Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity
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The global properties of elliptical galaxies are connected through the so-called fundamental plane of ellipticals, which is an empirical relation between their parameters: effective radius, central velocity dispersion and mean surface brightness within the effective radius. We investigated the relation between the parameters of the fundamental plane equation and the parameters of modified gravity potential f ( R ) . With that aim, we compared theoretical predictions for circular velocity in f ( R ) gravity with the corresponding values from a large sample of observed elliptical galaxies. Besides, we consistently reproduced the values of coefficients of the fundamental plane equation as deduced from observations, showing that the photometric quantities like mean surface brightness are related to gravitational parameters. We show that this type of modified gravity, especially its power-law version— R n , is able to reproduce the stellar dynamics in elliptical galaxies. In addition, it is... shown that R n gravity fits the observations very well, without the need for a dark matter.
Ključne reči:
modified theories of gravity / methods: analytical / methods: numerical / galaxies: elliptical / galaxies: fundamental parametersIzvor:
Atoms, 2018, 7, 1, 4-Finansiranje / projekti:
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy, iniziative specifiche TEONGRAV
- Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Italy, iniziative specifiche QGSKY
- Gravitacija i struktura kosmosa na velikim skalama (RS-MESTD-Basic Research (BR or ON)-176003)
- Bilateral cooperation between Serbia and Italy [451-03-01231/2015-09/1 "Testing Extended Theories of Gravity at different astrophysical scales"]
- COST Action [CA15117 (CANTATA)]
DOI: 10.3390/atoms7010004
ISSN: 2218-2004
WoS: 000464284200001
Scopus: 2-s2.0-85066462851
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Borka Jovanović, Vesna AU - Jovanović, Predrag AU - Borka, Duško AU - Capozziello, Salvatore PY - 2018 UR - http://www.mdpi.com/2218-2004/7/1/4 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8218 AB - The global properties of elliptical galaxies are connected through the so-called fundamental plane of ellipticals, which is an empirical relation between their parameters: effective radius, central velocity dispersion and mean surface brightness within the effective radius. We investigated the relation between the parameters of the fundamental plane equation and the parameters of modified gravity potential f ( R ) . With that aim, we compared theoretical predictions for circular velocity in f ( R ) gravity with the corresponding values from a large sample of observed elliptical galaxies. Besides, we consistently reproduced the values of coefficients of the fundamental plane equation as deduced from observations, showing that the photometric quantities like mean surface brightness are related to gravitational parameters. We show that this type of modified gravity, especially its power-law version— R n , is able to reproduce the stellar dynamics in elliptical galaxies. In addition, it is shown that R n gravity fits the observations very well, without the need for a dark matter. T2 - Atoms T1 - Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity VL - 7 IS - 1 SP - 4 DO - 10.3390/atoms7010004 ER -
@article{ author = "Borka Jovanović, Vesna and Jovanović, Predrag and Borka, Duško and Capozziello, Salvatore", year = "2018", abstract = "The global properties of elliptical galaxies are connected through the so-called fundamental plane of ellipticals, which is an empirical relation between their parameters: effective radius, central velocity dispersion and mean surface brightness within the effective radius. We investigated the relation between the parameters of the fundamental plane equation and the parameters of modified gravity potential f ( R ) . With that aim, we compared theoretical predictions for circular velocity in f ( R ) gravity with the corresponding values from a large sample of observed elliptical galaxies. Besides, we consistently reproduced the values of coefficients of the fundamental plane equation as deduced from observations, showing that the photometric quantities like mean surface brightness are related to gravitational parameters. We show that this type of modified gravity, especially its power-law version— R n , is able to reproduce the stellar dynamics in elliptical galaxies. In addition, it is shown that R n gravity fits the observations very well, without the need for a dark matter.", journal = "Atoms", title = "Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity", volume = "7", number = "1", pages = "4", doi = "10.3390/atoms7010004" }
Borka Jovanović, V., Jovanović, P., Borka, D.,& Capozziello, S.. (2018). Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity. in Atoms, 7(1), 4. https://doi.org/10.3390/atoms7010004
Borka Jovanović V, Jovanović P, Borka D, Capozziello S. Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity. in Atoms. 2018;7(1):4. doi:10.3390/atoms7010004 .
Borka Jovanović, Vesna, Jovanović, Predrag, Borka, Duško, Capozziello, Salvatore, "Fundamental Plane of Elliptical Galaxies in f(R) Gravity: The Role of Luminosity" in Atoms, 7, no. 1 (2018):4, https://doi.org/10.3390/atoms7010004 . .