In this paper, we analyze the observed data of the apparent surface density of 81 globular clusters (GCs) provided by Gaia DR2. The problems of analyzing these observations and their differences from similar data obtained using Hubble Space Telescope (HST) are discussed. Based on the results of this analysis of the quality of the observational data and a number of physical considerations, we divide the GCs into 3 classes and then consider the issues of modeling the apparent surface density from distance. The values of the free parameters of the model are found using the symplectic minimization method. In this case, the free parameters, including the concentration parameter, are found using the 4-parameter generalized model proposed by us.
| Mualliflar | Turaev, S.J. |
|---|---|
| Jurnal | O‘zbekiston fizika jurnali |
| Nashriyot | Ўзбекистон Республикаси Фанлар академияси |
| ISSN | 1025-8817, 2181-077X |
| Nashr sanasi | 2025-01-21 |
| Jild | 26 |
| Son | 4 |
| Til | Ingliz |
| Ilmiy soha | Fizika-matematika |
| DOI | 10.52304/.v26i4.565 |
| Indeksga qo‘shilgan | 2026-08-26 |
DOI: 10.52304/.v26i4.565 · Maqolaning asl sahifasi
видимая поверхностная плотность, параметр концентрации, Gaia DR2, шаровые скопления, HST, космические наблюдения, apparent surface density, concentration parameter, Gaia DR2, globular clusters, HST, space observations
| APA | Turaev, S.J. (2025). Analysis of observational data of globular clusters within the framework of Gaia DR2. O‘zbekiston fizika jurnali, 26(4). https://doi.org/10.52304/.v26i4.565 |
|---|---|
| GOST (OAK) | Turaev, S.J. Analysis of observational data of globular clusters within the framework of Gaia DR2 // O‘zbekiston fizika jurnali. – 2025. – T. 26, № 4. – DOI: 10.52304/.v26i4.565. |
| MLA | Turaev, S.J. “Analysis of observational data of globular clusters within the framework of Gaia DR2.” O‘zbekiston fizika jurnali, 26(4), 2025. https://doi.org/10.52304/.v26i4.565 |
| Chicago | Turaev, S.J. “Analysis of observational data of globular clusters within the framework of Gaia DR2.” O‘zbekiston fizika jurnali, 26(4) (2025). https://doi.org/10.52304/.v26i4.565 |
| Harvard | Turaev, S.J (2025) ‘Analysis of observational data of globular clusters within the framework of Gaia DR2’, O‘zbekiston fizika jurnali, 26(4). https://doi.org/10.52304/.v26i4.565 |
| BibTeX | @article{turaevsj2025,
title = {Analysis of observational data of globular clusters within the framework of Gaia DR2},
author = {Turaev, S.J.},
journal = {O‘zbekiston fizika jurnali},
year = {2025},
volume = {26},
number = {4},
doi = {10.52304/.v26i4.565},
url = {https://doi.org/10.52304/.v26i4.565}
} |
Boshqa maqola uchun iqtibos tayyorlash
line-water solutions was established and their dynamics were studied depending on the temperature of the solution and the concentration of γ-picoline in the solution. Analysis of the research results confirms the…
The formation mechanism of methylglyoxal monomers, dimers, trimers, methylglyoxal+benzene, and methylglyoxal+ethanol complexes was investigated using the density functional theory (DFT) approach and the…
Using optical spectroscopy method the dependence of the electronic structure and spectral properties of asymmetric cyanine dyes − the bases of styryls and methoxystyryls − on their chemical structure, primarily the type…
With deep sorrow we announce the death of Academician Bekhzod Sadykovich Yuldashev, an outstanding physicist, talented organizer of science, public and political figure, President of the Academy of Sciences of the…
The variability of the star TIC 284443963 as a Delta Scuti-type variable has been confirmed and characterized. Aperture photometry has been performed and the star’s light curve has been constructed using TESS mission…
In the paper, we perform a statistical analysis of a catalog of lopsided disk-like galaxies and provide empirical relationships between their physical characteristics. We performed a statistical analysis of 2857…
The motion of a spinless particle in a potential field has been considered. Then we have derived the wave function and energy spectrum for the particle. It has been obtained the gravitational potential energy.
The interaction between light and surface plasmon polaritons is of great interest in the fundamental physics of light-matter interaction. In this work, the reflection efficiency of magnesium-doped aluminum films with…
Представлены численные и аналитические результаты исследования паулиевской восприимчивости двумерного электронного газа в зависимости от концентрации. Анализируются зависимости спиновой восприимчивости от ширины…
В работе исследуется процесс роста оксидных слоев на кремниевых подложках в контролируемых температурных условиях. Кремниевые пластины окисляли в печи в течение двух часов при температуре от 300°С до 1100°С. Минимальные…
O‘zbekiston fizika jurnali — barcha maqolalar · 2025-yil arxivi
This study investigates the empirical relationship between the concentration parameter (λ),which characterizes the central stellar density gradient of globular clusters (GCs), and thephysical properties of black hole…
Observations from the James Webb Space Telescope (JWST) in recent years pose serious challenges to standard cosmology. Such a situation prompts to reconsider the models presented as alternatives to the Lambda-Cold Dark…
This article presents the results of 2018-2023, such as biological diversity, inter-landscape distribution characteristics, density,and number of straggly insects identified from natural and anthropogenic areas of…
This article observational data on the species composition, distribution, population, density, and seasonal damage caused causedby herbivorus bugs. Observationes were carried out in April and September 2021. When…
In the article, the research fields of some species belonging to Paeonia, their significance in human life, adaptation features tovarious ecological conditions are highlighted, and the ecologist groups and other…
This article studies the number of species, population density of terrestrial mollusks of the Topalangdarya basin, located in theSurkhandarya region of Uzbekistan, in various altitudinal regions and biotopes and…
This article sheds light on changes in biomass formation and antimicrobial activity against test pathogenic strains under theinfluence of epigenetic modifiers and elicitors of the endophytic fungus Penicillium…
Shahimardonsoy covered issues such as the soil in the river basin and measures to increase its condition, salinity and fertility, theflora and fauna present in the basin landscape and their conservation.