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SiO maser survey of evolved stars in the Galaxy: various environments of maser sources

Published online by Cambridge University Press:  01 March 2007

Shuji Deguchi*
Affiliation:
Nobeyama Radio Observatory, National Astronomical Observatory, Minamimaki, Minamisaku, Nagano, 384-1305, Japan email: [email protected] Graduate University for Advanced Studies, National Astronomical Observatory, Minamimaki, Minamisaku, Nagano, 384-1305, Japan
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Abstract

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Using the SiO J=1−0 v=1 and v=2 lines near 43 GHz, we have detected about 2000 of 3600 sources observed with the Nobeyama 45-m radio telescope. The sources were chosen from IRAS/MSX/2MASS catalogs using color-selection criteria to pick up mass-losing oxygen-rich AGB stars and some post-AGB objects. A number of interesting sources were also found: supergiants in a massive star cluster, a nova with light echo (V838 Mon), AGB stars in globular clusters, and AGB candidates associated with dwarf galaxies. With the exception of the stars in the massive open star cluster, these ‘unusual’ objects are associated with metal poor environments where mass losing oxygen-rich AGB stars are unexpected. It is inferred that these objects were created by stellar merging which can occur in dense star clusters.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

Afsar, M. & Bond, H. E. 2007, AJ, 133, 387CrossRefGoogle Scholar
Bica, E., Dutra, C. M., Soares, J., & Barbuy, B. 2003, A&A, 404, 223Google Scholar
Blommaert, J. A. D. L., van Langevelde, H. J., & Michiels, W. F. P. 1994, A&Ap 287, 479Google Scholar
Bond, H. E., et al. 2003, Nature 422, 405CrossRefGoogle Scholar
Deguchi, S., Nakada, Y., & Sahai, R. 1990, A&A, 230, 339Google Scholar
Deguchi, S., Fujii, T., Miyoshi, M., & Nakashima, J. 2002, PASJ, 54, 61CrossRefGoogle Scholar
Deguchi, S., Nakashima, J., & Balasubramanyam, R. 2001, PASJ, 53, 305CrossRefGoogle Scholar
Deguchi, S., et al. 2004a, PASJ, 56, 261CrossRefGoogle Scholar
Deguchi, S., et al. 2004b, PASJ, 56, 765CrossRefGoogle Scholar
Deguchi, S., Matsunaga, N., & Fukushi, H. 2005, PASJ, 57, L25CrossRefGoogle Scholar
Deguchi, S., et al. 2007, PASJ, 59, No. 3 (in press)Google Scholar
Egan, M. P., Price, S. D., Kraemer, K. E., Mizuno, D. R., Carey, S. J., Wright C. O., Engelke C. W., Cohen M., & Gugliotti, G. M. 2003, Air Force Research Laboratory Technical Report AFRL-VS-TR-2003-1589 available at http://vizier.nao.ac.jp/viz-bin/VizieR?-source=V/114Google Scholar
Figer, D. F., MacKenty, J., Robberto, M., Smith, K., Najarro,, F, Kudritzki, R. P., & Herrero, A. 2006, ApJ, 643, 1166CrossRefGoogle Scholar
Fujii, T., Deguchi, S., Ita, Y., Izumiura, H., Kameya, O., Miyazaki, A., & Nakada, Y. 2006, PASJ, 58, 529CrossRefGoogle Scholar
Ibata, R. A., Gilmore, G., & Irwin, M. J. 1994, Nature 370, 194CrossRefGoogle Scholar
Ibata, R., Irwin, M., Lewis, G., & Stolte, A. 2001a, ApJ, 547, L133CrossRefGoogle Scholar
Ibata, R., Lewis, G., Irwin, M., Totten, E., & Quinn, T. 2001b, ApJ, 551, 294CrossRefGoogle Scholar
Iben, I. Jr., 1981, ApJ 246, 278CrossRefGoogle Scholar
Ita, Y., Deguchi, S., Fujii, T., Kameya, O., Miyoshi, M., Nakada, Y., Nakashima, J., & Parthasarathy, M. 2001, AAp, 376, 112Google Scholar
Jiang, B. W., Deguchi, S., Yamamura, I., Nakada, Y., Cho, S. H., & Yamagata, T. 1996, ApJs 106, 463CrossRefGoogle Scholar
Lombardi, J. C., Thrall, A. P., Deneva, J. S., Fleming, S. W., Grabowski, P. E. 2003, MNRAS, 345, 762CrossRefGoogle Scholar
Majewski, S. R., Skrutskie, M. F., Weinberg, M. D., & Ostheimer, J. C. 2003, ApJ, 599, 1082CrossRefGoogle Scholar
Majewski, S. R. et al. , 2004, ApJ, 128, 245CrossRefGoogle Scholar
Martin, N. F., Ibata, R. A., Bellazzini, M., Irwin, M. J., Lewis, G. F., & Dehnen, W. 2004, MNRAS, 348, 12CrossRefGoogle Scholar
Martin, N. F., Ibata, R. A., Conn, B.C., Lewis, G. F., Bellazzini, M., & Irwin, M. J. 2005, MNRAS, 362, 906CrossRefGoogle Scholar
Matsunaga, N., Deguchi, S., Ita, Y., Tanabe, T., & Nakada, Y. 2005, PASJ, 57, L1CrossRefGoogle Scholar
Miyazaki, A., Deguchi, S., Tsuboi, Ma., Kasuga, T., & Takano, S. 2001, PASJ, 53, 501CrossRefGoogle Scholar
Munari, U., et al. 2002, A&A, 389, L51Google Scholar
Nakashima, J., & Deguchi, S. 2003, PASJ, 55, 203CrossRefGoogle Scholar
Nakashima, J., & Deguchi, S. 2006, ApJL, 647, L139CrossRefGoogle Scholar
Nishiyama, S., Nagata, T., Kusakabe, N. et al. 2006, ApJ, 638, 839CrossRefGoogle Scholar
Piotto, G. et al. 2004, ApJ, 604, L109CrossRefGoogle Scholar
Soker, N., & Tylenda, R. 2003, ApJ, 582, L105CrossRefGoogle Scholar
Sevenster, M. N., Chapman, J. M., Habing, H. J., Killeen, N. E. B., & Lindqvist, M. 1997, A&AS, 122, 79Google Scholar
Tylenda, R. & Soker, N. 2006, A&A, 451, 223Google Scholar
van der Veen, W. E. C. J., & Habing, H. 1988, A&A, 194, 125Google Scholar
van Loon, J. T., Zijlstra, A. A., Bujarrabal, V., & Nyman, L.-Å. 1996, A&A, 306, L29Google Scholar