Central Component of the Radio Source Centaurus A


THE identification of the radio source Centaurus A with the peculiar galaxy NGC 5128 was first suggested by Bolton, Stanley and Slee1. The radio source consists of an extended component with dimensions of about 2° × 4° and a compact central component. The extended source has recently been shown by Bolton and Clark2 to consist of two components. The compact central component was investigated in 1953 by Mills3. His observations indicated that the radio emission was associated with the wide dust band of NGC 5128. Recent measurements by Twiss, Carter and Little4 have shown that the central source also consists of two components. This result was also obtained by Moffet and Maltby5. In a more recent radio investigation of NGC 5128, reported in this communication, I find that the radio source is not associated with the wide dust band.

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  1. 1

    Bolton, J. G., Stanley, G. J., and Slee, O. B., Nature, 164, 101 (1949).

  2. 2

    Bolton, J. G., and Clark, B. G., Pub. Astron. Soc. Pac., 72, 29 (1960).

  3. 3

    Mills, B. Y., Austral. J. Phys., 6, 452 (1953).

  4. 4

    Twiss, R. Q., Carter, A. W. L., and Little, A. G., The Observatory, 80, 153 (1960).

  5. 5

    Moffet, A. T., and Maltby, P., Nature, 191, 453 (1961).

  6. 6

    Moffet, A. T. (in preparation).

  7. 7

    Baade, W., and Minkowski, R., Astrophys. J., 119, 215 (1954).

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MALTBY, P. Central Component of the Radio Source Centaurus A. Nature 191, 793–794 (1961). https://doi.org/10.1038/191793a0

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