Dark matter in massive early-type galaxies: 100 years of the jeans equations(Article)(Open Access)
- Astronomical Observatory, Volgina 7, Belgrade, 11060, Serbia
Abstract
In 1919 James Jeans published the book Problems of Cosmogony and Stellar Dynamics in which he summarized his work on dynamics of stellar systems based on his papers published from 1915 onwards. To mark the centenary of this publication we present here one application of his work relevant for contemporary research of galaxies: we analyze the problem of dark matter in massive early-type galaxies (ellipticals and lenticulars) using various available observational data. After discussing the basics of the Jeans equations we study their application on the integrated stellar spectra of galaxies, planetary nebula data and, especially, globular cluster data. We rely on both Newtonian and MOND frameworks and show their advantages and drawbacks. To infer the contribution of the dark component in early-type galaxies we rely on several stellar population synthesis models. It is shown that dark matter does not dominate in the inner regions of early-type galaxies, but becomes more important beyond three effective radii. © 2019 The Author(s).
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| 176021 | ||
| European Commission See opportunities by EC | 256772 | EC |
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Acknowledgements \u2013 This work was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia (MEST-DRS) through project no. 176021, \u201CVisible and Invisible Matter in Nearby Galaxies: Theory and Observations\u201D. The usage of the HyperLeda database (http://leda.univ-lyon1.fr) is acknowledged. The author thanks Dr. M. B\u00EDlek for numerous useful discussions and for his valuable comments on the parts of this manuscript. The author thanks Dr. A. Vu-dragovi\u0107for producing Fig. 1 and for numerous useful discussions. Useful discussions with M. Jovanovi\u0107, Dr. O. Vince, Dr. M. \u0106irkovi\u0107, Dr. B. Vukoti\u0107 and Dr. S. Kne\u02C7zevi\u0107are also acknowledged, as well as
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the work of the technical operators at the Astronomical Station Vidojevica, M. Sekuli\u0107 and P. Kos-tic\u0107. The financial support by the European Commission through project BELISSIMA (BELgrade Initiative for Space Science, Instrumentation and Modelling in Astrophysics, call FP7-REGPOT-2010-5, contract No. 256772) which was used to procure the Milankovi\u0107\u2019 1.40 m telescope with the support from the MESTDRS is acknowledged as well as the the continued support of the MESTDRS related to the work of the Astronomical Station Vidojevica.
- ISSN: 1450698X
- Source Type: Journal
- Original language: English
- DOI: 10.2298/SAJ190408004S
- Document Type: Article
- Publisher: Astronomical Observatory
Samurović, S.; Astronomical Observatory, Volgina 7, Belgrade, Serbia;
© Copyright 2020 Elsevier B.V., All rights reserved.