Investigating the planet-metallicity correlation for hot Jupiters

被引：0
作者：
Osborn A. [1 ,2 ]
Bayliss D. [1 ,2 ]
机构：
[1] Department of Physics, University of Warwick, Gibbet Hill Road, Coventry
[2] Centre for Exoplanets and Habitability, University of Warwick, Gibbet Hill Road, Coventry
来源：
Osborn, Ares (e.osborn@warwick.ac.uk) | 1600年 / Oxford University Press卷 / 491期
关键词：
Planetary systems; Stars: Abundances; Stars: Fundamental parameters;
D O I：
10.1093/MNRAS/STZ3207
中图分类号：
P144 [恒星物理学];
学科分类号：
摘要：
We investigate the giant planet-metallicity correlation for a homogeneous, unbiased set of 217 hot Jupiters taken from nearly 15 yr of wide-field ground-based surveys. We compare the host star metallicity to that of field stars using the Besançon Galaxy model, allowing for a metallicity measurement offset between the two sets. We find that hot Jupiters preferentially orbit metal-rich stars. However, we find the correlation consistent, though marginally weaker, for hot Jupiters (β = 0.71+0.56 -0.34) than it is for other longer period gas giant planets from radial velocity surveys. This suggests that the population of hot Jupiters probably formed in a similar process to other gas giant planets, and differ only in their migration histories. © 2020 Oxford University Press. All rights reserved.
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页码：4481 / 4487
页数：6
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