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Discovery of a nearby spiral galaxy behind the Milky Way


THE disk of the Milky Way contains a lot of gas and dust, which obscures about 20% of the extragalactic sky. Galaxies hidden behind the Milky Way may have an important influence on the dynamics of the Local Group and its peculiar motion relative to the cosmic microwave background radiation1,2. Here we report the discovery of a large spiral galaxy, which we call Dwingeloo 1, during the course of a search for emission from atomic hydrogen (H I) associated with galaxies hidden by the disk of the Milky Way—such H I emission is not obscured by the disk if the velocity of the emission differs from that of the local gas3. The new galaxy seems to be associated with the group containing IC342 and the Maffei galaxies, and a subsequent optical image suggests that it is of type SBb. The detection of Dwingeloo 1 early in the course of this survey suggests that many more galaxies hidden behind the Milky Way remain to be discovered.

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  1. Kraan-Korteweg, R. C. in Proc. 2nd DAEC Meeting on the Distribution of Matter in the Universe (eds Mamon, G. & Gerbal, D.) 202–211 (Observatoire de Paris, Paris, 1993).

    Google Scholar 

  2. Lahav, O. in 4th DAEC Meeting (eds Balkowski, C. & Kraan-Korteweg, R. C. (Astr. Soc. Pacific Conf. Sen., San Francisco, in the press).

  3. Kerr, F. J. & Henning, P. A. Astrophys. J. 320, L99–L103 (1987).

    Article  ADS  CAS  Google Scholar 

  4. Burton, W. B. & Hartmann, D. in Proc. 4th DAEC Meeting (eds Balkowski, C. & Kraan-Korteweg, R. C.) (Astr. Soc. Pacific Conf. Ser., San Francisco, in the press).

  5. Maffei, P. Publs astr. Soc. Pacif. 80, 618–621 (1968).

    Article  ADS  Google Scholar 

  6. Kraan-Korteweg, R. C., Cameron, L. M. & Tammann, G. A. Astrophys. J. 331, 620–640 (1988).

    Article  ADS  CAS  Google Scholar 

  7. Burstein, D. & Heiles, C. Astr. J. 87, 1165–1189 (1982).

    Article  ADS  CAS  Google Scholar 

  8. Mihalas, D. & Binnèy, J. Galactic Astronomy; Structure and Dynamics 2nd edn 490 (Freeman, New York, 1981).

    Google Scholar 

  9. Van den Bergh, S. Nature 231, 35–36 (1971).

    Article  ADS  CAS  Google Scholar 

  10. Schmidt, K. H. & Boiler, T. Astr. Nachr. 313, 189–231 (1992).

    Article  ADS  Google Scholar 

  11. Peebles, P. J. E. Astrophys. J. 362, 1–13 (1990).

    Article  ADS  Google Scholar 

  12. Hurt, R. L., Merrill, K. M., Gatley, I. & Turner, J. L. Astr. J. 105, 121–127 (1993).

    Article  ADS  Google Scholar 

  13. Kahn, F. D. & Woltjer, L. Astrophys. J. 130, 705–717 (1959).

    Article  ADS  Google Scholar 

  14. Lynden-Bell, D. Observatory 101, 111–114 (1982).

    ADS  Google Scholar 

  15. Valtonen, M. J., Byrd, G. G., McCall, M. L. & Innanen, K. A. Astr. J. 105, 886–893 (1993).

    Article  ADS  Google Scholar 

  16. Raychaudhury, S. & Lynden-Bell, D. Mon. Not. R. astr. Soc. 240, 195–218 (1989).

    Article  ADS  Google Scholar 

  17. Dunn, A. M. & Laflamme, R. Mon. Not. R. astr. Soc. 264, 865–874 (1993).

    Article  ADS  Google Scholar 

  18. Lynden-Bell, D., Lahav, O. & Burstein, D. Mon. Not. R. astr. Soc. 241, 325–345 (1989).

    Article  ADS  Google Scholar 

  19. Strauss, M. A., Yahil, A., Davis, M., Huchra, J. P. & Fisher, K. Astrophys. J. 397, 395–419 (1992).

    Article  ADS  Google Scholar 

  20. Sandage, A. Astrophys. J. 307, 1–19 (1986).

    Article  ADS  Google Scholar 

  21. Buta, R. J. & McCall, M. J. Mon. Not. R. astr. Soc. 205, 131–152 (1983).

    Article  ADS  CAS  Google Scholar 

  22. Luppino, G. A. & Tonry, J. L. Astrophys. J. 410, 81–86 (1993).

    Article  ADS  Google Scholar 

  23. Van den Bergh, S. Astr. J. 107, 1328–1331 (1994).

    Article  ADS  Google Scholar 

  24. Spinrad, H. et al. Astrophys. J. 163, L25–L31 (1971).

    Article  ADS  Google Scholar 

  25. McCall, M. L. Astr. J. 97, 1341–1349 (1993).

    Article  ADS  Google Scholar 

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Kraan-Korteweg, R., Loan, A., Burton, W. et al. Discovery of a nearby spiral galaxy behind the Milky Way. Nature 372, 77–79 (1994).

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