On the non universality of surface density of galaxies
We studied the correlation between the central surface density of dark matter haloes and the halo core radius of galaxy and galaxy recently studied on a wide range of scales. For this aim we used the secondary infall model, that we previously published, to get the halo density profile taking into ac...
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| Опубліковано в: : | Advances in Astronomy and Space Physics |
|---|---|
| Дата: | 2012 |
| Автор: | |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Головна астрономічна обсерваторія НАН України
2012
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/119154 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | On the non universality of surface density of galaxies / A. Del Popolo // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 1. — С. 53-55. — Бібліогр.: 12 назв. — англ. |
Репозитарії
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nasplib_isofts_kiev_ua-123456789-119154 |
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Del Popolo, A. 2017-06-04T18:02:53Z 2017-06-04T18:02:53Z 2012 On the non universality of surface density of galaxies / A. Del Popolo // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 1. — С. 53-55. — Бібліогр.: 12 назв. — англ. 2227-1481 https://nasplib.isofts.kiev.ua/handle/123456789/119154 We studied the correlation between the central surface density of dark matter haloes and the halo core radius of galaxy and galaxy recently studied on a wide range of scales. For this aim we used the secondary infall model, that we previously published, to get the halo density profile taking into account the effect of ordered and random angular momentum, dynamical friction, and adiabatic contraction of the dark matter due to the baryons collapse. We found that the column density within the halo characteristic radius r ͙ is not a universal quantity as claimed by other authors, but it correlates with the halo mass M₂₀₀. The scatter in the slope of the S − M relation is 0.16 ± 0.05, leaving small room for the possibility of a constant surface density. en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics On the non universality of surface density of galaxies Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
On the non universality of surface density of galaxies |
| spellingShingle |
On the non universality of surface density of galaxies Del Popolo, A. |
| title_short |
On the non universality of surface density of galaxies |
| title_full |
On the non universality of surface density of galaxies |
| title_fullStr |
On the non universality of surface density of galaxies |
| title_full_unstemmed |
On the non universality of surface density of galaxies |
| title_sort |
on the non universality of surface density of galaxies |
| author |
Del Popolo, A. |
| author_facet |
Del Popolo, A. |
| publishDate |
2012 |
| language |
English |
| container_title |
Advances in Astronomy and Space Physics |
| publisher |
Головна астрономічна обсерваторія НАН України |
| format |
Article |
| description |
We studied the correlation between the central surface density of dark matter haloes and the halo core radius of galaxy and galaxy recently studied on a wide range of scales. For this aim we used the secondary infall model, that we previously published, to get the halo density profile taking into account the effect of ordered and random angular momentum, dynamical friction, and adiabatic contraction of the dark matter due to the baryons collapse. We found that the column density within the halo characteristic radius r ͙ is not a universal quantity as claimed by other authors, but it correlates with the halo mass M₂₀₀. The scatter in the slope of the S − M relation is 0.16 ± 0.05, leaving small room for the possibility of a constant surface density.
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| issn |
2227-1481 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/119154 |
| fulltext |
|
| citation_txt |
On the non universality of surface density of galaxies / A. Del Popolo // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 1. — С. 53-55. — Бібліогр.: 12 назв. — англ. |
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2025-11-24T04:20:44Z |
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2025-11-24T04:20:44Z |
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