Document Type
Article
Publication Date
3-18-2019
Publication Title
Astronomical Journal
Publisher
American Astronomical Society
Volume
157
Issue
4
First page number:
1
Last page number:
16
Abstract
Understanding the relationship between long-period giant planets and multiple smaller short-period planets is critical for formulating a complete picture of planet formation. This work characterizes three such systems. We present Kepler-65, a system with an eccentric (e = 0.28 ± 0.07) giant planet companion discovered via radial velocities (RVs) exterior to a compact, multiply transiting system of sub-Neptune planets. We also use precision RVs to improve mass and radius constraints on two other systems with similar architectures, Kepler-25 and Kepler-68. In Kepler-68 we propose a second exterior giant planet candidate. Finally, we consider the implications of these systems for planet formation models, particularly that the moderate eccentricity in Kepler-65's exterior giant planet did not disrupt its inner system.
Keywords
Planetary systems
Disciplines
Stars, Interstellar Medium and the Galaxy
File Format
File Size
182 KB
Language
English
Repository Citation
Mills, S. M.,
Howard, A. W.,
Weiss, L. M.,
Steffen, J. H.,
Isaacson, H.,
Fulton, B.,
Petigura, E. A.,
Kosiarek, M. R.,
Hirsch, L. A.,
Boisvert, J. H.
(2019).
Long-Period Giant Companions to Three Compact, Multiplanet Systems.
Astronomical Journal, 157(4),
1-16.
American Astronomical Society.
http://dx.doi.org/10.3847/1538-3881/ab0899