Local elliptical galaxies: Some aspects of theory vs. observations
In this paper we analyze on, the sample of the local elliptical galaxies, some predictions of various cosmological theories. We start with the sample of ellipticals described in Samurović (2007b) and confront the established concentration parameters and mass-to-light ratios of these objects with var...
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| Format: | Article |
| Language: | English |
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Astronomical Observatory, Department of Astronomy, Belgrade
2007-01-01
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| Series: | Serbian Astronomical Journal |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-698X/2007/1450-698X0775007S.pdf |
| _version_ | 1818204131007922176 |
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| author | Samurović S. |
| author_facet | Samurović S. |
| author_sort | Samurović S. |
| collection | DOAJ |
| description | In this paper we analyze on, the sample of the local elliptical galaxies, some predictions of various cosmological theories. We start with the sample of ellipticals described in Samurović (2007b) and confront the established concentration parameters and mass-to-light ratios of these objects with various cosmological models, i.e. models given by Navarro, Frank and White (NFW) (1996, 1997) and Burkert (1995), respectively. We find that the bright galaxy (NGC 5846), for which the sum α + β is high, can be reasonably modelled by the NFW models. The Burkert model provides rather good predictions of the dark matter content at one effective radius. There is an indication that bright ellipticals (MB >˜ -21.0) are more dark matter dominated that the fainter ones (MB >˜ -21.0). |
| first_indexed | 2024-12-12T03:36:21Z |
| format | Article |
| id | doaj.art-f5fca2b9ff00471bb1abc2004dacb695 |
| institution | Directory Open Access Journal |
| issn | 1450-698X 1820-9289 |
| language | English |
| last_indexed | 2024-12-12T03:36:21Z |
| publishDate | 2007-01-01 |
| publisher | Astronomical Observatory, Department of Astronomy, Belgrade |
| record_format | Article |
| series | Serbian Astronomical Journal |
| spelling | doaj.art-f5fca2b9ff00471bb1abc2004dacb6952022-12-22T00:39:47ZengAstronomical Observatory, Department of Astronomy, BelgradeSerbian Astronomical Journal1450-698X1820-92892007-01-01200717571310.2298/SAJ0775007S1450-698X0775007SLocal elliptical galaxies: Some aspects of theory vs. observationsSamurović S.0Astronomical Observatory, BelgradeIn this paper we analyze on, the sample of the local elliptical galaxies, some predictions of various cosmological theories. We start with the sample of ellipticals described in Samurović (2007b) and confront the established concentration parameters and mass-to-light ratios of these objects with various cosmological models, i.e. models given by Navarro, Frank and White (NFW) (1996, 1997) and Burkert (1995), respectively. We find that the bright galaxy (NGC 5846), for which the sum α + β is high, can be reasonably modelled by the NFW models. The Burkert model provides rather good predictions of the dark matter content at one effective radius. There is an indication that bright ellipticals (MB >˜ -21.0) are more dark matter dominated that the fainter ones (MB >˜ -21.0).http://www.doiserbia.nb.rs/img/doi/1450-698X/2007/1450-698X0775007S.pdfgalaxies: kinematics and dynamicsgalaxies: elliptical and lenticularcDgalaxies: structuredark matter |
| spellingShingle | Samurović S. Local elliptical galaxies: Some aspects of theory vs. observations Serbian Astronomical Journal galaxies: kinematics and dynamics galaxies: elliptical and lenticular cD galaxies: structure dark matter |
| title | Local elliptical galaxies: Some aspects of theory vs. observations |
| title_full | Local elliptical galaxies: Some aspects of theory vs. observations |
| title_fullStr | Local elliptical galaxies: Some aspects of theory vs. observations |
| title_full_unstemmed | Local elliptical galaxies: Some aspects of theory vs. observations |
| title_short | Local elliptical galaxies: Some aspects of theory vs. observations |
| title_sort | local elliptical galaxies some aspects of theory vs observations |
| topic | galaxies: kinematics and dynamics galaxies: elliptical and lenticular cD galaxies: structure dark matter |
| url | http://www.doiserbia.nb.rs/img/doi/1450-698X/2007/1450-698X0775007S.pdf |
| work_keys_str_mv | AT samurovics localellipticalgalaxiessomeaspectsoftheoryvsobservations |