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Detection of a Broad HI Absorption Feature at 5300 km SEC−1 Associated with NGC 1275 (3C84)

  • P. C. Crane
  • J. M. van der Hulst
  • A. D. Haschick
Part of the International Astronomical Union / Union Astronomique Internationale book series (IAUS, volume 97)

Abstract

Observations of NGC 1275 at ~ 1396 MHz with the NRAO line interferometer in 1974 and 1976 suggest the presence of a very broad, shallow HI absorption feature centered at ~ 5300 km sec−1. These observations were repeated in 1981 June with the Very Large Array using a greater bandwidth to determine a satisfactory baseline.

Keywords

Absorption Feature Radio Source Column Density Extragalactic Radio Source Radio Astronomy Observatory 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Cowie, L. L., Fabian, A. C., and Nulsen, P. E. J.: 1980, M.N.R.A.S. 191, 399.ADSGoogle Scholar
  2. Heckman, T. M., Miley, G. K., van Breugel, W. J. M., and Butcher, H. R.: 1981, Ap. J. 247, 403.ADSCrossRefGoogle Scholar
  3. Rubin, V. C., Ford, W. K., Jr., Peterson, C. J., and Lynds, C. R.: 1978, Ap. J. Sappl. 37, 235.ADSCrossRefGoogle Scholar

Copyright information

© IAU 1982

Authors and Affiliations

  • P. C. Crane
    • 1
  • J. M. van der Hulst
    • 2
  • A. D. Haschick
    • 3
  1. 1.National Radio Astronomy ObservatoryUSA
  2. 2.Department of AstronomyUniversity of MinnesotaUSA
  3. 3.Haystack ObservatoryUSA

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