H I absorption in the gigamaser galaxy TXS 2226-184 and the relation between H I absorption and water emission

G. B. Taylor; A. B. Peck; C. Henkel; H. Falcke; C. G. Mundell; C. P. O'Dea; S. A. Baum; J. F. Gallimore

doi:10.1086/340836

H I absorption in the gigamaser galaxy TXS 2226-184 and the relation between H I absorption and water emission

G. B. Taylor, A. B. Peck, C. Henkel, H. Falcke, C. G. Mundell, C. P. O'Dea, S. A. Baum, J. F. Gallimore

Department of Physics

Research output: Contribution to journal › Article › peer-review

15 Citations (SciVal)

Abstract

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.

Original language	English
Pages (from-to)	88-94
Number of pages	7
Journal	Astrophysical Journal
Volume	574
Issue number	1
DOIs	https://doi.org/10.1086/340836
Publication status	Published - 20 Jul 2002

Keywords

Galaxies: active
Galaxies: individual (TXS 2226-184)
Galaxies: nuclei
Masers
Radio lines: galaxies

ASJC Scopus subject areas

Space and Planetary Science
Nuclear and High Energy Physics

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10.1086/340836

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title = "H I absorption in the gigamaser galaxy TXS 2226-184 and the relation between H I absorption and water emission",

abstract = "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.",

keywords = "Galaxies: active, Galaxies: individual (TXS 2226-184), Galaxies: nuclei, Masers, Radio lines: galaxies",

author = "Taylor, {G. B.} and Peck, {A. B.} and C. Henkel and H. Falcke and Mundell, {C. G.} and O'Dea, {C. P.} and Baum, {S. A.} and Gallimore, {J. F.}",

year = "2002",

month = jul,

day = "20",

doi = "10.1086/340836",

language = "English",

volume = "574",

pages = "88--94",

journal = "Astrophysical Journal",

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TY - JOUR

T1 - H I absorption in the gigamaser galaxy TXS 2226-184 and the relation between H I absorption and water emission

AU - Taylor, G. B.

AU - Peck, A. B.

AU - Henkel, C.

AU - Falcke, H.

AU - Mundell, C. G.

AU - O'Dea, C. P.

AU - Baum, S. A.

AU - Gallimore, J. F.

PY - 2002/7/20

Y1 - 2002/7/20

N2 - 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.

AB - 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.

KW - Galaxies: active

KW - Galaxies: individual (TXS 2226-184)

KW - Galaxies: nuclei

KW - Masers

KW - Radio lines: galaxies

UR - http://www.scopus.com/inward/record.url?scp=0043241814&partnerID=8YFLogxK

U2 - 10.1086/340836

DO - 10.1086/340836

M3 - Article

AN - SCOPUS:0043241814

SN - 0004-637X

VL - 574

SP - 88

EP - 94

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

H I absorption in the gigamaser galaxy TXS 2226-184 and the relation between H I absorption and water emission

Abstract

Keywords

ASJC Scopus subject areas

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