The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
CONSTRAINTS ON MACHO DARK MATTER FROM COMPACT STELLAR SYSTEMS IN ULTRA-FAINT DWARF GALAXIES
Open accessAbstract
I show that a recently discovered star cluster near the center of the ultra-faint dwarf galaxy Eridanus II provides strong constraints on massive compact halo objects (MACHOs) of ≳5 M ⊙ as the main component of dark matter. MACHO dark matter will dynamically heat the cluster, driving it to larger sizes and higher velocity dispersions until it dissolves into its host galaxy. The stars in compact ultra-faint dwarf galaxies themselves will be subject to the same dynamical heating; the survival of at least 10 such galaxies places independent limits on MACHO dark matter of masses ≳10 M ⊙. Both Eri II’s cluster and the compact ultra-faint dwarfs are characterized by stellar masses of just a few thousand M ⊙ and half-light radii of 13 pc (for the cluster) and ∼30 pc (for the ultra-faint dwarfs). These systems close the ∼20–100 M ⊙ window of allowed MACHO dark matter and combine with existing constraints from microlensing, wide binaries, and disk kinematics to rule out dark matter composed entirely of MACHOs from ∼10−7 M ⊙ up to arbitrarily high masses.
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Cites
A Catalog of Parameters for Globular Clusters in the Milky Way
Harris, W. E. (1996) · The Astronomical Journal · doi:10.1086/118116 · Cited by 4,500 · cited 1×
“The first is the time for it to puff up to its observed size from the ∼2 pc core radius of a typical Galactic star cluster (Kharchenko et al. 2005; Harris 1996, 2010 edition).”
BackgroundMaraston, C. (2005) · Monthly Notices of the Royal Astronomical Society · doi:10.1111/j.1365-2966.2005.09270.x · Cited by 1,907 · cited 1×
“At an age of 3 Gyr, the V - band mass-to-light ratio for a metal-poor stellar system is ∼1M⊙/L⊙, while this ratio is ∼3M⊙/L⊙ for an old system (Maraston 2005).”
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Cited by
Arvanitaki, A., Dimopoulos, S., Galanis, M., Lehner, L., Thompson, J. O., & Van Tilburg, K. (2020) · Physical Review D · doi:10.1103/physrevd.101.083014 · Cited by 175
Dynamics of Dwarf Galaxies Disfavor Stellar-Mass Black Holes as Dark Matter
Koushiappas, S. M., & Loeb, A. (2017) · Physical Review Letters · doi:10.1103/physrevlett.119.041102 · Cited by 162
The DECam Local Volume Exploration Survey: Overview and First Data Release
Drlica-Wagner, A., Carlin, J. L., Nidever, D. L., Ferguson, P. S., Kuropatkin, N., Adamów, M., Cerny, W., Choi, Y., Esteves, J. H., Martínez-Vázquez, C. E., et al. (2021) · The Astrophysical Journal Supplement Series · doi:10.3847/1538-4365/ac079d · Cited by 120
“…2017; Tollerud & Peek 2018; Graus et al. 2019; Katz et al. 2020), and the nature of dark matter (e.g., Bergström et al. 1998; Spekkens et al. 2013; Malyshev et al. 2014; Ackermann et al. 2015; Geringer-Sameth et al. 2015; Brandt 2016; Bullock & Boylan-Kolchin 2017; Nadler et al. 2019, 2021).”
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Metadata
- Authors
- Brandt, T. D.
- Venue
- The Astrophysical Journal Letters
- Publisher
- American Astronomical Society
- Published
- 2016-06-20
- Volume
- 824
- Issue
- 2
- Pages
- L31
- ISSN
- 2041-8205 (ISSN-L)
- 2041-8213
- OpenAlex
- W2427182969
- Cited by
- 337
- References
- 2
- FWCI
- 20.30
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Brandt, T. D. (2016). CONSTRAINTS ON MACHO DARK MATTER FROM COMPACT STELLAR SYSTEMS IN ULTRA-FAINT DWARF GALAXIES. The Astrophysical Journal Letters. https://doi.org/10.3847/2041-8205/824/2/l31
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