OBSERVATION OF TWO NEW L4 NEPTUNE TROJANS IN THE DARK ENERGY SURVEY SUPERNOVA FIELDS
OBSERVATION OF TWO NEW L4 NEPTUNE TROJANS IN THE DARK ENERGY SURVEY SUPERNOVA FIELDS
复制标题
在暗能量巡天超新星领域对两颗新的 L4 海王星特洛伊星的观测
DOI：
10.3847/0004-6256/151/2/39
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Y. Zhang
中科院分区：
文献类型：
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作者：
D. Gerdes;R. Jennings;G. Bernstein;M. Sako;F. Adams;D. Goldstein;R. Kessler;S. Hamilton;T. Abbott;F. Abdalla;S. Allam;A. Benoit;E. Bertin;D. Brooks;E. Buckley;D. Burke;D. Capozzi;A. Rosell;M. Kind;J. Carretero;C. Cunha;C. D'Andrea;L. Costa;D. Depoy;S. Desai;J. Dietrich;P. Doel;T. Eifler;A. F. Neto;B. Flaugher;J. Frieman;E. Gaztañaga;D. Gruen;R. Gruendl;G. Gutiérrez;K. Honscheid;D. James;K. Kuehn;N. Kuropatkin;O. Lahav;T. Li;M. Maia;M. March;P. Martini;C. Miller;R. Miquel;R. Nichol;B. Nord;R. Ogando;A. Plazas;A. Romer;A. Roodman;E. Sánchez;B. Santiago;M. Schubnell;I. Sevilla;R. C. Smith;M. Soares;F. Sobreira;E. Suchyta;M. Swanson;G. Tarl'e;J. Thaler;A. Walker;W. Wester;Y. Zhang
我们报告发现的第八和第九个已知的特洛伊人在稳定的轨道周围海王星的领先拉格朗日点，L4。2014年QO 441和2014年QP 441是暗能量调查在2013-14和2014-15观测季节期间获得的数据中检测到的，使用的是塞罗托洛洛美洲天文台4米布兰科望远镜上的暗能量相机（DECam）。两者都位于高倾角轨道（分别为18.8 °和19.4 °）。2014年QO 441的偏心率为0.104，是11颗已知的稳定海王星特洛伊行星中偏心率最高的。在这里，我们描述了搜索过程，并调查对象的长期动力学稳定性和物理性质。
We report the discovery of the eighth and ninth known Trojans in stable orbits around Neptune’s leading Lagrange point, L4. The objects 2014 QO441 and 2014 QP441 were detected in data obtained during the 2013–14 and 2014–15 observing seasons by the Dark Energy Survey, using the Dark Energy Camera (DECam) on the 4-m Blanco telescope at Cerro Tololo Inter-American Observatory. Both are in high-inclination orbits (18.°8 and 19.°4, respectively). With an eccentricity of 0.104, 2014 QO441 has the most eccentric orbit of the 11 known stable Neptune Trojans. Here we describe the search procedure and investigate the objects’ long-term dynamical stability and physical properties.