查詢結果分析
來源資料
相關文獻
- Searching for Open Clusters in the Milky Way Disk
- 森林林下光照度之數學模型建立
- 用二微米巡天觀測(2MASS)資料庫研究年輕星團成員星之空間分佈
- The Photometry, Kinematics and Dynamics of Young Open Cluster NGC 6910
- 年輕人的歡樂Party-OB星協與疏散星團
- Near Infrared Polarimetric Imaging of the Giant HII Region NGC 3576
- IES LM-79-08規格導讀
- Morphology of Galactic Globular Clusters
- 消散雲氣中的疏散星團
- 在疏散星團中尋找系外行星與變星
頁籤選單縮合
題 名 | Searching for Open Clusters in the Milky Way Disk=在銀河系盤面搜尋疏散星團 |
---|---|
作 者 | 傅冠儒; 陳文屏; | 書刊名 | 臺北天文館學報 |
卷 期 | 6 2008.12[民97.12] |
頁 次 | 頁8-12 |
分類號 | 323.84 |
關鍵詞 | 星團; 紅外線觀測; 光度測量; Star cluster; Infrared; Photometry; |
語 文 | 英文(English) |
中文摘要 | 我們利用2MASS 星源目錄搜尋未知的疏散星團,在銀經90度到270 度,銀緯-3.5 度到+3.5 度之間,我們指認出高星球密度、但不是已知星團的區域。利用目視檢驗DSS 與2MASS 影像,最後我們挑出103 個可能是未知疏散星團的區域。對於這些候選星團,我們計算出它們的中心坐標、角直徑、徑向星球密度分佈,以及總星球個數等參數。這裡我們報告四個仍有雲氣相伴的星團,包括OC 0234+6147 、OC 0251+6007 、OC 0456+4722 以及OC 0537+3159 ,它們應該都是年輕星團或星群。我們以OC 0536+3112 為例,說明如何利用可見光光度測量,推算其距離約為1.82 kpc,而年齡則約為0.2 Gyr。 |
英文摘要 | We present the results of star counting of the 2MASS point sources to search for uncharted open clusters (OCs). As the first attempt, we identified regions with stellar density enhancements not associated with previously known star clusters along the Galactic disk, within the band l= 90º to 270º, and b = -3.5º to +3.5º. Visual inspection of the DSS and 2MASS images led to a final list of 103 regions as star cluster candidates, for each of which the central coordinates, angular size, projected stellar density profile, and total number of possible cluster members were derived. Four newly found OCs are presented here, including OC0234+6147, OC0251+6007, OC0456+4722, and OC0537+3159, each of which is associated with nebulosity, so is likely a young stellar group. We show how CCD photometric observations of OC0536+3112 were used to derive an estimated distance of 1.82 kpc and age of 0.2 Gyr. |
本系統中英文摘要資訊取自各篇刊載內容。