Investigating the planet-metallicity correlation for hot Jupiters

被引：23

作者：

Osborn, Ares ^{[1
,2
]}

Bayliss, Daniel ^{[1
,2
]}

机构：

[1] Univ Warwick, Dept Phys, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England

[2] Univ Warwick, Ctr Exoplanets & Habitabil, Gibbet Hill Rd, Coventry CV4 7AL, W Midlands, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 491卷 / 03期

基金：

美国国家航空航天局;

关键词：

stars: abundances; stars: fundamental parameters; planetary systems; STATISTICAL PROPERTIES; STELLAR METALLICITY; DETERMINISTIC MODEL; GIANT PLANETS; STARS; MASS; EXOPLANETS; SEARCH; DISC; KECK;

D O I：

10.1093/mnras/stz3207

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

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 Besancon 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 (beta = 0.71(-0.34)(+0.56)) 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.

引用

页码：4481 / 4487

页数：7

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