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Cited by 147Galaxies: Formation, Evolution, PhenomenaStellar, planetary, and galactic studiesCosmology and Gravitation Theories

DARK MATTER HALOS IN GALAXIES AND GLOBULAR CLUSTER POPULATIONS

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Hudson, Michael J., Harris, Gretchen L., Harris, William E.·2014·The Astrophysical Journal
DOI 10.1088/2041-8205/787/1/l5
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Abstract

We combine a new, comprehensive database for globular cluster populations in all types of galaxies with a new calibration of galaxy halo masses based entirely on weak lensing. Correlating these two sets of data, we find that the mass ratio η ≡ M GCS / M h (total mass in globular clusters, divided by halo mass) is essentially constant at 〈η〉 ∼ 4 × 10 −5 , strongly confirming earlier suggestions in the literature. Globular clusters are the only known stellar population that formed in essentially direct proportion to host galaxy halo mass. The intrinsic scatter in η appears to be at most 0.2 dex; we argue that some of this scatter is due to differing degrees of tidal stripping of the globular cluster systems between central and satellite galaxies. We suggest that this correlation can be understood if most globular clusters form at very early stages in galaxy evolution, largely avoiding the feedback processes that inhibited the bulk of field-star formation in their host galaxies. The actual mean value of η also suggests that about one-fourth of the initial gas mass present in protogalaxies collected into giant molecular clouds large enough to form massive, dense star clusters. Finally, our calibration of 〈η〉 indicates that the halo masses of the Milky Way and M31 are (1.2 ± 0.5) × 10 12 M ☉ and (3.9 ± 1.8) × 10 12 M ☉ , respectively.

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Research works printed but not linked: 5

  1. Gonzalez, R. E., Kravtsov, A. V., & Gnedin, N. Y. 2013, arXiv:1312.2587 · arXiv
  2. Hudson, M. J., Gillis, B. R., Coupon, J., et al. 2013, arXiv:1310.6784 · arXiv
  3. Kravtsov, A., Vikhlinin, A., & Meshscheryakov, A. 2014, arXiv:1401.7329 · arXiv
  4. Planck Collaboration, Ade, P. A. R., Aghanim, N., et al. 2013, arXiv:1303.5076 · arXiv
  5. Silk, J., & Mamon, G. A. 2012, RAA, 12, 917 · DOI · Paper page

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Authors
Hudson, M. J., Harris, G. L., & Harris, W. E.
Affiliations
  • University of Waterloo (CA)
  • McMaster University (CA)
Corresponding author
Hudson, Michael J.
ORCID
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2014-04-30
Volume
787
Issue
1
Pages
L5
ISSN
  • 2041-8205 (ISSN-L)
  • 2041-8213
DOI
10.1088/2041-8205/787/1/l5
OpenAlex
W1974360894
Cited by
147
References
45
Citations by year
2026: 6 · 2025: 10 · 2024: 12 · 2023: 17 · 2022: 17 · 2021: 10 · 2020: 15 · 2019: 12 · 2018: 17 · 2017: 8 · 2016: 11 · 2015: 8 · 2014: 4
FWCI
5.57
Type
journal article
Language
en
Open access
Licence
Locations
  • The Astrophysical Journal Letters (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • arXiv (Cornell University)
Funders
Natural Sciences and Engineering Research Council of Canada
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
Keywords
globular cluster populations, weak gravitational lensing, tidal stripping, satellite galaxies, giant molecular clouds, early galaxy formation

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