Abstract
KEEN interest has been aroused by the newly discovered objects1 Maffei 1 and 2, which are believed to be nearby galaxies. There is no detectable radio emission2 from Maffei 1, which is probably an E3 or E4 galaxy, but Maffei 2 (at l = 136°, b = 0°) has been studied both in the radio continuum3–7 and the 21 cm hydrogen line6,7 with the conclusions that (a) it is an Sa or Sb galaxy with a maximum rotation velocity of about 200 km s−1, on the assumption that the angle between the rotation axis and the line of sight is 70°; (b) the radial velocity with respect to the Sun is6 (25 ± 10) km s−1 or7 −28 km s−1; (c) the “effective diameter”, within which there is half the total hydrogen, is6 10′.2; (d) the half-power dimensions of the continuum source are7 5′ × 3′, although Bell et al.3 find an upper limit of 2′ for the angular size at 3,240 MHz.
This is a preview of subscription content, access via your institution
Access options
References
Maffei, P., Pub. Astron. Soc. Pacific, 80, 618 (1968).
Oort, J. H., Nature, 230, 103 (1971).
Bell, M. B., Seaquist, E. R., and Braun, L. D., Astrophys. J. Lett., 161, L13 (1971).
Caswell, J. L., Nature, 231, 35 (1971).
Webber, J. C., and Willis, A. G., Nature, 231, 36 (1971).
Bottinelli, L., Chamaraux, P., Gérard, E., Gouguenheim, L., Heidmann, J., Kazès, I., and Laqué, R., Astron. Astrophys., 13, 497 (1971).
Shostak, G. S., and Weliachew, L., Astrophys. J., 169, L71 (1971).
Baldwin, J. E., Field, C., Warner, P. J., and Wright, M. C. H., Mon. Not. Roy. Astron. Soc., 154, 445 (1971).
Neville, A. C., Windram, M. D., and Kenderdine, S., The Observatory, 89, 186 (1969).
Roberts, M. S., and Warren, J. L., Astron. Astrophys., 6, 165 (1970).
Rogstad, D. H., Rougoor, G. W., and Whiteoak, J. B., Astrophys. J., 150, 9 (1967).
Wright, M. C. H., thesis, University of Cambridge, 1970.
Beale, J. S., and Davies, R. D., Nature, 221, 531 (1969).
van den Bergh, S., Nature, 231, 35 (1971).
Holmberg, E. B., Medd. Lunds. Obs. II, No. 136 (1958).
Bottinelli, L., Astron. Astrophys., 10, 437 (1971).
Heidmann, J., Heidmann, N., and de Vaucouleurs, G., McDonald Observatory Preprint, No. 10 (1970).
Bottinelli, L., Chamaraux, P., Gouguenheim, L., and Laqué, R., Astron. Astrophys., 6, 453 (1970).
Heidmann, N., Astrophys. Lett., 3, 153 (1969).
Gouguenheim, L., Astron. Astrophys., 3, 281 (1969).
Brandt, J. C., Astrophys. J., 131, 293 (1960).
Burbidge, E. M., and Burbidge, G. R., Stars and Stellar Systems, 9 (in the press).
Spinrad, H., Sargent, W. L. W., Oke, J. B., Neugebauer, G., Landau, R., King, I. R., Gunn, J. E., Garmire, G., and Deiter, N. H., Astrophys. J., 163, L25 (1971).
de Vaucouleurs, G., Stars and Stellar Systems, 9 (in the press).
Brosche, P., Astron. Astrophys., 13, 293 (1971).
Holmberg, E. G., Ark. Astr., 3, 387 (1964).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
LOVE, R. Radio Maps of Maffei 2. Nature Physical Science 235, 53–56 (1972). https://doi.org/10.1038/physci235053a0
Received:
Issue date:
DOI: https://doi.org/10.1038/physci235053a0
