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CO (2–1) observations of Maffei 2

  • Anneila I. Sargent (a1), E. C. Sutton (a1), C. R. Masson (a1), T. G. Phillips (a1) and K.-Y. Lo (a1)...

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Maffei 2 is a highly obscured galaxy, probably of type Sbc, at a distance of 5 Mpc (Allen and Raimond 1972; Spinrad et al. 1973). Since it lies close to the Galactic plane, there is considerable confusion in infrared and 21-cm HI observations due to Galactic emission, but investigations of its structure can be carried out at millimeter wavelengths where the Galaxy contribution is confined to a limited velocity range. The high resolution (30″) of our CO J=2–1 observations permits both a detailed examination of Maffei 2 and a study of the nature of the gas in its nucleus, through comparison with the CO J=1–0 observations.

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References

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Allen, R.J., and Raimond, E.: 1972, Astron. Astrophys. 19, 317
Bottinelli, L., et al.: 1972, Astron. Astrophys. 12, 264
Masson, C.R.: 1982, Astron. Astrophys. 114, 270
Rickard, L.J., Turner, B.E., and Palmer, P.: 1977, Astrophys. J. (Letters), 218, L51
Sargent, W.L.W., Young, P.J., Boksenberg, A., Shortridge, K., Lynds, C.R., and Hartwick, F.D.A.: 1978, Astrophys. J. 221, 731
Spinrad, H. et al.: 1971, Astrophys. J. (Letters), 163, L25
Spinrad, H. et al.: 1973, Astrophys. J. 180, 351
Sutton, E.C.: 1983, IEEE Trans. on MTT, in press
Sutton, E.C., Masson, C.R., and Phillips, T.G.: 1983, Astrophys. J., submitted
Ulich, B.M., and Haas, R.W.: 1976, Astrophys. J. (Supp.), 30, 247

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