Atomic Gas in Fornax A

Image
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About this Image

VLA atomic hydrogen of the central dominant galaxy of the Fornax Cluster, Fornax A (a.k.a. NGC 1316). The gas is shown as blue contours on an optical image from the Digital Sky Survey. The main body of the Fornax A is typical of early type galaxies, but at fainter light levels the galaxy exhibits a peculiar morphology, with many shells, ripples and loops. The VLA spectral line observations show gas associated with the galaxy NGC 1317 just to the north, the barred galaxy NGC 1310 to the west, and in several small clounds around the main body of NGC 1316. Its possible that the gas clouds are left over from a merger event which fueled the central radio source.

Investigator(s):  C. Horellou, J. Black, J. van Gorkom, F. Combes, J. van der Hulst & V. Charmandaris. Image by J. Hibbard

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Technical Data

    Telescope VLA 
    Date of Observation 1985-10-19 
    Type of Observation Spectral Line Observations 
    Wavelength 21 cm 
    Frequency 1420.4 MHz 
    Species HI 
    Center of Image RA: 03:22:10.30, Dec: -37:12:12.00 (J2000)  
    Field of View 0.5500 x 0.4500 degrees  
    Technical Caption Radio data are VLA DnC-array observations at 54"x43" resolution. HI contours start at a level of 2x1019 atoms cm-2, with successive contours a factor of two higher.  

  • Astronomical database entries for NGC1316
    • Query NED for images of NGC1316
    • Query SIMBAD for more NGC1316 data

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