NGTS 15b, 16b, 17b, and 18b: four hot Jupiters from the Next-Generation Transit Survey
NGTS 15b, 16b, 17b, and 18b: four hot Jupiters from the Next-Generation Transit Survey
复制标题
NGTS 15b、16b、17b 和 18b:来自下一代凌日巡天的四颗热木星
DOI:
10.1093/mnras/stab815
复制
发表时间:
2021
影响因子:
4.8
通讯作者:
Tilbrook R
中科院分区:
文献类型:
--
作者:
Tilbrook R
We report the discovery of four new hot Jupiters with the Next-Generation Transit Survey (NGTS). NGTS-15b, NGTS-16b, NGTS-17b, and NGTS-18b are short-period (P< 5 d) planets orbiting G-type main-sequence stars, with radii and masses between 1.10 and 1.30RJand 0.41 and 0.76MJ, respectively. By considering the host star luminosities and the planets’ small orbital separations (0.039–0.052 au), we find that all four hot Jupiters are highly irradiated and therefore occupy a region of parameter space in which planetary inflation mechanisms become effective. Comparison with statistical studies and a consideration of the planets’ high incident fluxes reveal that NGTS-16b, NGTS-17b, and NGTS-18b are indeed likely inflated, although some disparities arise upon analysis with current Bayesian inflationary models. However, the underlying relationships that govern radius inflation remain poorly understood. We postulate that the inclusion of additional hyperparameters to describe latent factors such as heavy element fraction, as well as the addition of an updated catalogue of hot Jupiters, would refine inflationary models, thus furthering our understanding of the physical processes that give rise to inflated planets.
登录
查看更多内容
DOI:
10.1088/0004-6256/144/5/139
发表时间:
2012
期刊:
The Astronomical Journal
影响因子:
--
作者:
J. Hartman;G. Bakos;B. B'eky;G. Torres;D. Latham;Z. Csubry;K. Penev;Avi Shporer;B. Fulton;L. Buchhave;J. Johnson;A. Howard;G. Marcy;D. Fischer;G. Kov'acs;R. Noyes;G. Esquerdo;M. Everett;T. Szklen'ar;S. Quinn;A. Bieryla;R. Knox;P. Hinz;D. Sasselov;G. FHur'esz;R. Stefanik;J. L'az'ar;I. Papp;P. S'ari
通讯作者:
P. S'ari
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
D. Evans
通讯作者:
D. Evans
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
D. Thorngren;J. Fortney;R. Murray;E. Lopez
通讯作者:
E. Lopez
DOI:
10.3847/0004-6256/152/6/182
发表时间:
2016
期刊:
The Astronomical Journal
影响因子:
--
作者:
J. Hartman;G. Bakos;W. Bhatti;K. Penev;A. Bieryla;D. Latham;G. Kov'acs;G. Torres;Z. Csubry;Miguel de Val;L. Buchhave;T. Kov'acs;S. Quinn;A. Howard;H. Isaacson;B. Fulton;M. Everett;G. Esquerdo;B. B'eky;T. Szklenár;E. Falco;A. Santerne;I. Boisse;G. H'ebrard;A. Burrows;J. L'az'ar;I. Papp;P. S'ari
通讯作者:
P. S'ari
DOI:
10.1088/2041-8205/729/1/l7
发表时间:
2011-01
期刊:
The Astrophysical Journal Letters
影响因子:
--
作者:
G. Laughlin;M. Crismani;F. Adams
通讯作者:
G. Laughlin;M. Crismani;F. Adams