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Cortese, L. R. Levenson, L. Spinoglio, L. Vigroux, M. Baes, M. Bradford, M. Galametz, M. Griffin, M. J. Barlow, M. J. Page, M. Pohlen, M. R. P. Schirm, M. Sauvage, M. Symeonidis, M. Trichas, M. Vaccari, M. W. L. Smith, N. Castro-Rodr\\'iguez, N. Lu, N. Rangwala, N. Sacchi, P. Chanial, P. Panuzzo, R. Auld, S. A. Eales, S. Charlot, S. Hony, S. Madden, S. Oliver, S. Srinivasan, T. Fulton, T. J. Parkin, V. Buat, W. K. Gear, W. W. Zeilinger","submitted_at":"2010-05-11T16:08:09Z","abstract_excerpt":"We present the observations of the starburst galaxy M82 taken with the Herschel SPIRE Fourier Transform Spectrometer. The spectrum (194-671 {\\mu}m) shows a prominent CO rotational ladder from J = 4-3 to 13-12 emitted by the central region of M82. The fundamental properties of the gas are well constrained by the high J lines observed for the first time. 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