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          Institute: MPI für Radioastronomie     Collection: Publikationen des MPI für Radioastronomie     Display Documents

ID: 12249.0, MPI für Radioastronomie / Publikationen des MPI für Radioastronomie
HI absorption in the gigamaser galaxy TXS 2226-184 and the relation between HI absorption and water emission
Authors:Taylor, G. B.; Peck, A. B.; Henkel, C.; Falcke, H.; Mundell, C. G.; O'Dea, C. P.; Baum, S. A.; Gallimore, J. F.
Date of Publication (YYYY-MM-DD):2002-07-20
Title of Journal:Astrophysical Journal
Journal Abbrev.:Astrophys. J.
Issue / Number:1
Start Page:88
End Page:94
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We report on the discovery of H I in absorption toward the gigamaser galaxy TXS 2226-184 using the Very Large Array. The absorption appears to consist of two components one with a width of 125 km s(-1) and one broader (420 km s(-1)) both toward the compact radio source in the nucleus of the galaxy. Based on these large velocity widths, we suggest that the H I absorption is produced in the central parsecs of the galaxy, on a scale similar to that which gives rise to the water maser emission. This brings to eight the number of galaxies known to exhibit both water masers and H I absorption. We explore the relationship between these two phenomena and present a physically motivated (but unfruitful) search for water maser emission in five radio galaxies known to exhibit strong H I absorption.
Free Keywords:galaxies : active; galaxies : individual (TXS 2226-184) galaxies : nuclei; masers; radio lines : galaxies
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Radioastronomie
External Affiliations:Natl Radio Astron Observ, POB O, Socorro, NM 87801 USA; Natl Radio Astron Observ, Socorro, NM 87801 USA; Max Planck Inst Radioastron, D-53121 Bonn, Germany; Liverpool John Moores Univ, Astrophys Res Inst, Birkenhead CH41 11D, Merseyside, England; Space Telescope Sci Inst, Baltimore, MD 21218 USA; Bucknell Univ, Dept Phys, Lewisburg, PA 17837 USA
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