斯皮策微透镜计划作为球状星团行星的探测手段：OGLE-2015-BLG-0448的分析
太阳与恒星天体物理
2019-10-31 v2
摘要
微透镜事件 OGLE-2015-BLG-0448 由斯皮策（Spitzer）观测，且位于球状星团 NGC 6558 的潮汐半径内。该事件具有中等放大率并被密集观测，因此具有探测球状星团中行星分布的潜力。我们测量了 NGC 6558 的自行（(N,E) = (+0.36+-0.10, +1.42+-0.10) mas/yr）以及源，并表明透镜并非星团成员。尽管这一特定事件未探测球状星团中行星的分布，其他潜在的星团透镜事件可使用我们的方法学验证。此外，我们发现利用 OGLE 测光测量的微透镜视差与基于地球与斯皮策之间光变曲线位移发现的值一致。
引用
@article{arxiv.1512.08520,
title = {Spitzer Microlensing Program as a Probe for Globular Cluster Planets. Analysis of OGLE-2015-BLG-0448},
author = {Radosław Poleski and Wei Zhu and Grant W. Christie and Andrzej Udalski and Andrew Gould and Etienne Bachelet and Jesper Skottfelt and Sebastiano Calchi Novati and M. K. Szymański and I. Soszyński and G. Pietrzyński and Ł. Wyrzykowski and K. Ulaczyk and P. Pietrukowicz and Szymon Kozłowski and J. Skowron and P. Mróz and M. Pawlak and C. Beichman and G. Bryden and S. Carey and M. Fausnaugh and B. S. Gaudi and C. B. Henderson and R. W. Pogge and Y. Shvartzvald and B. Wibking and J. C. Yee and T. G. Beatty and J. D. Eastman and J. Drummond and M. Friedmann and M. Henderson and J. A. Johnson and S. Kaspi and D. Maoz and J. McCormick and N. McCrady and T. Natusch and H. Ngan and I. Porritt and H. M. Relles and D. H. Sliski and T. -G. Tan and R. A. Wittenmyer and J. T. Wright and R. A. Street and Y. Tsapras and D. M. Bramich and K. Horne and C. Snodgrass and I. A. Steele and J. Menzies and R. Figuera Jaimes and J. Wambsganss and R. Schmidt and A. Cassan and C. Ranc and S. Mao and V. Bozza and M. Dominik and M. P. G. Hundertmark and U. G. Jørgensen and M. I. Andersen and M. J. Burgdorf and S. Ciceri and G. D'Ago and D. F. Evans and S. -H. Gu and T. C. Hinse and N. Kains and E. Kerins and H. Korhonen and M. Kuffmeier and L. Mancini and A. Popovas and M. Rabus and S. Rahvar and R. T. Rasmussen and G. Scarpetta J. Southworth and J. Surdej and E. Unda-Sanzana and P. Verma and C. von Essen and Y. -B. Wang and O. Wertz},
journal= {arXiv preprint arXiv:1512.08520},
year = {2019}
}
备注
ApJ submitted, 12 pages, 8 figures, 2 tabels