, 327, 36.
- Woosley, S.E., and Heger, A. 2006, ApJ, 637, 914.
- Yoon, S.-C., and Langer, N. 2005, A&A, 443, 643.
- Yoon, S.-C., Langer, N., and Norman, C. 2006, A&A, 460, 199.
- Yungelson, L.R., van den Heuvel, E.P.J., Vink, J.S., Portegies Zwart, S.F., and de Koter, A. 2008, A&A, 477, 223.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-e616131f-eab5-4200-b97b-657f8a806db8