干旱区生态环境知识资源中心(Arid): Demographics of Exoplanets in Binaries. I. Architecture of S-type Planetary Systems Revealed by the Radial-velocity Sample

Arid

DOI	10.3847/1538-3881/ac2ba3
	Demographics of Exoplanets in Binaries. I. Architecture of S-type Planetary Systems Revealed by the Radial-velocity Sample
	Su, Xiang-Ning; Xie, Ji-Wei; Zhou, Ji-Lin; Thebault, Philippe
通讯作者	Xie, JW (corresponding author), Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China. ; Xie, JW (corresponding author), Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China.
来源期刊	ASTRONOMICAL JOURNAL
ISSN	0004-6256
EISSN	1538-3881
出版年	2021
卷号	162 期号:6
英文摘要	Although the sample of exoplanets in binaries has been greatly expanded, the sample heterogeneity and observational bias are obstacles toward a clear figure of exoplanet demographics in the binary environment. To overcome the obstacles, we conduct a statistical study that focuses on S-type (circumstellar) planetary systems detected by the radial-velocity (RV) method. We try to account for observational biases by estimating, from available RV data, planet detection efficiencies for each individual system. Our main results are as follows. (1) Single (resp. multiple) planetary systems are mostly found in close (wide) binaries with separation a ( B ) (>) over bar) similar to 100-300 au. (2) In binaries, single and multiple-planet systems are similar in 1D distributions of mass and period as well as eccentricity (in contrast to the eccentricity dichotomy found in single star systems) but different in the 2D period-mass diagram. Specifically, there is a rectangular-shaped gap in the period-mass diagram of single-planet systems but not for multiples. This gap also depends on binary separation and is more prominent in close binaries. (3) There is a rising upper envelope in the period-mass diagram for planets in wide binaries as well as in single stars but not in close binaries. More specifically, there is a population of massive short-period planets in close binaries but almost absent in wide binaries or single stars. We suggest that enhanced planetary migration, collision and/or ejection in close binaries could be the potential underlying explanation for these three features.
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000723859800001
WOS关键词	MULTIPLICITY ; MASS ; PERTURBATIONS ; DISTRIBUTIONS ; FREQUENCY ; COMPANION ; DESERT
WOS类目	Astronomy & Astrophysics
WOS研究方向	Astronomy & Astrophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374052
作者单位	[Su, Xiang-Ning; Xie, Ji-Wei; Zhou, Ji-Lin] Nanjing Univ, Sch Astron & Space Sci, Nanjing 210023, Peoples R China; [Su, Xiang-Ning; Xie, Ji-Wei; Zhou, Ji-Lin] Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China; [Thebault, Philippe] Observ Paris, LESIA, Meudon, France
推荐引用方式 GB/T 7714	Su, Xiang-Ning,Xie, Ji-Wei,Zhou, Ji-Lin,et al. Demographics of Exoplanets in Binaries. I. Architecture of S-type Planetary Systems Revealed by the Radial-velocity Sample[J],2021,162(6).
APA	Su, Xiang-Ning,Xie, Ji-Wei,Zhou, Ji-Lin,&Thebault, Philippe.(2021).Demographics of Exoplanets in Binaries. I. Architecture of S-type Planetary Systems Revealed by the Radial-velocity Sample.ASTRONOMICAL JOURNAL,162(6).
MLA	Su, Xiang-Ning,et al."Demographics of Exoplanets in Binaries. I. Architecture of S-type Planetary Systems Revealed by the Radial-velocity Sample".ASTRONOMICAL JOURNAL 162.6(2021).