TRANSIT TIMING TO FIRST ORDER IN ECCENTRICITY
نویسندگان
چکیده
منابع مشابه
Transit Timing to First Order in Eccentricity
Characterization of transiting planets with transit timing variations (TTVs) requires understanding how to translate the observed TTVs into masses and orbital elements of the planets. This can be challenging in multi-planet transiting systems, but fortunately these systems tend to be nearly planeparallel and low eccentricity. Here we present a novel derivation of analytic formulae for TTVs that...
متن کاملTransit Timing Variations for Planets near Eccentricity-type Mean Motion Resonances
We derive the transit timing variations (TTVs) of two planets near a second-order mean motion resonance (MMR) on nearly circular orbits. We show that the TTVs of each planet are given by sinusoids with a frequency of jn j n 2 2 1 ( ) , where j 3 is an integer characterizing the resonance and n2 and n1 are the mean motions of the outer and inner planets, respectively. The amplitude of the TTV ...
متن کاملTransit Timing Effects due to an Exomoon
As the number of known exoplanets continues to grow, the question as to whether such bodies harbour satellite systems has become one of increasing interest. In this paper, we explore the transit timing effects that should be detectable due to an exomoon and predict a new observable. We first consider transit time variation (TTV), where we update the model to include the effects of orbital eccen...
متن کاملTransit timing effects due to an exomoon II
In our previous paper, we evaluated the transit duration variation (TDV) effect for a co-aligned planet-moon system at an orbital inclination of i = 90◦. Here, we will consider the effect for the more general case of i 6 90◦ and an exomoon inclined from the planet-star plane by Euler rotation angles α, β and γ. We find that the TDV signal has two major components, one due to the velocity variat...
متن کاملUsing long-term transit timing to detect terrestrial planets
We propose that the presence of additional planets in extrasolar planetary systems can be detected by long-term transit timing studies. If a transiting planet is on an eccentric orbit then the presence of another planet causes a secular advance of the transiting planet’s pericenter over and above the effect of general relativity. Although this secular effect is impractical to detect over a smal...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2016
ISSN: 1538-4357
DOI: 10.3847/0004-637x/818/2/177