Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53
We report the discovery of 17 new RR Lyrae variables in the central region (r≤1’) of the globular cluster M53. There candidates were identified by using the Welch & Stetson (1993) technique and confirmed by checking individual light curves in both B and V bands. The color-magnitude diagram of th...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
1999-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1999/v16n2/OJOOBS_1999_v16n2_115.pdf |
| _version_ | 1797369726679121920 |
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| author | Sangmo Sohn Soo-Chang Rey Young-Wook Lee Yong-Ik Byun Mun-Suk Chun |
| author_facet | Sangmo Sohn Soo-Chang Rey Young-Wook Lee Yong-Ik Byun Mun-Suk Chun |
| author_sort | Sangmo Sohn |
| collection | DOAJ |
| description | We report the discovery of 17 new RR Lyrae variables in the central region (r≤1’) of the globular cluster M53. There candidates were identified by using the Welch & Stetson (1993) technique and confirmed by checking individual light curves in both B and V bands. The color-magnitude diagram of the horizontal-branch stars in the central region is compared with that for stars observed in the outer region by Rey et al. (1998). Including the new data from this study, we estimate the fraction of c typeRR Lyrae variables, n(c)/n(ab + c), to be 0.43 which agrees well with the valuse of other Oosterhoff group II clusters. |
| first_indexed | 2024-03-08T17:51:04Z |
| format | Article |
| id | doaj.art-5da53f0ae8c7449e8e04a15c2bcaa365 |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:51:04Z |
| publishDate | 1999-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-5da53f0ae8c7449e8e04a15c2bcaa3652024-01-02T07:56:57ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14091999-12-01162115130Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53Sangmo Sohn0Soo-Chang Rey1Young-Wook Lee2Yong-Ik Byun3Mun-Suk Chun4Center for Space Astrophysics, Yonsei University, Seoul 120-749, KoreaCenter for Space Astrophysics, Yonsei University, Seoul 120-749, KoreaCenter for Space Astrophysics, Yonsei University, Seoul 120-749, KoreaCenter for Space Astrophysics, Yonsei University, Seoul 120-749, KoreaDepartment of Astronomy, Yonsei University, Seoul 120-749, KoreaWe report the discovery of 17 new RR Lyrae variables in the central region (r≤1’) of the globular cluster M53. There candidates were identified by using the Welch & Stetson (1993) technique and confirmed by checking individual light curves in both B and V bands. The color-magnitude diagram of the horizontal-branch stars in the central region is compared with that for stars observed in the outer region by Rey et al. (1998). Including the new data from this study, we estimate the fraction of c typeRR Lyrae variables, n(c)/n(ab + c), to be 0.43 which agrees well with the valuse of other Oosterhoff group II clusters.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1999/v16n2/OJOOBS_1999_v16n2_115.pdf |
| spellingShingle | Sangmo Sohn Soo-Chang Rey Young-Wook Lee Yong-Ik Byun Mun-Suk Chun Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 Journal of Astronomy and Space Sciences |
| title | Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 |
| title_full | Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 |
| title_fullStr | Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 |
| title_full_unstemmed | Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 |
| title_short | Discovery of New RR Lyrae Stars in the Center of the Globular Cluster M53 |
| title_sort | discovery of new rr lyrae stars in the center of the globular cluster m53 |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1999/v16n2/OJOOBS_1999_v16n2_115.pdf |
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