Photometric Study on the Spot-Double Star XY Ursae Majoris (II)
The photometric behaviour of XY UMa, an eclipsing binary showing photospheric and chromospheric activity, has been described by spot hypothesis. They are based on the all the available UBV light curves, which were carried out by Geyer since 1955. A "spherical rectangular" spot model shows...
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| Format: | Article |
| Language: | English |
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The Korean Space Science Society
1988-12-01
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| Series: | Journal of Astronomy and Space Sciences |
| Online Access: | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1988/v5n2/OJOOBS_1988_v5n2_97.pdf |
| _version_ | 1797331214732886016 |
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| author | Woo-Baik Lee |
| author_facet | Woo-Baik Lee |
| author_sort | Woo-Baik Lee |
| collection | DOAJ |
| description | The photometric behaviour of XY UMa, an eclipsing binary showing photospheric and chromospheric activity, has been described by spot hypothesis. They are based on the all the available UBV light curves, which were carried out by Geyer since 1955. A "spherical rectangular" spot model shows very pronounced spot activities during the last 30 years. On the average, the spot covered about 16% of the visible hemisphere. Observational evidence for photospheric and chromospheric activities on the XY UMa and related systems are also discussed. |
| first_indexed | 2024-03-08T07:31:10Z |
| format | Article |
| id | doaj.art-77f6b4b5cbb24f1a806b343ffcadbc7d |
| institution | Directory Open Access Journal |
| issn | 2093-5587 2093-1409 |
| language | English |
| last_indexed | 2024-03-08T07:31:10Z |
| publishDate | 1988-12-01 |
| publisher | The Korean Space Science Society |
| record_format | Article |
| series | Journal of Astronomy and Space Sciences |
| spelling | doaj.art-77f6b4b5cbb24f1a806b343ffcadbc7d2024-02-02T20:26:31ZengThe Korean Space Science SocietyJournal of Astronomy and Space Sciences2093-55872093-14091988-12-015297109Photometric Study on the Spot-Double Star XY Ursae Majoris (II)Woo-Baik Lee0Institute of Space Science and Astronomy, Daejeon 302-348The photometric behaviour of XY UMa, an eclipsing binary showing photospheric and chromospheric activity, has been described by spot hypothesis. They are based on the all the available UBV light curves, which were carried out by Geyer since 1955. A "spherical rectangular" spot model shows very pronounced spot activities during the last 30 years. On the average, the spot covered about 16% of the visible hemisphere. Observational evidence for photospheric and chromospheric activities on the XY UMa and related systems are also discussed.http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1988/v5n2/OJOOBS_1988_v5n2_97.pdf |
| spellingShingle | Woo-Baik Lee Photometric Study on the Spot-Double Star XY Ursae Majoris (II) Journal of Astronomy and Space Sciences |
| title | Photometric Study on the Spot-Double Star XY Ursae Majoris (II) |
| title_full | Photometric Study on the Spot-Double Star XY Ursae Majoris (II) |
| title_fullStr | Photometric Study on the Spot-Double Star XY Ursae Majoris (II) |
| title_full_unstemmed | Photometric Study on the Spot-Double Star XY Ursae Majoris (II) |
| title_short | Photometric Study on the Spot-Double Star XY Ursae Majoris (II) |
| title_sort | photometric study on the spot double star xy ursae majoris ii |
| url | http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/1988/v5n2/OJOOBS_1988_v5n2_97.pdf |
| work_keys_str_mv | AT woobaiklee photometricstudyonthespotdoublestarxyursaemajorisii |