Atomic Gas in Fornax A |
 | Minimum credit line: Image courtesy of NRAO/AUI
(for details, see .
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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 This image is available in the following downloadable versions: If you would like to obtain a higher resolution version of this image,
please contact .
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Telescope
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VLA
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Date of Observation
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1985-10-19
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Type of Observation
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Spectral Line Observations
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Wavelength
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21 cm
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Frequency
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1420.4 MHz
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Species
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HI
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Center of Image
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RA: 03:22:10.30, Dec: -37:12:12.00 (J2000)
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Field of View
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0.5500 x 0.4500 degrees
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Technical Caption
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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.
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