Predicting the frequencies of diverse exo-planetary systems

J. S. Greaves; D. A. Fischer; M. C. Wyatt; C. A. Beichman; G. Bryden

doi:10.1111/j.1745-3933.2007.00315.x

Predicting the frequencies of diverse exo-planetary systems

J. S. Greaves, D. A. Fischer, M. C. Wyatt, C. A. Beichman, G. Bryden

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Extrasolar planetary systems range from hot Jupiters out to icy comet belts more distant than Pluto. We explain this diversity in a model where the mass of solids in the primordial circumstellar disc dictates the outcome. The star retains measures of the initial heavy-element (metal) abundance that can be used to map solid masses on to outcomes, and the frequencies of all classes are correctly predicted. The differing dependences on metallicity for forming massive planets and low-mass cometary bodies are also explained. By extrapolation, around two-thirds of stars have enough solids to form Earth-like planets, and a high rate is supported by the first detections of low-mass exo-planets.

Original language	English
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	378
DOIs	https://doi.org/10.1111/j.1745-3933.2007.00315.x
Publication status	Published - 11 Jun 2007

Keywords

circumstellar matter
planetary systems : formation
planetary systems : protoplanetary discs
MAIN-SEQUENCE STARS
T-TAURI STARS
EXTRASOLAR PLANETS
GIANT PLANETS
DEBRIS DISCS
KUIPER-BELT
HOST STARS
METALLICITY
JUPITER
SEARCH

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10.1111/j.1745-3933.2007.00315.x

Cite this

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title = "Predicting the frequencies of diverse exo-planetary systems",

abstract = "Extrasolar planetary systems range from hot Jupiters out to icy comet belts more distant than Pluto. We explain this diversity in a model where the mass of solids in the primordial circumstellar disc dictates the outcome. The star retains measures of the initial heavy-element (metal) abundance that can be used to map solid masses on to outcomes, and the frequencies of all classes are correctly predicted. The differing dependences on metallicity for forming massive planets and low-mass cometary bodies are also explained. By extrapolation, around two-thirds of stars have enough solids to form Earth-like planets, and a high rate is supported by the first detections of low-mass exo-planets.",

keywords = "circumstellar matter, planetary systems : formation, planetary systems : protoplanetary discs, MAIN-SEQUENCE STARS, T-TAURI STARS, EXTRASOLAR PLANETS, GIANT PLANETS, DEBRIS DISCS, KUIPER-BELT, HOST STARS, METALLICITY, JUPITER, SEARCH",

author = "Greaves, {J. S.} and Fischer, {D. A.} and Wyatt, {M. C.} and Beichman, {C. A.} and G. Bryden",

year = "2007",

month = jun,

day = "11",

doi = "10.1111/j.1745-3933.2007.00315.x",

language = "English",

volume = "378",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

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TY - JOUR

T1 - Predicting the frequencies of diverse exo-planetary systems

AU - Greaves, J. S.

AU - Fischer, D. A.

AU - Wyatt, M. C.

AU - Beichman, C. A.

AU - Bryden, G.

PY - 2007/6/11

Y1 - 2007/6/11

N2 - Extrasolar planetary systems range from hot Jupiters out to icy comet belts more distant than Pluto. We explain this diversity in a model where the mass of solids in the primordial circumstellar disc dictates the outcome. The star retains measures of the initial heavy-element (metal) abundance that can be used to map solid masses on to outcomes, and the frequencies of all classes are correctly predicted. The differing dependences on metallicity for forming massive planets and low-mass cometary bodies are also explained. By extrapolation, around two-thirds of stars have enough solids to form Earth-like planets, and a high rate is supported by the first detections of low-mass exo-planets.

AB - Extrasolar planetary systems range from hot Jupiters out to icy comet belts more distant than Pluto. We explain this diversity in a model where the mass of solids in the primordial circumstellar disc dictates the outcome. The star retains measures of the initial heavy-element (metal) abundance that can be used to map solid masses on to outcomes, and the frequencies of all classes are correctly predicted. The differing dependences on metallicity for forming massive planets and low-mass cometary bodies are also explained. By extrapolation, around two-thirds of stars have enough solids to form Earth-like planets, and a high rate is supported by the first detections of low-mass exo-planets.

KW - circumstellar matter

KW - planetary systems : formation

KW - planetary systems : protoplanetary discs

KW - MAIN-SEQUENCE STARS

KW - T-TAURI STARS

KW - EXTRASOLAR PLANETS

KW - GIANT PLANETS

KW - DEBRIS DISCS

KW - KUIPER-BELT

KW - HOST STARS

KW - METALLICITY

KW - JUPITER

KW - SEARCH

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U2 - 10.1111/j.1745-3933.2007.00315.x

DO - 10.1111/j.1745-3933.2007.00315.x

M3 - Article

SN - 0035-8711

VL - 378

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

Predicting the frequencies of diverse exo-planetary systems

Abstract

Keywords

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Astrophysics at St Andrews: Astrophysics at St.Andrews

Research Fellowship - PP/C001524/1: How common is the Earth?

Cite this

Predicting the frequencies of diverse exo-planetary systems

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Projects

Astrophysics at St Andrews: Astrophysics at St.Andrews

Research Fellowship - PP/C001524/1: How common is the Earth?

Cite this