Dark matter in the Local Group
The observational properties of galaxies aumulated in the Updated Nearby Galaxy Catalog (UNGC) were used by us to derive an orbital mass of the Milky Way and Andromeda galaxy (M 31) via motions of their 31 and 39 ompanions, respe tively. The ratio of the orbital mass of galaxies, whih is a measure o...
Збережено в:
| Опубліковано в: : | Advances in Astronomy and Space Physics |
|---|---|
| Дата: | 2014 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Головна астрономічна обсерваторія НАН України
2014
|
| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/119814 |
| Теги: |
Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Dark matter in the Local Group / Yu.N. Kudrya, Iu.Iu. Tsykaliuk // Advances in Astronomy and Space Physics. — 2014. — Т. 4., вип. 1-2. — С. 46-50. — Бібліогр.: 15 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
nasplib_isofts_kiev_ua-123456789-119814 |
|---|---|
| record_format |
dspace |
| spelling |
Kudrya, Yu.N. Tsykaliuk, Iu.Iu. 2017-06-09T20:00:37Z 2017-06-09T20:00:37Z 2014 Dark matter in the Local Group / Yu.N. Kudrya, Iu.Iu. Tsykaliuk // Advances in Astronomy and Space Physics. — 2014. — Т. 4., вип. 1-2. — С. 46-50. — Бібліогр.: 15 назв. — англ. 2227-1481 DOI: 10.17721/2227-1481.4.46-50 https://nasplib.isofts.kiev.ua/handle/123456789/119814 The observational properties of galaxies aumulated in the Updated Nearby Galaxy Catalog (UNGC) were used by us to derive an orbital mass of the Milky Way and Andromeda galaxy (M 31) via motions of their 31 and 39 ompanions, respe tively. The ratio of the orbital mass of galaxies, whih is a measure of dark matter, to their stellar mass is ∼ 30. If this value is taken as the average value in the Universe, then in the standard osmologial ΛCDM models it will math the value Ωm ≈ 0.09 instead of the generally a epted value Ωm ≈ 0.28. Taking into aount that this last value is realised only in rih lusters, and that the luster at hand ontains only 10% of the total number of galaxies (while the rest are in groups or field galaxies), our results on firm the well-known problem of "lak of dark matter" in the Loal group. We are grateful to Prof. Igor Kara hentsev for his valuable ideas and help and unknown referee whose omments improved the text. en Головна астрономічна обсерваторія НАН України Advances in Astronomy and Space Physics Dark matter in the Local Group Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Dark matter in the Local Group |
| spellingShingle |
Dark matter in the Local Group Kudrya, Yu.N. Tsykaliuk, Iu.Iu. |
| title_short |
Dark matter in the Local Group |
| title_full |
Dark matter in the Local Group |
| title_fullStr |
Dark matter in the Local Group |
| title_full_unstemmed |
Dark matter in the Local Group |
| title_sort |
dark matter in the local group |
| author |
Kudrya, Yu.N. Tsykaliuk, Iu.Iu. |
| author_facet |
Kudrya, Yu.N. Tsykaliuk, Iu.Iu. |
| publishDate |
2014 |
| language |
English |
| container_title |
Advances in Astronomy and Space Physics |
| publisher |
Головна астрономічна обсерваторія НАН України |
| format |
Article |
| description |
The observational properties of galaxies aumulated in the Updated Nearby Galaxy Catalog (UNGC) were used by us to derive an orbital mass of the Milky Way and Andromeda galaxy (M 31) via motions of their 31 and 39 ompanions, respe tively. The ratio of the orbital mass of galaxies, whih is a measure of dark matter, to their stellar mass is ∼ 30. If this value is taken as the average value in the Universe, then in the standard
osmologial ΛCDM models it will math the value Ωm ≈ 0.09 instead of the generally a epted value Ωm ≈ 0.28. Taking into aount that this last value is realised only in rih lusters, and that the luster at hand ontains only 10% of the total number of galaxies (while the rest are in groups or field galaxies), our results on firm the well-known problem of "lak of dark matter" in the Loal group.
|
| issn |
2227-1481 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/119814 |
| citation_txt |
Dark matter in the Local Group / Yu.N. Kudrya, Iu.Iu. Tsykaliuk // Advances in Astronomy and Space Physics. — 2014. — Т. 4., вип. 1-2. — С. 46-50. — Бібліогр.: 15 назв. — англ. |
| work_keys_str_mv |
AT kudryayun darkmatterinthelocalgroup AT tsykaliukiuiu darkmatterinthelocalgroup |
| first_indexed |
2025-12-07T15:52:03Z |
| last_indexed |
2025-12-07T15:52:03Z |
| _version_ |
1850865324703875072 |