Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP
Photoelectric observations of the neglected eclipsing binary VZ Cep were made on four night during the observing season of 1984 at Sobaeksan Astronomy Observatory. The UBV light curves were secured incompletely with the gap in 0.35-0.75 phases. From the observations three times of minimum lights wer...
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
1998-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1998/v15n2/OJOOBS_1998_v15n2_297.pdf |
| _version_ | 1797368302644756480 |
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| author | Chun-Hwey Kim Jae Woo Lee Young-Sook Ahn Wonyong Han |
| author_facet | Chun-Hwey Kim Jae Woo Lee Young-Sook Ahn Wonyong Han |
| author_sort | Chun-Hwey Kim |
| collection | DOAJ |
| description | Photoelectric observations of the neglected eclipsing binary VZ Cep were made on four night during the observing season of 1984 at Sobaeksan Astronomy Observatory. The UBV light curves were secured incompletely with the gap in 0.35-0.75 phases. From the observations three times of minimum lights were determined in three band-passes, which formed one weighted minimum epoch (JD Hel 2446009.0453). With our observations, and improved light elements for VZ Cep is determined using all the photoelectric and CCD times of minimum lights published so far. The (O-C) resid-uals calculated with our light elements show small varying scatters which cannot be negligible. From the analyses of all the times of minima with the Scargles(1982)period-searching and a curve fitting methods, we found possible periodic oscillations of the (O-C) residuals with the period of 1. y26 and the amplitude of 0.d0032. These results, however, have to be considered as a preliminary values until complete analysis for the minimum lights of VZ Cep with enough observational data. Future observations of this binary system are urgently prompted. |
| first_indexed | 2024-03-08T17:30:33Z |
| format | Article |
| id | doaj.art-46a65d5ff4164b3bbf137222a807d616 |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T17:30:33Z |
| publishDate | 1998-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-46a65d5ff4164b3bbf137222a807d6162024-01-02T15:39:43ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14091998-12-01152297306Photoelectric Observations and Period Study of Eclipsing Binary VZ CEPChun-Hwey Kim0Jae Woo Lee1Young-Sook Ahn2Wonyong Han3Department of Astronomy & Space Science, Chungbuk National University, KoreaDepartment of Astronomy & Space Science, Chungbuk National University, KoreaKorea Astronomy ObservatoryKorea Astronomy ObservatoryPhotoelectric observations of the neglected eclipsing binary VZ Cep were made on four night during the observing season of 1984 at Sobaeksan Astronomy Observatory. The UBV light curves were secured incompletely with the gap in 0.35-0.75 phases. From the observations three times of minimum lights were determined in three band-passes, which formed one weighted minimum epoch (JD Hel 2446009.0453). With our observations, and improved light elements for VZ Cep is determined using all the photoelectric and CCD times of minimum lights published so far. The (O-C) resid-uals calculated with our light elements show small varying scatters which cannot be negligible. From the analyses of all the times of minima with the Scargles(1982)period-searching and a curve fitting methods, we found possible periodic oscillations of the (O-C) residuals with the period of 1. y26 and the amplitude of 0.d0032. These results, however, have to be considered as a preliminary values until complete analysis for the minimum lights of VZ Cep with enough observational data. Future observations of this binary system are urgently prompted.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1998/v15n2/OJOOBS_1998_v15n2_297.pdf |
| spellingShingle | Chun-Hwey Kim Jae Woo Lee Young-Sook Ahn Wonyong Han Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP Journal of Astronomy and Space Sciences |
| title | Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP |
| title_full | Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP |
| title_fullStr | Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP |
| title_full_unstemmed | Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP |
| title_short | Photoelectric Observations and Period Study of Eclipsing Binary VZ CEP |
| title_sort | photoelectric observations and period study of eclipsing binary vz cep |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1998/v15n2/OJOOBS_1998_v15n2_297.pdf |
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