Hostname: page-component-cd9895bd7-7cvxr Total loading time: 0 Render date: 2024-12-25T17:43:28.367Z Has data issue: false hasContentIssue false
  • English
  • Français

The Wsrt Halogas Survey

Published online by Cambridge University Press:  09 February 2015

George Heald  and
the HALOGAS Team
George Heald
Affiliation:
ASTRON, Postbus 2, 7990 AA Dwingeloo, The Netherlands Kapteyn Astronomical Institute, Postbus 800, 9700 AV, Groningen, The Netherlands email: heald@astron.nl
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We present an overview of the HALOGAS (Hydrogen Accretion in LOcal GAlaxieS) Survey, which is the deepest systematic investigation of cold gas accretion in nearby spiral galaxies to date. Using the deep H i data that form the core of the survey, we are able to detect neutral hydrogen down to a typical column density limit of about 1019 cm−2 and thereby characterize the low surface brightness extra-planar and anomalous-velocity neutral gas in nearby galaxies with excellent spatial and velocity resolution. Through comparison with sophisticated kinematic modeling, our 3D HALOGAS data also allow us to investigate the disk structure and dynamics in unprecedented detail for a sample of this size. Key scientific results from HALOGAS include new insight into the connection between the star formation properties of galaxies and their extended gaseous media, while the developing HALOGAS catalogue of cold gas clouds and streams provides important insight into the accretion history of nearby spirals. We conclude by motivating some of the unresolved questions to be addressed using forthcoming 3D surveys with the modern generation of radio telescopes.

Keywords

galaxies: spiral — galaxies: evolution — galaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S309: Galaxies in 3D across the Universe , July 2014 , pp. 69 - 72
Copyright
Copyright © International Astronomical Union 2015 

References

de Blok, W. J. G., Józsa, G. I. G., Patterson, M., et al. 2014, A&A, 566, A80Google Scholar
de Blok, W. J. G., et al. 2015, in “Advancing Astrophysics with the Square Kilometre Array”Google Scholar
Collins, J. A., Shull, J. M., & Giroux, M. L. 2007, ApJ, 657, 271CrossRefGoogle Scholar
Dahlem, M., Lisenfeld, U., & Rossa, J. 2006, A&A, 457, 121Google Scholar
Fox, A. J., Wakker, B. P., Barger, K. A., et al. 2014, ApJ, 787, 147Google Scholar
Fraternali, F., van Moorsel, G., Sancisi, R., & Oosterloo, T. 2002, AJ, 123, 3124Google Scholar
García-Ruiz, I., Sancisi, R., & Kuijken, K. 2002, A&A, 394, 769Google Scholar
Gentile, G., Józsa, G. I. G., Serra, P., et al. 2013, A&A, 554, A125Google Scholar
Giovanelli, R., Haynes, M. P., Kent, B. R., et al. 2007, AJ, 133, 2569Google Scholar
Heald, G., Józsa, G., Serra, P., et al. 2011, A&A, 526, A118Google Scholar
Heald, G., Józsa, G., Serra, P., et al. 2012, A&A, 544, 1Google Scholar
Heald, G., et al. 2015, in prep.Google Scholar
Józsa, G. I. G., Kenn, F., Klein, U., & Oosterloo, T. A. 2007, A&A, 468, 731Google Scholar
Jütte, E., et al. 2015, in prep.Google Scholar
Kamphuis, P., Rand, R. J., Józsa, G. I. G., et al. 2013, MNRAS, 434, 2069Google Scholar
Kereš, D., Katz, N., Fardal, M., Davé, R., & Weinberg, D. H. 2009, MNRAS, 395, 160Google Scholar
Lehner, N. & Howk, J. C. 2011, Science, 334, 955Google Scholar
Marinacci, F., Binney, J., Fraternali, F., et al. 2010, MNRAS, 404, 1464Google Scholar
Oosterloo, T., Fraternali, F., & Sancisi, R. 2007, AJ, 134, 1019Google Scholar
Popping, A., et al. 2015, in “Advancing Astrophysics with the Square Kilometre Array”Google Scholar
Putman, M. E., Peek, J. E. G., & Joung, M. R. 2012, ARA&A, 50, 491Google Scholar
Sancisi, R., Fraternali, F., Oosterloo, T., & van der Hulst, T. 2008, A&A Rev., 15, 189Google Scholar
Thilker, D. A., Braun, R., Walterbos, R. A. M., et al. 2004, ApJ, 601, L39Google Scholar
Wakker, B. P., Howk, J. C., Savage, B. D., et al. 1999, Nature, 402, 388Google Scholar
Wakker, B. P. & van Woerden, H. 1997, ARA&A, 35, 217Google Scholar
Walter, F., Brinks, E., de Blok, W. J. G., et al. 2008, AJ, 136, 2563Google Scholar
Zschaechner, L. K., Rand, R. J., Heald, G. H., Gentile, G., & Kamphuis, P. 2011, ApJ, 740, 35Google Scholar
Zschaechner, L. K., Rand, R. J., Heald, G. H., Gentile, G., & Józsa, G. 2012, ApJ, 760, 37Google Scholar