Search for Nearby Earth Analogs. I. 15 Planet Candidates Found in PFS Data

被引：24

作者：

Feng, Fabo ^{[1
]}

Crane, Jeffrey D. ^{[2
]}

Wang, Sharon Xuesong ^{[1
]}

Teske, Johanna K. ^{[1
,2
]}

Shectman, Stephen A. ^{[2
]}

Diaz, Matias R. ^{[2
,3
]}

Thompson, Ian B. ^{[2
]}

Jones, Hugh R. A. ^{[4
]}

Butler, R. Paul ^{[1
]}

机构：

[1] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA

[2] Observ Carnegie Inst Sci, 813 Santa Barbara St, Pasadena, CA 91101 USA

[3] Univ Chile, Dept Astron, Camino El Observ 1515, Santiago, Chile

[4] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2019年 / 242卷 / 02期

关键词：

instrumentation: spectrographs; methods: numerical; planets and satellites: general; stars: activity; techniques: radial velocities; PRECISION; SIGNALS;

D O I：

10.3847/1538-4365/ab1b16

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The radial velocity (RV) method plays a major role in the discovery of nearby exoplanets. To efficiently find planet candidates from the data obtained in high-precision RV surveys, we apply a signal diagnostic framework to detect RV signals that are statistically significant, consistent in time, robust in the choice of noise models, and do not correlated with stellar activity. Based on the application of this approach to the survey data of the Planet Finder Spectrograph, we report 15 planet candidates located in 14 stellar systems. We find that the orbits of the planet candidates around HD 210193, 103949, 8326, and 71135 are consistent with temperate zones around these stars (where liquid water could exist on the surface). With periods of 7.76 and 15.14 days, respectively, the planet candidates around star HIP 54373 form a 1:2 resonance system. These discoveries demonstrate the feasibility of automated detection of exoplanets from large RV surveys, which may provide a complete sample of nearby Earth analogs.

引用

页数：31

共 12 条

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Els, S
ASTRONOMY & ASTROPHYSICS, 2000, 362 (02) : 585 - 594
[12] Search for correlations between the optical and radio polarization of active galactic nuclei - I. VLBA polarization data at 15+22+43GHz
Algaba, J. C.
Gabuzda, D. C.
Smith, P. S.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 411 (01) : 85 - 101

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