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)


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.


Absorption Feature Radio Source Column Density Extragalactic Radio Source Radio Astronomy Observatory 
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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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