تقرير
The 2L1S/1L2S Degeneracy for Two Microlensing Planet Candidates Discovered by the KMTNet Survey in 2017
| العنوان: | The 2L1S/1L2S Degeneracy for Two Microlensing Planet Candidates Discovered by the KMTNet Survey in 2017 |
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| المؤلفون: | Shin, I. -G., Yee, J. C., Gould, A., Penny, M. T., Bond, I. A., Albrow, M. D., Chung, S. -J., Han, C., Hwang, K. -H., Jung, Y. K., Ryu, Y. -H., Shvartzvald, Y., Cha, S. -M., Kim, D. -J., Kim, H. -W., Kim, S. -L., Lee, C. -U., Lee, D. -J., Lee, Y., Park, B. -G., Pogge, R. W., Abe, F., Barry, R., Bennett, D. P., Bhattacharya, A., Donachie, M., Fujii, H., Fukui, A., Hirao, Y., Itow, Y., Kamei, Y., Kondo, Iona, Koshimoto, N., Li, M. C. A., Matsubara, Y., Miyazaki, S., Muraki, Y., Nagakane, M., Ranc, C., Rattenbury, N. J., Suematsu, Harmon, Sullivan, D. J., Sumi, T., Suzuki, Daisuke, Tristram, P. J., Yamakawa, T., Yonehara, A., Fouqué, P., Zang, W. |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | We report two microlensing planet candidates discovered by the KMTNet survey in $2017$. However, both events have the 2L1S/1L2S degeneracy, which is an obstacle to claiming the discovery of the planets with certainty unless the degeneracy can be resolved. For KMT-2017-BLG-0962, the degeneracy cannot be resolved. If the 2L1S solution is correct, KMT-2017-BLG-0962 might be produced by a super Jupiter-mass planet orbiting a mid-M dwarf host star. For KMT-2017-BLG-1119, the light curve modeling favors the 2L1S solution but higher-resolution observations of the baseline object tend to support the 1L2S interpretation rather than the planetary interpretation. This degeneracy might be resolved by a future measurement of the lens-source relative proper motion. This study shows the problem of resolving 2L1S/1L2S degeneracy exists over a much wider range of conditions than those considered by the theoretical study of Gaudi (1998). Comment: 15 pages, 12 figures, 4 tables, accepted in AJ |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.3847/1538-3881/ab46a5 |
| URL الوصول: | http://arxiv.org/abs/1902.10945 |
| رقم الأكسشن: | edsarx.1902.10945 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.3847/1538-3881/ab46a5 |
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