Atmospheres and Climates of Exoplanets

系外行星的大气和气候

基本信息

  • 批准号:
    RGPIN-2014-03844
  • 负责人:
  • 金额:
    $ 3.28万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2016
  • 资助国家:
    加拿大
  • 起止时间:
    2016-01-01 至 2017-12-31
  • 项目状态:
    已结题

项目摘要

In recent years, the study of exoplanets has shifted from their detection to the characterization of their physical properties, in particular their atmospheres. The work on exoplanets proposed here consists of using some of the basic tools and principles of atmospheric science, originally developed for Earth, to deepen our understanding of the diversity of atmospheric behaviors expected on exoplanets and to clarify how those might shape astronomical observables. 1) Hot Exoplanets Hot Jupiters/Saturns/Neptunes form the best characterized class of exoplanets and the next generation of astronomical observatories and surveys, such as TESS, JWST and ECho, will yield a wealth of new data on these planets over the next decade. Recently, it became clear that new physics in the form of magnetic induction plays an important role in the weakly-ionized atmospheres of many such planets, when temperatures exceed about 1300 K, leading to magnetic drag on the atmospheric winds and ohmic dissipation at depth (which results in radius inflation for these planets). Using a combination of analytical considerations and numerical models, we will focus our research program for this class of exoplanets on three specific topics designed to further test and consolidate the magnetic induction scenario. We will clarify expected trends for magnetic drag and ohmic dissipation with planet temperature for the ensemble population of known planets, which should be manifest given the exponential dependence of atmospheric ionization with temperature. For specific, well characterized planets, we will also explore the interplay between several planetary observables which are directly impacted by magnetic induction, such as dragged winds vs. the degree of radius inflation. Finally, we will study the possible role of an MHD runaway convergence of electric currents on the hot dayside to locally increase heating in those regions, a process which could be at the origin of the thermal inversions observationally inferred on several hot Jupiters. 2) Habitable worlds around M-dwarfs Terrestrial exoplanets orbiting in the habitable zone of low-mass M-dwarf stars are the focus of astronomical searches because several biases favor their detection and characterization. They may thus offer the first targets for atmospheric characterization of nearby habitable worlds in the next decade. Studying the rich climate dynamics of such worlds is important, to guide observational efforts and to provide an interpretation of the data when it becomes available. The use of adapted climate models to evaluate surface conditions on such remote worlds with permanent day and night sides is our preferred approach, given the inherent complexity of the climate system. Our work uses an advanced, yet versatile, Earth-system climate simulator, with a full hydrological cycle, adjustable land/ocean fractions and diagnostic cloud prescriptions, to study the climates of habitable worlds around M-dwarfs. A focus of our work on this class of planets will be to understand their unusual hydrological cycle, with the likely trapping of the majority of their surface water in the form of nightside ice (water-trapped climate configuration). The amount of residual water left on the dayside of such planets will be an important factor determining the habitability of these worlds. More generally, our work will explore a variety of expected orbital configurations for such planets (spin rate, eccentricity, obliquity, asynchronism) and their consequences for the climate. Throughout this exploration, we will strive to quantify to what extent surface conditions and habitability can be inferred from the set of astronomical measurements that will be available to characterize such planets.
近年来,对系外行星的研究已经从探测它们转向表征它们的物理性质,特别是它们的大气层。这里提出的系外行星工作包括使用一些最初为地球开发的大气科学的基本工具和原理,以加深我们对系外行星上预期的大气行为多样性的理解,并阐明这些行为如何影响天文观测结果。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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Menou, Kristen其他文献

Evolution of the Radius Valley around Low-mass Stars from Kepler and K2
  • DOI:
    10.3847/1538-3881/ab8237
  • 发表时间:
    2020-05-01
  • 期刊:
  • 影响因子:
    5.3
  • 作者:
    Cloutier, Ryan;Menou, Kristen
  • 通讯作者:
    Menou, Kristen
WATER-TRAPPED WORLDS
  • DOI:
    10.1088/0004-637x/774/1/51
  • 发表时间:
    2013-09-01
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Menou, Kristen
  • 通讯作者:
    Menou, Kristen
THE POPULATION OF VISCOSITY- AND GRAVITATIONAL WAVE-DRIVEN SUPERMASSIVE BLACK HOLE BINARIES AMONG LUMINOUS ACTIVE GALACTIC NUCLEI
  • DOI:
    10.1088/0004-637x/700/2/1952
  • 发表时间:
    2009-08-01
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Haiman, Zoltan;Kocsis, Bence;Menou, Kristen
  • 通讯作者:
    Menou, Kristen
Atmospheric circulation of close-in extrasolar giant planets. I. Global, barotropic, adiabatic simulations
  • DOI:
    10.1086/524718
  • 发表时间:
    2008-03-01
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Cho, James Y-K.;Menou, Kristen;Seager, Sara
  • 通讯作者:
    Seager, Sara
No Snowball on Habitable Tidally Locked Planets
  • DOI:
    10.3847/1538-4357/aa80e1
  • 发表时间:
    2017-08-20
  • 期刊:
  • 影响因子:
    4.9
  • 作者:
    Checlair, Jade;Menou, Kristen;Abbot, Dorian S.
  • 通讯作者:
    Abbot, Dorian S.

Menou, Kristen的其他文献

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{{ truncateString('Menou, Kristen', 18)}}的其他基金

Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2022
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2021
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2020
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2019
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2018
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2017
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2015
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2014
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual

相似海外基金

Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2022
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
The role of land in the climates of tidally locked Earth-like exoplanets
陆地在潮汐锁定的类地系外行星气候中的作用
  • 批准号:
    559224-2021
  • 财政年份:
    2022
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Postgraduate Scholarships - Doctoral
The role of land in the climates of tidally locked Earth-like exoplanets
陆地在潮汐锁定的类地系外行星气候中的作用
  • 批准号:
    559224-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Postgraduate Scholarships - Doctoral
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2021
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2019-06517
  • 财政年份:
    2020
  • 资助金额:
    $ 3.28万
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    Discovery Grants Program - Individual
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系外行星的大气和气候
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    RGPIN-2019-06517
  • 财政年份:
    2019
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2018
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
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    RGPIN-2014-03844
  • 财政年份:
    2017
  • 资助金额:
    $ 3.28万
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    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2015
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
Atmospheres and Climates of Exoplanets
系外行星的大气和气候
  • 批准号:
    RGPIN-2014-03844
  • 财政年份:
    2014
  • 资助金额:
    $ 3.28万
  • 项目类别:
    Discovery Grants Program - Individual
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