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A Survey of Star Clusters in the Central Plane Region of the Milky Way : 우리 은하 중심부 영역에 대한 성단 탐사
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이명균 | - |
| dc.contributor.author | 류진혁 | - |
| dc.date.accessioned | 2018-11-12T00:54:18Z | - |
| dc.date.available | 2018-11-12T00:54:18Z | - |
| dc.date.issued | 2018-08 | - |
| dc.identifier.other | 000000153102 | - |
| dc.identifier.uri | https://hdl.handle.net/10371/143018 | - |
| dc.description | 학위논문 (박사)-- 서울대학교 대학원 : 자연과학대학 물리·천문학부(천문학전공), 2018. 8. 이명균. | - |
| dc.description.abstract | This thesis presents a study of the star clusters in the central Galactic plane region based on the wide-field infrared photometric surveys. Star clusters are considered to be good tools for investigating the Milky Way, especially in an aspect of tracing the Galactic structure. We discover, list, and investigate new clusters from embedded clusters to globular clusters in the central Galactic plane region, which is a less studied region with star clusters.
We present the discovery of new star clusters in the central plane region ( | - |
| dc.description.tableofcontents | 1 Introduction 1
1.1 The Milky Way . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Star Clusters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2.1 Open Clusters . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2.2 Globular Clusters . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.2.3 Other Clusters . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.3 Star Cluster Surveys in the Central Plane Region of the Milky Way 8 1.4 Globular Clusters in the Central Plane Region of the Milky Way . . 11 1.5 Purpose and Outline of the Thesis . . . . . . . . . . . . . . . . . . . 11 2 A WISE Survey of New Star Clusters in the Central Plane Region of the Milky Way 13 2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 2.2 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2.3 Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2.3.1 Visual Search for Cluster Candidates . . . . . . . . . . . . . . 18 2.3.2 Classification of the Cluster Candidates . . . . . . . . . . . . 19 2.4 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 2.4.1 A Catalog of New Clusters . . . . . . . . . . . . . . . . . . . 28 2.4.2 Sizes of the New Clusters . . . . . . . . . . . . . . . . . . . . 30 2.4.3 Spatial Distributions of the New Clusters . . . . . . . . . . . 32 2.4.4 Case Studies of 15 Class A Clusters Using CMDs . . . . . . . 38 2.5 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 2.5.1 Comparison to Known Clusters . . . . . . . . . . . . . . . . . 43 2.5.2 Number Distributions of the Clusters in the Galactic Latitude and Longitude . . . . . . . . . . . . . . . . . . . . . . . . . . 45 2.6 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 3 Discovery of Two New Globular Clusters in the Milky Way 53 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 3.2 Discovery of RLGC 1 and RLGC 2 . . . . . . . . . . . . . . . . . . . 55 3.2.1 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55 3.2.2 Morphological Features . . . . . . . . . . . . . . . . . . . . . 56 3.2.3 Radial Number Density Profiles . . . . . . . . . . . . . . . . . 56 3.2.4 CMDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 3.3 Physical Parameters of RLGC 1 and RLGC 2 . . . . . . . . . . . . . 59 3.3.1 Structural Parameters . . . . . . . . . . . . . . . . . . . . . . 59 3.3.2 Distance, Metallicity and Reddening of RLGC 1 and RLGC 2 61 3.4 Discussion and Conclusion . . . . . . . . . . . . . . . . . . . . . . . . 63 3.4.1 Spatial Locations . . . . . . . . . . . . . . . . . . . . . . . . . 63 3.4.2 Absolute Magnitudes . . . . . . . . . . . . . . . . . . . . . . . 63 3.4.3 Structural Parameters . . . . . . . . . . . . . . . . . . . . . . 65 3.4.4 Concluding Remarks . . . . . . . . . . . . . . . . . . . . . . . 65 4 Summary and Conclusion 67 Bibliography 71 A CMDs, Grayscale Maps, and RDP of 15 Class A Clusters 79 B The Statistical CMD Background Subtraction Method 95 C The Full Catalog of the WISE Clusters 97 요 약 153 | - |
| dc.language.iso | en | - |
| dc.publisher | 서울대학교 대학원 | - |
| dc.subject.ddc | 523.01 | - |
| dc.title | A Survey of Star Clusters in the Central Plane Region of the Milky Way | - |
| dc.title.alternative | 우리 은하 중심부 영역에 대한 성단 탐사 | - |
| dc.type | Thesis | - |
| dc.contributor.AlternativeAuthor | Ryu Jinhyuk | - |
| dc.description.degree | Doctor | - |
| dc.contributor.affiliation | 자연과학대학 물리·천문학부(천문학전공) | - |
| dc.date.awarded | 2018-08 | - |
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