直接确认径向速度行星$\beta$ Pic c
地球与行星天体物理
2020-10-12 v1 天体物理仪器与方法
摘要
用于探测巨行星的方法可大致分为两类：间接与直接。间接方法对轨道周期小的行星更敏感，而直接探测对绕宿主恒星远距离（因而轨道周期长）运行的行星更敏感。这种二分法使得难以同时在单一目标上结合两种技术。直接技术与间接技术的同时测量提供了确定行星质量与光度的可能性，以及一种检验形成模型的方法。在此，我们旨在展示由径向速度引导的长基线干涉观测如何以这种方式使用。我们用安装在甚大望远镜干涉仪（VLTI）上的GRAVITY观测了最近发现的巨行星 Pictoris c。本研究构成了对通过径向速度发现的行星的首次直接确认。我们发现该行星温度为\,K，动力学质量为。在\,Myr时，这将 Pic c置于接近“热启动”轨道，通常与盘不稳定性形成相关。相反，该行星轨道距离为2.7\,au，对盘不稳定性发生而言过近。低视星等（）支持核吸积情景。我们建议这一明显矛盾是热核吸积的标志，例如，由于行星核的质量或形成期间存在高温吸积激波。
引用
@article{arxiv.2010.04442,
title = {Direct confirmation of the radial-velocity planet $\beta$ Pic c},
author = {M. Nowak and S. Lacour and A. -M. Lagrange and P. Rubini and J. Wang and T. Stolker and A. Amorim and R. Asensio-Torres and M. Bauböck and M. Benisty and J. P. Berger and H. Beust and S. Blunt and A. Boccaletti and M. Bonnefoy and H. Bonnet and W. Brandner and F. Cantalloube and B. Charnay and E. Choquet and V. Christiaens and Y. Clénet and V. Coudé du Foresto and A. Cridland and P. T. de Zeeuw and R. Dembet and J. Dexter and A. Drescher and G. Duvert and A. Eckart and F. Eisenhauer and F. Gao and P. Garcia and R. Garcia Lopez and T. Gardner and E. Gendron and R. Genzel and S. Gillessen and J. Girard and X. Haubois and G. Heißel and T. Henning and S. Hinkley and S. Hippler and M. Horrobin and M. Houllé and Z. Hubert and A. Jiménez-Rosales and L. Jocou and J. Kammerer and P. Kervella and M. Keppler and L. Kreidberg and M. Kulikauskas and V. Lapeyrère and J. -B. Le Bouquin and P. Léna and A. Mérand and A. -L. Maire and P. Mollière and J. D. Monnier and D. Mouillet and A. Müller and E. Nasedkin and T. Ott and G. Otten and T. Paumard and C. Paladini and K. Perraut and G. Perrin and L. Pueyo and O. Pfuhl and J. Rameau and L. Rodet and G. Rodríguez-Coira and G. Rousset and S. Scheithauer and J. Shangguan 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 K. Ward-Duong and F. Widmann and E. Wieprecht and E. Wiezorrek and J. Woillez and the GRAVITY Collaboration},
journal= {arXiv preprint arXiv:2010.04442},
year = {2020}
}
备注
10 pages