Mass Models of the Milky Way and Estimation of Its Mass from the Gaia DR3 Data Set Article Swipe
Francesco Sylos Labini
,
Ž. Chrobáková
,
R. Capuzzo‐Dolcetta
,
M. López‐Corredoira
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3847/1538-4357/acb92c
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.3847/1538-4357/acb92c
We use data from the Gaia DR3 data set to estimate the mass of the Milky Way (MW) by analyzing the rotation curve in the range of distances 5 to 28 kpc. We consider three mass models: The first model adds a spherical dark matter (DM) halo, following the Navarro–Frenk–White (NFW) profile, to the known stellar components. The second model assumes that DM is confined to the Galactic disk, following the idea that the observed density of gas in the Galaxy is related to the presence of a more massive DM disk (DMD), similar to the observed correlation between DM and gas in other galaxies. The third model only uses the known stellar-mass components and is based on the Modified Newton Dynamics (MOND) theory. Our results indicate that the DMD model is comparable in accuracy to the NFW and MOND models and fits the data better at large radii where the rotation curve declines but has the largest errors. For the NFW model, we obtain a virial mass M vir = (6.5 ± 0.3) × 10 11 M ⊙ with concentration parameter c = 14.5, which is lower than what is typically reported. In the DMD case, we find that the MW mass is M d = (1.6 ± 0.5) × 10 11 M ⊙ with a disk’s characteristic radius of R d = 17 kpc.
Related Topics
Concepts
Physics
Galaxy rotation curve
Virial mass
Milky Way
Astrophysics
Galaxy
Dark matter
Halo
Dark matter halo
Virial theorem
Stellar mass
RADIUS
Astronomy
Galactic halo
Star formation
Computer security
Computer science
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/1538-4357/acb92c
- https://iopscience.iop.org/article/10.3847/1538-4357/acb92c/pdf
- OA Status
- gold
- Cited By
- 29
- References
- 74
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4322734732
All OpenAlex metadata
Raw OpenAlex JSON
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https://openalex.org/W4322734732Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/1538-4357/acb92cDigital Object Identifier
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Mass Models of the Milky Way and Estimation of Its Mass from the Gaia DR3 Data SetWork title
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articleOpenAlex work type
- Language
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enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-03-01Full publication date if available
- Authors
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Francesco Sylos Labini, Ž. Chrobáková, R. Capuzzo‐Dolcetta, M. López‐CorredoiraList of authors in order
- Landing page
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https://doi.org/10.3847/1538-4357/acb92cPublisher landing page
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https://iopscience.iop.org/article/10.3847/1538-4357/acb92c/pdfDirect link to full text PDF
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
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https://iopscience.iop.org/article/10.3847/1538-4357/acb92c/pdfDirect OA link when available
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Physics, Galaxy rotation curve, Virial mass, Milky Way, Astrophysics, Galaxy, Dark matter, Halo, Dark matter halo, Virial theorem, Stellar mass, RADIUS, Astronomy, Galactic halo, Star formation, Computer security, Computer scienceTop concepts (fields/topics) attached by OpenAlex
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29Total citation count in OpenAlex
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2025: 10, 2024: 14, 2023: 5Per-year citation counts (last 5 years)
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74Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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