A population of planetary systems characterized by short-period, earth-sized planets

Document Type

Conference Proceeding

Publication Date

1-1-2016

Publication Title

Proceedings of the National Academy of Sciences of the United States of America

Publisher

National Academy of Sciences

Volume

113

Issue

43

First page number:

12023

Last page number:

12028

Abstract

We analyze data from the Quarter 1.17 Data Release 24 (Q1.Q17 DR24) planet candidate catalog from NASA's Kepler mission, specifically comparing systems with single transiting planets to systems with multiple transiting planets, and identify a population of exoplanets with a necessarily distinct system architecture. Such an architecture likely indicates a different branch in their evolutionary past relative to the typical Kepler system. The key feature of these planetary systems is an isolated, Earth-sized planet with a roughly 1-d orbital period. We estimate that at least 24 of the 144 systems we examined (≳17%) are members of this population. Accounting for detection efficiency, such planetary systems occur with a frequency similar to the hot Jupiters.

Keywords

Exoplanets; Kepler; Planetary systems

Language

English

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