FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4289192010> ?p ?o ?g. }

• W4289192010 endingPage "A79" @default.
• W4289192010 startingPage "A79" @default.
• W4289192010 abstract "We develop a new theoretical framework to generate Besanc{c}on Galaxy Model fast approximate simulations (BGM FASt) to address fundamental questions of the Galactic structure and evolution performing multi-parameter inference. As a first application of our strategy we simultaneously infer the IMF, the star formation history and the stellar mass density in the Solar Neighbourhood. The BGM FASt strategy is based on a reweighing scheme, that uses a specific pre-sampled simulation, and on the assumption that the distribution function of the generated stars in the Galaxy can be described by an analytical expression. To validate BGM FASt we execute a set of tests. Finally, we use BGM FASt with an approximate Bayesian computation algorithm to obtain the posterior PDF of the inferred parameters, by comparing synthetic versus Tycho-2 colour-magnitude diagrams. Results: The validation shows a very good agreement between BGM FASt and the standard BGM, with BGM FASt being $approx 10^4$ times faster. By analysing Tycho-2 data we obtain a thin disc star formation history decreasing in time and a present rate of $1.2 pm 0.2 M_odot/yr$. The resulting total stellar mass density in the Solar Neighbourhood is $0.051_{-0.005}^{+0.002} M_odot/pc^3$ and the local dark matter density is $0.012 pm 0.001 M_odot/pc^3$. For the composite IMF we obtain a slope of $alpha_2={2.1}_{-0.3}^{+0.1}$ in the mass range between $0.5 M_odot$ and $1.53M_odot$. The results of the slope at the high mass range are trustable up to $4M_odot$ and highly depend on the choice of the extinction map (obtaining $alpha_3={2.9}_{-0.2}^{+0.2}$ and $alpha_3={3.7}_{-0.2}^{+0.2}$ respectively, for two different extinction maps). Systematic uncertainties are not included. Conclusions: The good performance of BGM FASt demonstrates that it is a very valuable tool to perform multi-parameter inference using Gaia data releases." @default.
• W4289192010 created "2022-08-01" @default.
• W4289192010 creator A5010503098 @default.
• W4289192010 creator A5045680170 @default.
• W4289192010 creator A5050299954 @default.
• W4289192010 creator A5057159018 @default.
• W4289192010 date "2018-12-01" @default.
• W4289192010 modified "2023-10-14" @default.
• W4289192010 title "BGM FASt: Besançon Galaxy Model for big data" @default.
• W4289192010 cites W1670318221 @default.
• W4289192010 cites W1864516950 @default.
• W4289192010 cites W1921289443 @default.
• W4289192010 cites W1934387688 @default.
• W4289192010 cites W1936840814 @default.
• W4289192010 cites W1968468356 @default.
• W4289192010 cites W1980145009 @default.
• W4289192010 cites W1985063896 @default.
• W4289192010 cites W1986828086 @default.
• W4289192010 cites W2002782470 @default.
• W4289192010 cites W2003942003 @default.
• W4289192010 cites W2004327796 @default.
• W4289192010 cites W2009489905 @default.
• W4289192010 cites W2011490256 @default.
• W4289192010 cites W2015295900 @default.
• W4289192010 cites W2017204453 @default.
• W4289192010 cites W2025020517 @default.
• W4289192010 cites W2033223429 @default.
• W4289192010 cites W2033950450 @default.
• W4289192010 cites W2045973738 @default.
• W4289192010 cites W2067392831 @default.
• W4289192010 cites W2067530731 @default.
• W4289192010 cites W2071830198 @default.
• W4289192010 cites W2082226676 @default.
• W4289192010 cites W2100833883 @default.
• W4289192010 cites W2113744731 @default.
• W4289192010 cites W2160068792 @default.
• W4289192010 cites W2185411747 @default.
• W4289192010 cites W2201176186 @default.
• W4289192010 cites W2592509910 @default.
• W4289192010 cites W2607013364 @default.
• W4289192010 cites W2609118998 @default.
• W4289192010 cites W2737591068 @default.
• W4289192010 cites W2798336535 @default.
• W4289192010 cites W2799268730 @default.
• W4289192010 cites W2890036657 @default.
• W4289192010 cites W3098315045 @default.
• W4289192010 cites W3098823536 @default.
• W4289192010 cites W3099770833 @default.
• W4289192010 cites W3099917911 @default.
• W4289192010 cites W3100942527 @default.
• W4289192010 cites W3101595827 @default.
• W4289192010 cites W3102511967 @default.
• W4289192010 cites W3102685197 @default.
• W4289192010 cites W3103280499 @default.
• W4289192010 cites W3103913416 @default.
• W4289192010 cites W3104016316 @default.
• W4289192010 cites W3104795792 @default.
• W4289192010 cites W3105514098 @default.
• W4289192010 cites W3105794760 @default.
• W4289192010 cites W3106092902 @default.
• W4289192010 cites W3106445279 @default.
• W4289192010 cites W3125894913 @default.
• W4289192010 cites W4292399106 @default.
• W4289192010 cites W4292579650 @default.
• W4289192010 cites W4293311141 @default.
• W4289192010 doi "https://doi.org/10.1051/0004-6361/201833501" @default.
• W4289192010 hasPublicationYear "2018" @default.
• W4289192010 type Work @default.
• W4289192010 citedByCount "16" @default.
• W4289192010 countsByYear W42891920102018 @default.
• W4289192010 countsByYear W42891920102019 @default.
• W4289192010 countsByYear W42891920102020 @default.
• W4289192010 countsByYear W42891920102021 @default.
• W4289192010 countsByYear W42891920102022 @default.
• W4289192010 countsByYear W42891920102023 @default.
• W4289192010 crossrefType "journal-article" @default.
• W4289192010 hasAuthorship W4289192010A5010503098 @default.
• W4289192010 hasAuthorship W4289192010A5045680170 @default.
• W4289192010 hasAuthorship W4289192010A5050299954 @default.
• W4289192010 hasAuthorship W4289192010A5057159018 @default.
• W4289192010 hasBestOaLocation W42891920101 @default.
• W4289192010 hasConcept C121332964 @default.
• W4289192010 hasConcept C125857072 @default.
• W4289192010 hasConcept C150846664 @default.
• W4289192010 hasConcept C168589115 @default.
• W4289192010 hasConcept C189159749 @default.
• W4289192010 hasConcept C2780897414 @default.
• W4289192010 hasConcept C44870925 @default.
• W4289192010 hasConcept C98444146 @default.
• W4289192010 hasConceptScore W4289192010C121332964 @default.
• W4289192010 hasConceptScore W4289192010C125857072 @default.
• W4289192010 hasConceptScore W4289192010C150846664 @default.
• W4289192010 hasConceptScore W4289192010C168589115 @default.
• W4289192010 hasConceptScore W4289192010C189159749 @default.
• W4289192010 hasConceptScore W4289192010C2780897414 @default.
• W4289192010 hasConceptScore W4289192010C44870925 @default.
• W4289192010 hasConceptScore W4289192010C98444146 @default.
• W4289192010 hasFunder F4320320883 @default.

• next