Observational evidence of fractality in the large-scale distribution of galaxies
For a sample of 133 991 galaxies distributed in the sky region 100° < a < 270° and 7° < δ < 65° with a redshift 0.0057 < z < 0.12, extracted from the SDSS NASA/AMES Value Added Galaxy Catalog (amesvagc), we estimate the fractal dimension D of its spatial distribution by means of tw...
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| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2021
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/175913 |
| Aporte de: |
| Sumario: | For a sample of 133 991 galaxies distributed in the sky region 100° < a < 270° and 7° < δ < 65° with a redshift 0.0057 < z < 0.12, extracted from the SDSS NASA/AMES Value Added Galaxy Catalog (amesvagc), we estimate the fractal dimension D of its spatial distribution by means of two different methods. First, using an algorithm to estimate the correlation dimension. The second method, in a novel approach, creates a graph from the data and estimates the graph dimension purely from connectivity information. By means of both methods we obtain D ~ 2 in spatial scales below 20 Mpc, which agrees with previous works. This result shows the non-homogeneity of galaxies distribution within the range of studied scales. |
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