Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud
Luminosity profiles and dynamical parameters of 12 globular clusters in the Large Magellanic Cloud (SB(s)m) are obtained from the concentric aperture photoelectric photometry of 3 different aged clusters and the collected photometric data of 9 clusters. The total masses of the globular clusters are...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
1990-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1990/v7n2/OJOOBS_1990_v7n2_125.pdf |
| _version_ | 1827393990225297408 |
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| author | Young-Jong Sohn Mun-Suk Chun |
| author_facet | Young-Jong Sohn Mun-Suk Chun |
| author_sort | Young-Jong Sohn |
| collection | DOAJ |
| description | Luminosity profiles and dynamical parameters of 12 globular clusters in the Large Magellanic Cloud (SB(s)m) are obtained from the concentric aperture photoelectric photometry of 3 different aged clusters and the collected photometric data of 9 clusters. The total masses of the globular clusters are the calculated using the equation M⨀ = Mrtj(4Q^2-k^2), which is derived from the theoretical rotation curve for the exponential disk (Chun 1987). These masses lie between 0.3 x 10^4 and 15.8 x 10^4 M⨀ . From the determined total mass and luminosity ratios are also derived. The M/L ratio of a cluster increases with the cluster age; about 0.03 for the youngest clusters (SWB I) and about 0.24 for the oldest clusters (SUB VII). There is a difference in M/L by a factor of 10 between the galactic globular clusters and the old globular clusters in the LCM. |
| first_indexed | 2024-03-08T17:59:29Z |
| format | Article |
| id | doaj.art-b32b5dc6e54844979d3dfe99c086d8cc |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:59:29Z |
| publishDate | 1990-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-b32b5dc6e54844979d3dfe99c086d8cc2024-01-02T02:51:18ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14091990-12-0172125139Mass to Luminosity Ratios of Some Clusters in the Large Magellanic CloudYoung-Jong Sohn0Mun-Suk Chun1Department of Astronomy and Atmospheric Science, Yonsei UniversityDepartment of Astronomy and Atmospheric Science, Yonsei UniversityLuminosity profiles and dynamical parameters of 12 globular clusters in the Large Magellanic Cloud (SB(s)m) are obtained from the concentric aperture photoelectric photometry of 3 different aged clusters and the collected photometric data of 9 clusters. The total masses of the globular clusters are the calculated using the equation M⨀ = Mrtj(4Q^2-k^2), which is derived from the theoretical rotation curve for the exponential disk (Chun 1987). These masses lie between 0.3 x 10^4 and 15.8 x 10^4 M⨀ . From the determined total mass and luminosity ratios are also derived. The M/L ratio of a cluster increases with the cluster age; about 0.03 for the youngest clusters (SWB I) and about 0.24 for the oldest clusters (SUB VII). There is a difference in M/L by a factor of 10 between the galactic globular clusters and the old globular clusters in the LCM.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1990/v7n2/OJOOBS_1990_v7n2_125.pdf |
| spellingShingle | Young-Jong Sohn Mun-Suk Chun Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud Journal of Astronomy and Space Sciences |
| title | Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud |
| title_full | Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud |
| title_fullStr | Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud |
| title_full_unstemmed | Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud |
| title_short | Mass to Luminosity Ratios of Some Clusters in the Large Magellanic Cloud |
| title_sort | mass to luminosity ratios of some clusters in the large magellanic cloud |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1990/v7n2/OJOOBS_1990_v7n2_125.pdf |
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