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25 April 2024 |
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The Planetary System to KIC 11442793: A Compact Analogue to the Solar System | | J. Cabrera
; Sz. Csizmadia
; H. Lehmann
; R. Dvorak
; D. Gandolfi
; H. Rauer
; A. Erikson
; C. Dreyer
; Ph. Eigmueller
; A. Hatzes
; | | Date: |
23 Oct 2013 | | Abstract: | We announce the discovery of 7 transiting planets around a Kepler target, a
current record for transiting systems. Planets b, c, e and f are reported for
the first time in this work. Planets d, g and h were previously reported in the
literature (Batalha et al. 2013), although here we revise their orbital
parameters and confirm their planetary nature. Planets h and g are gas giants
and show strong dynamical interactions. The orbit of planet g is perturbed in
such way that its orbital period changes by 25.7h between two consecutive
transits during the length of the observations, which is the largest such
perturbation found so far. The rest of the planets also show mutual
interactions: planets d, e and f are super-Earths close to a mean motion
resonance chain (2:3:4), and planets b and c, with sizes below 2 Earth radii,
are within 0.5% of the 4:5 mean motion resonance. This complex system presents
some similarities to our Solar System, with small planets in inner orbits and
gas giants in outer orbits. It is, however, more compact. The outer planet has
an orbital distance around 1 AU, and the relative position of the gas giants is
opposite to that of Jupiter and Saturn, which is closer to the expected result
of planet formation theories. The dynamical interactions between planets are
also much richer. | | Source: | arXiv, 1310.6248 | | Services: | Forum | Review | PDF | Favorites | |
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