MOA-2010-BLG-328Lb：一颗环绕极晚型 M 矮星运行的亚海王星？
地球与行星天体物理
2015-06-17 v2
摘要
我们分析了行星微引力透镜事件 MOA-2010-BLG-328。最佳拟合结果显示宿主恒星质量为 Mh = 0.11+/-0.01 M_{sun}，行星质量为 Mp = 9.2+/-2.2M_Earth，分别对应一颗极晚型 M 矮星和一颗亚海王星质量的行星。该系统位于 DL = 0.81 +/- 0.10 kpc 处，投影分离距离为 r = 0.92 +/- 0.16 AU。由于宿主恒星先验不可能的近距离以及该系统的异常性质，我们考虑了微透镜视差信号（决定宿主质量和距离）实际上是由被误解释为视差的 xallarap（源轨道运动）引起的可能性。我们展示了一个支持视差解的结果，即使考虑到其宿主距离很近。我们表明，未来的高分辨率天体测量测量可以决定性地解决这些解中剩余的模糊性。
引用
@article{arxiv.1309.7714,
title = {MOA-2010-BLG-328Lb: a sub-Neptune orbiting very late M dwarf ?},
author = {K. Furusawa and A. Udalski and T. Sumi and D. P. Bennett and I. A. Bond and A. Gould and U. G. Jorgensen and C. Snodgrass and D. Dominis Prester and M. D. Albrow and F. Abe and C. S. Botzler and P. Chote and M. Freeman and A. Fukui and P. Harris and Y. Itow and C. H. Ling and K. Masuda and Y. Matsubara and N. Miyake and Y. Muraki and K. Ohnishi and N. J. Rattenbury and To. Saito 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. Szymanski and I. Soszynski and M. Kubiak and R. Poleski and K. Ulaczyk and G. Pietrzynski and L. Wyrzykowski and J. Y. Choi and G. W. Christie and D. L. DePoy and S. Dong and J. Drummond and B. S. Gaudi and C. Han and L. -W. Hung and Y. -K. Jung and C. -U. Lee and J. McCormick and D. Moorhouse and T. Natusch and M. Nola and E. Ofek and B. G. Park and H. Park and R. W. Pogge and I. -G. Shin and J. Skowron and G. Thornley and J. C. Yee and K. A. Alsubai and V. Bozza and P. Browne and M. J. Burgdorf and S. Calchi Novati and P. Dodds and M. Dominik and F. Finet and T. Gerner and S. Hardis and K. Harpsoe and T. C. Hinse and M. Hundertmark and N. Kains and E. Kerins and C. Liebig and L. Mancini and M. Mathiasen and M. T. Penny and S. Proft and S. Rahvar and D. Ricci and G. Scarpetta and S. Schafer and F. Schonebeck and J. Southworth and J. Surdej and J. Wambsganss and R. A. Street and D. M. Bramich and I. A. Steele and Y. Tsapras and K. Horne and J. Donatowicz and K. C. Sahu and E. Bachelet and V. Batista and T. G. Beatty and J. -P. Beaulieu and C. S. Bennett and C. Black and R. Bowens-Rubin and S. Brillant and J. A. R. Caldwell and A. Cassan and A. A. Cole and E. Corrales and C. Coutures and S. Dieters and P. Fouque and J. Greenhill and C. B. Henderson and D. Kubas and J. -B. Marquette and R. Martin and J. W. Menzies and B. Shappee and A. Williams and D. Wouters and J. van Saders and R. Zellem and M. Zub},
journal= {arXiv preprint arXiv:1309.7714},
year = {2015}
}
备注
30 pages, 6 figures. accepted for publication in ApJ. Figure 1 and 2 are updated