Hostname: page-component-76fb5796d-skm99 Total loading time: 0 Render date: 2024-04-25T20:52:09.386Z Has data issue: false hasContentIssue false
  • English
  • Français

A whirling plane of satellite galaxies around Centaurus A challenges CDM cosmology

Published online by Cambridge University Press:  30 October 2019

Oliver Müller Open the ORCID record for Oliver Müller [Opens in a new window]
Oliver Müller*
Affiliation:
Departement Physik, Universität Basel, Klingelbergstr. 82, CH-4056 Basel, Switzerland email: oliver89.mueller@unibas.ch
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.

The phase-space correlation of dwarf galaxies around the Milky Way and the Andromeda galaxy pose a serious challenge to our understanding of structure formation. Recently, another planar structure was discovered around Cen A, the major galaxy of the Centaurus group. We have surveyed this galaxy group for new dwarf galaxies and presented the discovery of 57 new dwarf member candidates. Furthermore, we have studied the kinematics of previously known dwarfs and again found a kinematic coherence in their movement, similar to the Local Group satellites. In CDM simulations, such an alignment appears in less than 0.5 percent.

Keywords

galaxies: dwarfgalaxies: kinematics and dynamics(cosmology:) large-scale structure of universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S344: Dwarf Galaxies: From the Deep Universe to the Present , August 2018 , pp. 473 - 476
Copyright
© International Astronomical Union 2019 

References

Boylan-Kolchin, M., Bullock, J. S., & Kaplinghat, M. 2011, MNRAS, 415, L40 CrossRefGoogle Scholar
Carrillo, A., Bell, E. F., Bailin, J., et al . 2017, MNRAS, 465, 5026 CrossRefGoogle Scholar
Cautun, M., Bose, S., Frenk, C. S., et al . 2015, MNRAS, 452, 3838 CrossRefGoogle Scholar
Chiboucas, K., Karachentsev, I. D., & Tully, R. B. 2009, AJ, 137, 3009 CrossRefGoogle Scholar
Crnojevi, D., Sand, D. J., Spekkens, K., et al . 2016, APJ, 823, 19 CrossRefGoogle Scholar
de Blok, W. J. G. 2010, Advances in Astronomy, 2010, 789293 CrossRefGoogle Scholar
Fritz, T. K., Battaglia, G., Pawlowski, M. S., et al . 2018, arXiv:1805.00908Google Scholar
Collaboration, Gaia, Helmi, A., van Leeuwen, F., et al . 2018, arXiv:1804.09381Google Scholar
Ibata, R. A., Lewis, G. F., Conn, A. R., et al . 2013, Nature, 493, 62 CrossRefGoogle Scholar
Javanmardi, B., Martinez-Delgado, D., Kroupa, P., et al . 2016, A&A, 588, A89 Google Scholar
Kroupa, P., Theis, C., & Boily, C. M. 2005, A&A, 431, 517 Google Scholar
Merritt, A., van Dokkum, P., & Abraham, R. 2014, APJL, 787, L37 CrossRefGoogle Scholar
Moore, B., Ghigna, S., Governato, F., et al . 1999, APJL, 524, L19 CrossRefGoogle Scholar
Müller, O., Jerjen, H., & Binggeli, B. 2015, A&A, 583, A79 Google Scholar
Müller, O., Jerjen, H., Pawlowski, M. S., & Binggeli, B. 2016, A&A, 595, A119 Google Scholar
Müller, O., Jerjen, H., & Binggeli, B. 2017, A&A, 597, A7 Google Scholar
Müller, O., Scalera, R., Binggeli, B., & Jerjen, H. 2017, A&A, 602, A119 Google Scholar
Müller, O., Pawlowski, M. S., Jerjen, H., & Lelli, F. 2018, Science, 359, 534 CrossRefGoogle Scholar
Müller, O., Rejkuba, M., & Jerjen, H. 2018, A&A, 615, A96 Google ScholarPubMed
Müller, O., Jerjen, H., & Binggeli, B. 2018, A&A, 615, A105 Google ScholarPubMed
Pawlowski, M. S., Pflamm-Altenburg, J., & Kroupa, P. 2012, MNRAS, 423, 1109 CrossRefGoogle Scholar
Pawlowski, M. S., & Kroupa, P. 2013, MNRAS, 435, 2116 CrossRefGoogle Scholar
Pawlowski, M. S., Famaey, B., Jerjen, H., et al . 2014, MNRAS, 442, 2362 CrossRefGoogle Scholar
Pawlowski, M. S., Famaey, B., Merritt, D., & Kroupa, P. 2015, APJ, 815, 19 CrossRefGoogle Scholar
Pawlowski, M. S. 2018, Modern Physics Letters A, 33, 1830004 CrossRefGoogle Scholar
Simon, J. D., & Geha, M. 2007, APJ, 670, 313 CrossRefGoogle Scholar
Tully, R. B., Libeskind, N. I., Karachentsev, I. D., et al . 2015, APJL, 802, L25 CrossRefGoogle Scholar