8 papers
The Persistent Missing Mass Problem in Planet Formation
Eve J. Lee, William DeRocco, Sam Hadden +1
Recent ground-based microlensing surveys suggest that our Galaxy may abound with small free floating planets, potentially up to 21 such planets per star. We explore the impli…
Rattle-and-Break: the Impact of Planetesimal Scattering on Super-Earth Resonant Chains
Sam Hadden, Yanqin Wu
The spacings of super-Earths in multi-transiting systems exhibit a distribution that is broad and mostly featureless, with the exception of notable excesses of planet pairs situate…
Canceling Effects of Conjunctions Render Higher Order Mean Motion Resonances Weak
Elizabeth K Jones, Samuel Hadden, Supakrai Teekamongkol +1
Mean motion resonances (MMRs) are a key phenomenon in orbital dynamics. The traditional disturbing function expansion in celestial mechanics shows that, at low eccentricities, :…
Free Floating or Merely Detached?
Sam Hadden, Yanqin Wu
Microlensing surveys suggest the presence of a surprisingly large population of free-floating planets, with a rate of about two Neptunes per star. The origin of such objects is not…
A Unified, Physical Framework for Mean Motion Resonances
Daniel Tamayo, Samuel Hadden
The traditional approach to analyzing mean motion resonances is through canonical perturbation theory. While this is a powerful method, its generality leads to complicated combinat…
Eccentricities of Close Stellar Binaries
Yanqin Wu, Sam Hadden, Janosz Dewberry +2
Orbits of stellar binaries are in general eccentric. These eccentricities encode information about their early lives. Here, we use thousands of main-sequence binaries from the Gaia…