Ccd photometry of candidate RR Lyrae stars in the Sloan Digital Sky Survey
文献类型：期刊论文
| 作者 | Wu, C ; Qiu, YL; Deng, JS; Hu, JY; Zhao, YH
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| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2005-10-01 |
| 卷号 | 130期号:4页码:1640-1651 |
| 关键词 | Galaxy : halo Galaxy : structure stars : variables : other |
| 英文摘要 | We present unfiltered CCD photometry of a sample of 71 candidate RR Lyrae stars during 2003 and 2004, out of 148 candidate stars that were selected from Sloan Digital Sky Survey (SDSS) commissioning data by Ivezic and coworkers. We obtain light curves of 69 candidate stars and present a catalog of their positions, amplitudes, periods, types, and mean magnitudes. We confirm that the 69 stars are true RR Lyrae variables based on periods and light curves, for the first time for 41 of them. We identify 57 type ab, 11 type c, and 1 type d (double-mode) in our sample. The double-mode RR Lyrae star shows properties similar to globular cluster stars and are unlike field stars of the Galactic halo in the Petersen diagram. We also find one RR Lyrae star that is related to Pal 5 and recover another. In our sample, only two candidate stars do not have a reasonable light curve. We conclude that the ratio of contamination in our sample is less than similar to 8%, which shows that the criteria used by Ivezic and coworkers to select RR Lyrae stars from the SDSS two-epoch data are reliable. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000232270200022 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7015]  |
| 专题 | 国家天文台_空间科学研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, C,Qiu, YL,Deng, JS,et al. Ccd photometry of candidate RR Lyrae stars in the Sloan Digital Sky Survey[J]. ASTRONOMICAL JOURNAL,2005,130(4):1640-1651. |
| APA | Wu, C,Qiu, YL,Deng, JS,Hu, JY,&Zhao, YH.(2005).Ccd photometry of candidate RR Lyrae stars in the Sloan Digital Sky Survey.ASTRONOMICAL JOURNAL,130(4),1640-1651. |
| MLA | Wu, C,et al."Ccd photometry of candidate RR Lyrae stars in the Sloan Digital Sky Survey".ASTRONOMICAL JOURNAL 130.4(2005):1640-1651. |
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来源：国家天文台
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