Tidally Distorted, Iron-enhanced Exoplanets Closely Orbiting Their Stars
Tidally Distorted, Iron-enhanced Exoplanets Closely Orbiting Their Stars
复制标题
潮汐扭曲、铁增强系外行星紧密围绕其恒星运行
DOI：
10.3847/1538-4357/ab7c67
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
L. Rogers
中科院分区：
文献类型：
--
作者：
E. Price;L. Rogers
凌日候选行星KOI 1843.03（半径，4.245小时轨道周期，主恒星）是已知行星中轨道周期最短的。在这里，我们展示了，使用超短周期潮汐扭曲的岩石系外行星的第一个三维内部结构模拟，KOI 1843.03的形状可能像一个美式足球，沿着行星-恒星轴拉长，宽高比高达1.79。此外，KOI 1843.03在如此近的轨道上避免了潮汐分裂（行星被其主恒星的潮汐引力拉开），KOI 1843.03必须和水星一样富含铁（铁质量约66%，而水星为70%）。超短周期（Porb > 1天）的行星在物理上对其密度有意义的限制，到目前为止，只有不到一半（9个中的4个）是铁增强的。随着更多的发现，我们将更好地了解岩石行星组成的多样性以及导致行星铁增强的各种过程。
The transiting planet candidate KOI 1843.03 ( radius, 4.245 hr orbital period, host star) has the shortest orbital period of any known planet. Here we show, using the first three-dimensional interior structure simulations of ultra-short-period tidally distorted rocky exoplanets, that KOI 1843.03 may be shaped like an American football, elongated along the planet-star axis with an aspect ratio of up to 1.79. Furthermore, for KOI 1843.03 to have avoided tidal disruption (wherein the planet is pulled apart by the tidal gravity of its host star) on such a close-in orbit, KOI 1843.03 must be as iron-rich as Mercury (about 66% by mass iron compared to Mercury’s 70% by mass iron). Of the ultra-short-period (Porb ≲ 1 day) planets with physically meaningful constraints on their densities characterized to date, just under half (four out of nine) are iron-enhanced. As more are discovered, we will better understand the diversity of rocky planet compositions and the variety of processes that lead to planetary iron enhancement.
DOI：
10.1088/0004-637x/800/2/135
发表时间：
2014-12
期刊：
The Astrophysical Journal
影响因子：
--
作者：
C. Dressing;D. Charbonneau;X. Dumusque;S. Gettel;F. Pepe;A. Collier Cameron;D. Latham;E. Molinari;S. Udry;L. Affer;A. Bonomo;L. Buchhave;R. Cosentino;P. Figueira;A. Fiorenzano;A. Harutyunyan;R. Haywood;J. Johnson;M. López-Morales;C. Lovis;L. Malavolta;M. Mayor;G. Micela;F. Motalebi;V. Nascimbeni;D. Phillips;G. Piotto;D. Pollacco;D. Queloz;K. Rice;D. Sasselov;D. Ségransan;A. Sozzetti;A. Szentgyorgyi;C. Watson
通讯作者：
C. Dressing;D. Charbonneau;X. Dumusque;S. Gettel;F. Pepe;A. Collier Cameron;D. Latham;E. Molinari;S. Udry;L. Affer;A. Bonomo;L. Buchhave;R. Cosentino;P. Figueira;A. Fiorenzano;A. Harutyunyan;R. Haywood;J. Johnson;M. López-Morales;C. Lovis;L. Malavolta;M. Mayor;G. Micela;F. Motalebi;V. Nascimbeni;D. Phillips;G. Piotto;D. Pollacco;D. Queloz;K. Rice;D. Sasselov;D. Ségransan;A. Sozzetti;A. Szentgyorgyi;C. Watson
影响因子：
6.5
作者：
E. Guenther;O. Barragán;F. Dai;Davide Gandolfi;T. Hirano;M. Fridlund;M. Fridlund;M. Fridlund;L. Fossati;A. Chau;R. Helled;J. Korth;J. Prieto-Arranz;J. Prieto-Arranz;D. Nespral;D. Nespral;G. Antoniciello;H. Deeg;H. Deeg;M. Hjorth;S. Grziwa;S. Albrecht;A. Hatzes;H. Rauer;H. Rauer;S. Csizmadia;Alexis M. S. Smith;J. Cabrera;N. Narita;P. Arriagada;J. Burt;R. P. Butler;W. Cochran;J. Crane;P. Eigmueller;A. Erikson;J. Johnson;A. Kiilerich;D. Kubyshkina;E. Pallé;E. Pallé;C. M. Persson;M. Pätzold;S. Sabotta;B. Sato;S. Shectman;J. Teske;I. Thompson;V. V. Eylen-V.;G. Nowak;G. Nowak;A. Vanderburg;J. Winn;R. Wittenmyer
通讯作者：
E. Guenther;O. Barragán;F. Dai;Davide Gandolfi;T. Hirano;M. Fridlund;M. Fridlund;M. Fridlund;L. Fossati;A. Chau;R. Helled;J. Korth;J. Prieto-Arranz;J. Prieto-Arranz;D. Nespral;D. Nespral;G. Antoniciello;H. Deeg;H. Deeg;M. Hjorth;S. Grziwa;S. Albrecht;A. Hatzes;H. Rauer;H. Rauer;S. Csizmadia;Alexis M. S. Smith;J. Cabrera;N. Narita;P. Arriagada;J. Burt;R. P. Butler;W. Cochran;J. Crane;P. Eigmueller;A. Erikson;J. Johnson;A. Kiilerich;D. Kubyshkina;E. Pallé;E. Pallé;C. M. Persson;M. Pätzold;S. Sabotta;B. Sato;S. Shectman;J. Teske;I. Thompson;V. V. Eylen-V.;G. Nowak;G. Nowak;A. Vanderburg;J. Winn;R. Wittenmyer