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Title:
H I in the giant elliptical galaxy NGC 4406
Authors:
Bregman, Joel N.; Roberts, Morton S.
Affiliation:
AA(National Radio Astronomy Observatory, Charlottesville, VA; Michigan, University, Ann Arbor), AB(National Radio Astronomy Observatory, Charlottesville, VA)
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 362, Oct. 20, 1990, p. 468-472. (ApJ Homepage)
Publication Date:
10/1990
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Elliptical Galaxies, Galactic Rotation, H I Regions, Interstellar Matter, Radio Sources (Astronomy), Astronomical Spectroscopy, Emission Spectra, Interstellar Gas, X Ray Astronomy
DOI:
10.1086/169284
Bibliographic Code:
1990ApJ...362..468B

Abstract

The Arecibo 305-m radio telescope was used to make 21-cm measurements of NGC 4406, an elliptical galaxy containing 10 to the 10th solar mass of hot diffuse gas. The H I decreases by a factor of 3 one beamwidth from the center and by an order of magnitude two beam widths from the center. Excess H I emission is seen in the X-ray tail, but not in dust-rich regions. The H I measurements do not support the suggestion that the X-ray tail is hot gas being stripped from the galaxy.

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