Search Results - "Kratter, Kaitlin"
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The Close Binary Fraction of Solar-type Stars Is Strongly Anticorrelated with Metallicity
Published in The Astrophysical journal (10-04-2019)“…There is now strong evidence that the close binary fraction (P < 104 days; a < 10 au) of solar-type stars (M1 0.6-1.5 ) decreases significantly with…”
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Gravitational Instabilities in Circumstellar Disks
Published in Annual review of astronomy and astrophysics (19-09-2016)“…Star and planet formation are the complex outcomes of gravitational collapse and angular momentum transport mediated by protostellar and protoplanetary disks…”
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3
Dynamical Formation of Close Binaries during the Pre-main-sequence Phase
Published in The Astrophysical journal (10-02-2018)“…Solar-type binaries with short orbital periods ( days; a 0.1 au) cannot form directly via fragmentation of molecular clouds or protostellar disks, yet their…”
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Impact of binary stars on planet statistics – I. Planet occurrence rates and trends with stellar mass
Published in Monthly notices of the Royal Astronomical Society (01-11-2021)“…ABSTRACT Close binaries suppress the formation of circumstellar (S-type) planets and therefore significantly bias the inferred planet occurrence rates and…”
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On the Mass Function, Multiplicity, and Origins of Wide-orbit Giant Planets
Published in The Astrophysical journal (20-05-2019)“…A major outstanding question regarding the formation of planetary systems is whether wide-orbit giant planets form differently than close-in giant planets. We…”
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Slowly-growing gap-opening planets trigger weaker vortices
Published in Monthly notices of the Royal Astronomical Society (21-04-2017)“…Abstract The presence of a giant planet in a low-viscosity disc can create a gap edge in the disc's radial density profile sharp enough to excite the Rossby…”
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Which planets trigger longer lived vortices: low-mass or high-mass?
Published in Monthly notices of the Royal Astronomical Society (01-07-2021)“…ABSTRACT Recent ALMA observations have found many protoplanetary discs with rings that can be explained by gap-opening planets less massive than Jupiter…”
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The Fragmentation Criteria in Local Vertically Stratified Self-gravitating Disk Simulations
Published in The Astrophysical journal (10-10-2017)“…Massive circumstellar disks are prone to gravitational instabilities, which trigger the formation of spiral arms that can fragment into bound clumps under the…”
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THE TRIPLE EVOLUTION DYNAMICAL INSTABILITY: STELLAR COLLISIONS IN THE FIELD AND THE FORMATION OF EXOTIC BINARIES
Published in The Astrophysical journal (01-12-2012)“…Physical collisions and close approaches between stars play an important role in the formation of exotic stellar systems. Standard theories suggest that…”
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10
Instabilities in multiplanet circumbinary systems
Published in Monthly notices of the Royal Astronomical Society (11-08-2019)“…ABSTRACT The majority of the discovered transiting circumbinary planets are located very near the innermost stable orbits permitted, raising questions about…”
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11
Planet scattering around binaries: ejections, not collisions
Published in Monthly notices of the Royal Astronomical Society (11-09-2016)“…Transiting circumbinary planets discovered by Kepler provide unique insight into binary star and planet formation. Several features of this new found…”
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Observational diagnostics of elongated planet-induced vortices with realistic planet formation time-scales
Published in Monthly notices of the Royal Astronomical Society (21-01-2019)Get full text
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13
Spin–Orbit Alignment of Early-type Astrometric Binaries and the Origin of Slow Rotators
Published in The Astrophysical journal (01-11-2024)“…Abstract The spin–orbit alignment of binary stars traces their formation and accretion history. Previous studies of spin–orbit alignment have been limited to…”
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14
The Formation and Evolution of Wide-orbit Stellar Multiples In Magnetized Clouds
Published in The Astrophysical journal (20-12-2019)“…Stars rarely form in isolation. Nearly half of the stars in the Milky Way have a companion, and this fraction increases in star-forming regions. However, why…”
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15
ON THE GRAVITATIONAL STABILITY OF GRAVITO-TURBULENT ACCRETION DISKS
Published in The Astrophysical journal (20-06-2016)“…ABSTRACT Low mass, self-gravitating accretion disks admit quasi-steady, "gravito-turbulent" states in which cooling balances turbulent viscous heating…”
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16
The 3D Dust and Opacity Distribution of Protoplanets in Multifluid Global Simulations
Published in The Astrophysical journal (01-04-2022)“…Abstract The abundance and distribution of solids inside the Hill sphere are central to our understanding of the giant planet dichotomy. Here, we present a 3D…”
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The Runts of the Litter: Why Planets Formed Through Gravitational Instability Can Only Be Failed Binary Stars
Published in The Astrophysical journal (20-02-2010)“…Recent direct imaging discoveries suggest a new class of massive, distant planets around A stars. These widely separated giants have been interpreted as signs…”
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Circumbinary Accretion from Finite and Infinite Disks
Published in The Astrophysical journal (01-02-2020)“…We carry out 2D viscous hydrodynamics simulations of circumbinary disk (CBD) accretion using AREPO. We resolve the accretion flow from a large-scale CBD down…”
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A Fast Second-order Solver for Stiff Multifluid Dust and Gas Hydrodynamics
Published in The Astrophysical journal. Supplement series (01-03-2024)“…Abstract We present MDIRK: a multifluid second-order diagonally implicit Runge–Kutta method to study momentum transfer between gas and an arbitrary number ( N…”
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Morphology of Hydrodynamic Winds: A Study of Planetary Winds in Stellar Environments
Published in The Astrophysical journal (01-03-2019)“…Bathed in intense ionizing radiation, close-in gaseous planets undergo hydrodynamic atmospheric escape, which ejects the upper extent of their atmospheres into…”
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