Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-25T10:47:44.919Z Has data issue: false hasContentIssue false
  • English
  • Français

Isolated dwarf galaxies in the Local Group

Published online by Cambridge University Press:  30 October 2019

Clare R. Higgs Open the ORCID record for Clare R. Higgs [Opens in a new window] ,
Alan W. McConnachie  and
the Solo Collaboration
Clare R. Higgs
Affiliation:
University of Victoria, Victoria, B.C., Canada, email: [email protected]
Alan W. McConnachie
Affiliation:
NRC Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, B.C., Canada
the <span class='italic'>Solo</span> Collaboration
Affiliation:
University of Victoria, Victoria, B.C., Canada, email: [email protected] NRC Herzberg Institute of Astrophysics, 5071 West Saanich Road, Victoria, B.C., Canada
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 Solo (Solitary local) Dwarf Galaxy Survey is a volume limited sample of all nearby (< 3 Mpc) and isolated (> 300 kpc from the Milky Way or M31) dwarfs, with wide-field g and i imaging. This survey uses resolved stellar populations to parameterize these low mass systems. Comparison to the well studied satellite dwarfs characterizes the evolutionary impact of a large galaxy in close proximity. The deep, wide field nature of this survey also lends itself to searching for nearby substructures, both globular clusters and possible faint satellites.

Current work is focused on the 16 closest Solo dwarfs, all within the virial radius (approximately 1 Mpc) of the Local Group. This subset has been characterized using consistent methods, despite their diversity in stellar mass and apparent size. The analysis highlights the extended stellar structure and morphology. We will examine trends with star formation history, and separation from a large host. This first subset emphasizes the survey’s unique challenges and advantages.

The Solo Survey provides detailed look at the extended structure of dwarfs and characterizes the evolution of galaxies in the faint limit.

Keywords

galaxies: dwarfgalaxies: fundamental parametersLocal Groupgalaxies: structuregalaxies: stellar content
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. 81 - 85
Copyright
© International Astronomical Union 2019 

References

Bellazzini, M., Beccari, G., Oosterloo, T. A., Galleti, S., Sollima, A., Correnti, M., Testa, V., Mayer, L., Cignoni, M., Fraternali, F. & Gallozzi, S. 2011, A&A, 527, A58 Google Scholar
Fattahi, A., Navarro, J. F., Frenk, C. S., Oman, K. A., Sawala, T. & Schaller, M. 2018, MNRAS, 476, 3816 10.1093/mnras/sty408CrossRefGoogle Scholar
Geha, M.,Wechsler, R. H. Mao, Y., Tollerud, E. J., Weiner, B., Bernstein, R.,Hoyle, B., Marchi, S., Marshall, P. J., Muñoz, R. & Lu, Y. 2017, ApJ, 847, 4 10.3847/1538-4357/aa8626CrossRefGoogle Scholar
Higgs, C. R., McConnachie, A. W., Irwin, M., Bate, N. F., Lewis, G. F., Walker, M. G. & Côté, 2016, MNRAS, 458, 1678 10.1093/mnras/stw257CrossRefGoogle Scholar
McConnachie, A. W. 2012, AJ, 144, 4 10.1088/0004-6256/144/1/4CrossRefGoogle Scholar
Smercina, A., Bell, E. F., Price, P. A., D’Souza, R., Slater, C. T., Bailin, J. Monachesi, A. & Nidever, D. 2018, ApJ, 863, 152 10.3847/1538-4357/aad2d6CrossRefGoogle Scholar
Spekkens, K., Urbancic, N., Mason, B. S., Willman, B. & Aguirre, J. E. 2014, ApJ, 795, L5 10.1088/2041-8205/795/1/L5CrossRefGoogle Scholar