Neutral Hydrogen Absorption in Nearby Active Galaxies

A. Pedlar, K. A. Wills, G. H. J. Cole, T. W. B. Muxlow, Carole Mundell, Jack F. Gallimore

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


We report on neutral hydrogen absorption measurements using MERLIN. Results on a number of Seyfert and starburst galaxies are summarised. The existence of neutral gas close to the active nucleus is established in some Seyfert nuclei although it is unclear whether this gas is associated with the dusty torus responsible for hiding the BLR and collimating the UV. Some of the absorption appears to be associated with larger galactic structures such as molecular rings. HI absorption has been measured against individual SNR in the starbursts M82 and NGC3628 which can be used both to model the starburst and to investigate the ISM in these galaxies on parsec scales.
Original languageEnglish
Title of host publicationHighly Redshifted Radio Lines
Subtitle of host publicationProceedings of a Conference Held in Green Bank WV USA October 9-1, 1997
PublisherAstronomical Society of the Pacific
ISBN (Print)9781886733763
Publication statusPublished - Jan 1999

Publication series

NameASP Conference series


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