面向太阳系规模轨道的幼年巨行星直接成像发现
地球与行星天体物理
2025-07-09 v1
摘要
HD 135344 AB 是一个年轻的视觉二元星系，以次星周的原始盘最为人所知。另一方面，A0 型主星的周围环境已经耗竭。因此，HD 135344 A 是探索最近形成的巨行星的理想目标，因为它不被尘埃遮蔽。我们对 HD 135344 A 进行了搜索和表征，探寻面向约 10 au 的次星系伴星。我们使用 VLT/SPHERE 在 和 波段观测 HD 135344 A，并获得 和 的光谱。此外，我们对检测到的伴星进行 VLTI/GRAVITY 观测，以进一步进行 astrometric 和光谱确认。我们发现了靠近的幼年巨行星 HD 135344 Ab，质量约为 10 。多时段 astrometry 确认了其束缚性质，基于 common parallax 和 common proper motion。这明确排除了非稳态背景星的情形。行星轨道的半长轴约为 15-20 au，光度测量值与 mid L 型天体相符。推断的大气和 bulk 参数进一步确认了该伴星的幼年和行星本质。HD 135344 Ab 是最年轻的直接成像行星之一，已完全形成并在太阳系规模轨道上运行。这是一个研究巨行星早期演化和大气的宝贵目标，暗示其可能在冰点附近形成。
引用
@article{arxiv.2507.06206,
title = {Direct imaging discovery of a young giant planet orbiting on Solar System scales},
author = {T. Stolker and M. Samland and L. B. F. M. Waters and M. E. van den Ancker and W. O. Balmer and S. Lacour and M. L. Sitko and J. J. Wang and M. Nowak and A. -L. Maire and J. Kammerer and G. P. P. L. Otten and R. Abuter and A. Amorim and M. Benisty and J. -P. Berger and H. Beust and S. Blunt and A. Boccaletti and M. Bonnefoy and H. Bonnet and M. S. Bordoni and G. Bourdarot and W. Brandner and F. Cantalloube and P. Caselli and B. Charnay and G. Chauvin and A. Chavez and A. Chomez and E. Choquet and V. Christiaens and Y. Clénet and V. Coudé du Foresto and A. Cridland and R. Davies and R. Dembet and J. Dexter and C. Dominik and A. Drescher and G. Duvert and A. Eckart and F. Eisenhauer and N. M. Förster Schreiber and P. Garcia and R. Garcia Lopez and T. Gardner and E. Gendron and R. Genzel and S. Gillessen and J. H. Girard and S. Grant and X. Haubois and G. Heißel and Th. Henning and S. Hinkley and S. Hippler and M. Houllé and Z. Hubert and L. Jocou and M. Keppler and P. Kervella and L. Kreidberg and N. T. Kurtovic and A. -M. Lagrange and V. Lapeyrère and J. -B. Le Bouquin and D. Lutz and F. Mang and G. -D. Marleau and A. Mérand and M. Min and P. Mollière and J. D. Monnier and C. Mordasini and D. Mouillet and E. Nasedkin and T. Ott and C. Paladini and T. Paumard and K. Perraut and G. Perrin and O. Pfuhl and N. Pourré and L. Pueyo and S. P. Quanz and D. C. Ribeiro and E. Rickman and Z. Rustamkulov and J. Shangguan and T. Shimizu and D. Sing and J. Stadler and O. Straub and C. Straubmeier and E. Sturm and L. J. Tacconi and E. F. van Dishoeck and A. Vigan and F. Vincent and S. D. von Fellenberg and F. Widmann and T. O. Winterhalder and J. Woillez and S. Yazici},
journal= {arXiv preprint arXiv:2507.06206},
year = {2025}
}
备注
13 pages, 11 figures, accepted for publication in A&A