HI in Local Group analogs: What does it tell us about galaxy formation?

D. J. Pisano; D. G. Barnes; B. K. Gibson; Lister Staveley-Smith; K. C. Freeman; V. A. Kilborn

doi:10.1007/978-3-540-71173-5_4

HI in Local Group analogs: What does it tell us about galaxy formation?

D. J. Pisano^*, D. G. Barnes, B. K. Gibson, Lister Staveley-Smith, K. C. Freeman, V. A. Kilborn

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present the results of our HI survey of six loose groups of galaxies analogous to the Local Group. The survey was conducted using the Parkes telescope and the Australia Telescope Compact Array to produce a census of all the gas-rich galaxies and potential analogs to the high-velocity clouds (HVCs) within these groups down to M_HI ≤ 10⁷ M⊙ as a test of models of galaxy formation. We present the HI mass function and halo mass function for these analogous groups and compare them with the Local Group and other environments. We also demonstrate that our non-detection of HVC analogs in these groups implies that they must have low HI masses and be clustered tightly around galaxies, including around our own Milky Way, and are not distributed throughout the Local Group.

Original language	English
Title of host publication	Groups of Galaxies in the Nearby Universe
Subtitle of host publication	Proceedings of the ESO Workshop held at Santiago de Chile, December 5-9, 2005
Editors	Ivo Saviane, Valentin Ivanov, Jordanka Borissova
Pages	33-38
Number of pages	6
DOIs	https://doi.org/10.1007/978-3-540-71173-5_4
Publication status	Published - 2007

Publication series

Name	ESO Astrophysics Symposia
Volume	2007
ISSN (Print)	1431-2433
ISSN (Electronic)	1611-6143

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10.1007/978-3-540-71173-5_4

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Pisano, D. J., Barnes, D. G., Gibson, B. K., Staveley-Smith, L., Freeman, K. C., & Kilborn, V. A. (2007). HI in Local Group analogs: What does it tell us about galaxy formation? In I. Saviane, V. Ivanov, & J. Borissova (Eds.), Groups of Galaxies in the Nearby Universe: Proceedings of the ESO Workshop held at Santiago de Chile, December 5-9, 2005 (pp. 33-38). (ESO Astrophysics Symposia; Vol. 2007). https://doi.org/10.1007/978-3-540-71173-5_4

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title = "HI in Local Group analogs: What does it tell us about galaxy formation?",

abstract = "We present the results of our HI survey of six loose groups of galaxies analogous to the Local Group. The survey was conducted using the Parkes telescope and the Australia Telescope Compact Array to produce a census of all the gas-rich galaxies and potential analogs to the high-velocity clouds (HVCs) within these groups down to MHI ≤ 107 M⊙ as a test of models of galaxy formation. We present the HI mass function and halo mass function for these analogous groups and compare them with the Local Group and other environments. We also demonstrate that our non-detection of HVC analogs in these groups implies that they must have low HI masses and be clustered tightly around galaxies, including around our own Milky Way, and are not distributed throughout the Local Group.",

author = "Pisano, {D. J.} and Barnes, {D. G.} and Gibson, {B. K.} and Lister Staveley-Smith and Freeman, {K. C.} and Kilborn, {V. A.}",

year = "2007",

doi = "10.1007/978-3-540-71173-5_4",

language = "English",

isbn = "3540711724",

series = "ESO Astrophysics Symposia",

pages = "33--38",

editor = "Ivo Saviane and Valentin Ivanov and Jordanka Borissova",

booktitle = "Groups of Galaxies in the Nearby Universe",

}

Pisano, DJ, Barnes, DG, Gibson, BK, Staveley-Smith, L, Freeman, KC & Kilborn, VA 2007, HI in Local Group analogs: What does it tell us about galaxy formation? in I Saviane, V Ivanov & J Borissova (eds), Groups of Galaxies in the Nearby Universe: Proceedings of the ESO Workshop held at Santiago de Chile, December 5-9, 2005. ESO Astrophysics Symposia, vol. 2007, pp. 33-38. https://doi.org/10.1007/978-3-540-71173-5_4

HI in Local Group analogs: What does it tell us about galaxy formation? / Pisano, D. J.; Barnes, D. G.; Gibson, B. K. et al.
Groups of Galaxies in the Nearby Universe: Proceedings of the ESO Workshop held at Santiago de Chile, December 5-9, 2005. ed. / Ivo Saviane; Valentin Ivanov; Jordanka Borissova. 2007. p. 33-38 (ESO Astrophysics Symposia; Vol. 2007).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - We present the results of our HI survey of six loose groups of galaxies analogous to the Local Group. The survey was conducted using the Parkes telescope and the Australia Telescope Compact Array to produce a census of all the gas-rich galaxies and potential analogs to the high-velocity clouds (HVCs) within these groups down to MHI ≤ 107 M⊙ as a test of models of galaxy formation. We present the HI mass function and halo mass function for these analogous groups and compare them with the Local Group and other environments. We also demonstrate that our non-detection of HVC analogs in these groups implies that they must have low HI masses and be clustered tightly around galaxies, including around our own Milky Way, and are not distributed throughout the Local Group.

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Pisano DJ, Barnes DG, Gibson BK, Staveley-Smith L, Freeman KC, Kilborn VA. HI in Local Group analogs: What does it tell us about galaxy formation? In Saviane I, Ivanov V, Borissova J, editors, Groups of Galaxies in the Nearby Universe: Proceedings of the ESO Workshop held at Santiago de Chile, December 5-9, 2005. 2007. p. 33-38. (ESO Astrophysics Symposia). doi: 10.1007/978-3-540-71173-5_4

HI in Local Group analogs: What does it tell us about galaxy formation?

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