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The Edges of Things

Published online by Cambridge University Press:  17 September 2012

A. Portas ,
E. Brinks ,
A. Usero ,
F. Walter ,
W.J.G. de Blok  and
R.C. Kennicutt Jr.
A. Portas
Affiliation:
Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB, UK
E. Brinks
Affiliation:
Centre for Astrophysics Research, University of Hertfordshire, Hatfield AL10 9AB, UK
A. Usero
Affiliation:
Observatorio Astronómico Nacional, C/Alfonso XII 3, 28014 Madrid, Spain
F. Walter
Affiliation:
Max–Plank–Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
W.J.G. de Blok
Affiliation:
Univ. of Cape Town, Dept. of Astronomy, Private Bag X3, Rondebosch 7701, South Africa
R.C. Kennicutt Jr.
Affiliation:
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
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Abstract

We investigate the radial column density distribution in a sample of 9 galaxies taken from the THINGS survey. The HI data have been used to probe the extent of the neutral (atomic) gas disks down to column densities of less than 0.1 ℳ⊙ pc−2. The size of the disks might be set simply by the amount of available gas that has contributed to the formation of the galaxy or truncated by ionisation by the extragalactic radiation field once the HI column density has dropped below a certain threshold.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 56: The Role of the Disk-Halo Interaction in Galaxy Evolution: Outflow vs. Infall? , 2012 , pp. 129 - 132
Copyright
© EAS, EDP Sciences, 2012

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References

Begeman, K.G., 1989, A&A, 223, 47
Broeils, A.H., & Rhee, M.-H., 1997, ApJ, 324, 877
Bland–Hawthorn, J., & Maloney, P., 1999, ApJ, 510, 33CrossRef
Corbelli, E., Schneider, S.E., & Salpeter, E.E., 1989, AJ, 97, 390CrossRef
Dove, J.M., & Shull, M., 1994a, ApJ, 423, 196CrossRef
Dove, J.M., & Shull, M., 1994b, ApJ, 430, 222CrossRef
Linder, S.M., et al., 2003, MNRAS, 414, 41
Maloney, P., 1993, ApJ, 342, 1093
Sérsic, J.–L., 1968, Atlas de Galaxias Australes (Cordoba: Obs. Astron.)
Walter, F., et al., 2008, AJ, 136, 2563CrossRef