Neutral hydrogen absorption in MRK 6, NGC 3810, 1506+34, and NGC 1068

Details Neutral hydrogen absorption in MRK 6, NGC 3810, 1506+34, and NGC 1068 Neutral hydrogen absorption in MRK 6, NGC 3810, 1506+34, and NGC 1068

Aug 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983aj.....88.1088b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 88, Aug. 1983, p. 1088-1093.

Astronomy and Astrophysics

Astronomy

18

Absorption Spectra, Astronomical Spectroscopy, Hydrogen, Neutral Gases, Radio Galaxies, High Resolution, Spectral Resolution

Scientific paper

H I absorption has been reported in NGC 1068 and NGC 3810. The absorbing material in NGC 1068 has a low column density and is positioned in front of the compact nuclear source. Absorption in NGC 3810 occurs across a large fraction of the extended (4 arcmin) radio source. Velocity offsets in NGC 3810 are due to disk rotation of the absorbing gas. Interpreting the features in these galaxies in terms of H I holes is considered implausible. H I absorption spectra are presented for Mrk 6 and a high resolution spectrum is given for 1506+34, suggesting the presence of distinct components in the 1506+34 absorption feature.

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