The DOI matches its Crossref record; 44 of the 44 references it cites were found in a registry or an index.
Can Photoionization Squelching Resolve the Substructure Crisis?
Open accessAbstract
Cold dark matter theory predicts that the Local Group should contain many more dwarf-sized objects than the observed number of dwarf galaxies—the so-called substructure problem. We investigate whether the suppression of star formation in these small objects due to the presence of a photoionizing background can resolve the problem. We make use of results from recent hydrodynamic simulations to build a recipe for the suppression of gas infall into semianalytic galaxy formation models and use these to predict the luminosity function of dwarf galaxies in the Local Group. In the models without photoionization "squelching," we predict a large excess of faint dwarf galaxies compared with the observed number in the Local Group—thus, the usual recipe for supernova feedback used in semianalytic models does not solve the substructure problem on its own. When we include photoionization squelching, we find good agreement with the observations. We have neglected tidal destruction, which probably further reduces the number of dwarf galaxies. We conclude that photoionizing squelching easily solves the substructure problem. In fact, it is likely that once this effect is taken into account, models with reduced small-scale power (e.g., warm dark matter) would underproduce dwarf galaxies.
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Cites
Formation of Galaxies and Clusters of Galaxies by Self-Similar Gravitational Condensation
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Dark Matter Substructure within Galactic Halos
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Where Are the Missing Galactic Satellites?
Klypin, A., Kravtsov, A. V., Valenzuela, O., & Prada, F. (1999) · The Astrophysical Journal · doi:10.1086/307643 · Cited by 2,741
DWARF GALAXIES OF THE LOCAL GROUP
Mateo, M. (1998) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.36.1.435 · Cited by 2,362
Profiles of dark haloes: evolution, scatter and environment
Bullock, J. S., Kolatt, T. S., Sigad, Y., Somerville, R. S., Kravtsov, A. V., Klypin, A. A., Primack, J. R., & Dekel, A. (2001) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2001.04068.x · Cited by 2,319
Self-citationObservational Evidence for Self-Interacting Cold Dark Matter
Spergel, D. N., & Steinhardt, P. J. (2000) · Physical Review Letters · doi:10.1103/physrevlett.84.3760 · Cited by 2,097
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Halo Formation in Warm Dark Matter Models
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Semi-analytic modelling of galaxy formation: the local Universe
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Self-citationSuppressing the formation of dwarf galaxies via photoionization
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Cited by
Galactic stellar haloes in the CDM model
Cooper, A. P., Cole, S., Frenk, C. S., White, S. D. M., Helly, J., Benson, A. J., De Lucia, G., Helmi, A., Jenkins, A., Navarro, J. F., et al. (2010) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2010.16740.x · Cited by 594
Cold dark matter: Controversies on small scales
Weinberg, D. H., Bullock, J. S., Governato, F., Kuzio de Naray, R., & Peter, A. H. G. (2015) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1308716112 · Cited by 491
Dark matter and cosmic structure
Frenk, C. S., & White, S. D. M. (2012) · Annalen der Physik · doi:10.1002/andp.201200212 · Cited by 409
The Structural Evolution of Substructure
Hayashi, E., Navarro, J. F., Taylor, J. E., Stadel, J., & Quinn, T. (2003) · The Astrophysical Journal · doi:10.1086/345788 · Cited by 406
The Tidal Evolution of Local Group Dwarf Spheroidals
Penarrubia, J., Navarro, J. F., & McConnachie, A. W. (2008) · The Astrophysical Journal · doi:10.1086/523686 · Cited by 406
Metadata
- Authors
- Somerville, R. S.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 2002-06-10
- Volume
- 572
- Issue
- 1
- Pages
- L23-L26
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2052002005
- Cited by
- 441
- References
- 44
- FWCI
- 18.83
- Type
- journal article
- Language
- en
- Open access
- bronze
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