OGLE-2009-BLG-092/MOA-2009-BLG-137：一个由实时分析预测第二次扰动的戏剧性重复事件
太阳与恒星天体物理
2015-05-19 v1
摘要
我们报告了对一个戏剧性的重复引力微透镜事件OGLE-2009-BLG-092/MOA-2009-BLG-137的分析结果，其光变曲线的特征是在两个不同的峰值附近都存在扰动。我们发现该事件是由源轨迹穿过一个宽分离双星系统各分量相关的中心扰动区域而产生的。该事件的特殊之处在于，第二次扰动发生在第一次扰动之后约100天，并且是由第一次峰值后进行的实时分析所预测的，这表明实时建模可以常规地用于双星和行星事件。利用覆盖第二次峰值的后续观测数据，我们能够唯一地确定透镜系统的物理参数。我们发现该事件发生在一个 bulge 团簇巨星上，并由一个由K型和M型主序星组成的双星透镜产生。双星分量的估计质量分别为和，它们在投影上的间距为。测量到的透镜距离为。我们还探测到了透镜系统的轨道运动。
引用
@article{arxiv.1009.0338,
title = {OGLE-2009-BLG-092/MOA-2009-BLG-137: A Dramatic Repeating Event With the Second Perturbation Predicted by Real-Time Analysis},
author = {Y. -H. Ryu and C. Han and K. -H. Hwang and R. Street and A. Udalski and T. Sumi and A. Fukui and J. -P. Beaulieu and A. Gould and M. Dominik and F. Abe and D. P. Bennett and I. A. Bond and C. S. Botzler and K. Furusawa and F. Hayashi and J. B. Hearnshaw and S. Hosaka and Y. Itow and K. Kamiya and P. M. Kilmartin and A. Korpela and W. Lin and C. H. Ling and S. Makita and K. Masuda and Y. Matsubara and N. Miyake and Y. Muraki and K. Nishimoto and K. Ohnishi and Y. C. Perrott and N. Rattenbury and To. Saito and L. Skuljan and D. J. Sullivan and D. Suzuki and W. L. Sweatman and P. J. Tristram and K. Wada and P. C. M. Yock and M. K. Szymański and M. Kubiak and G. Pietrzyński and I. Soszyński and O. Szewczyk and Ł. Wyrzykowski and K. Ulaczyk and M. Bos and G. W. Christie and D. L. Depoy and A. Gal-Yam and B. S. Gaudi and S. Kaspi and C. -U. Lee and D. Maoz and J. McCormick and B. Monard and D. Moorhouse and R. W. Pogge and D. Polishook and Y. Shvartzvald and A. Shporer and G. Thornley and J. C. Yee and M. D. Albrow and V. Batista and S. Brillant and A. Cassan and A. Cole and E. Corrales and Ch. Coutures and S. Dieters and P. Fouqué and J. Greenhill and J. Menzies and A. Allan and D. M. Bramich and P. Browne and K. Horne and N. Kains and C. Snodgrass and I. Steele and Y. Tsapras and V. Bozza and M. J. Burgdorf and S. Calchi Novati and S. Dreizler and F. Finet and M. Glitrup and F. Grundahl and K. Harpsøe and F. V. Hessman and T. C. Hinse and M. Hundertmark and U. G. Jørgensen and C. Liebig and G. Maier and L. Mancini and M. Mathiasen and S. Rahvar and D. Ricci and G. Scarpetta and J. Skottfelt and J. Surdej and J. Southworth and J. Wambsganss and F. Zimmer},
journal= {arXiv preprint arXiv:1009.0338},
year = {2015}
}
备注
18 pages, 5 figures, 1 table