Exoplanet mass estimation for a sample of targets for the Ariel mission
Exoplanet mass estimation for a sample of targets for the Ariel mission
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Ariel 任务目标样本的系外行星质量估计
DOI:
10.1007/s10686-021-09758-0
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发表时间:
2021
影响因子:
3
通讯作者:
Barnes J
中科院分区:
文献类型:
--
作者:
Barnes J
Ariel’s ambitious goal to survey a quarter of known exoplanets will transform our knowledge of planetary atmospheres. Masses measured directly with the radial velocity technique are essential for well determined planetary bulk properties. Radial velocity masses will provide important checks of masses derived from atmospheric fits or alternatively can be treated as a fixed input parameter to reduce possible degeneracies in atmospheric retrievals. We quantify the impact of stellar activity on planet mass recovery for theArielmission sample using Sun-like spot models scaled for active stars combined with other noise sources. Planets with necessarily well-determined ephemerides will be selected for characterisation withAriel. With this prior requirement,we simulate the derived planet mass precision as a function of the number of observations for a prospective sample ofArieltargets. We find that quadrature sampling can significantly reduce the time commitment required for follow-up RVs, and is most effective when the planetary RV signature is larger than the RV noise. For a typical radial velocity instrument operating on a 4 m class telescope and achieving 1 m s−1precision, between ~17% and ~ 37% of the time commitment is spent on the 7% of planets with massMp< 10 M⊕. In many low activity cases, the time required is limited by asteroseismic and photon noise. For low mass or faint systems, we can recover masses with the same precision up to ~3 times more quickly with an instrumental precision of ~10 cm s−1.
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影响因子:
14.1
作者:
Staab D
通讯作者:
Staab D
DOI:
10.3847/1538-3881/ab1cb9
发表时间:
2019
期刊:
The Astronomical Journal
影响因子:
--
作者:
B. Edwards;L. Mugnai;G. Tinetti;E. Pascale;Subhajit Sarkar
通讯作者:
Subhajit Sarkar
影响因子:
6.5
作者:
P. Figueira;N. Santos;F. Pepe;C. Lovis;N. Nardetto
通讯作者:
N. Nardetto
影响因子:
6.5
作者:
M. Desort;A. Lagrange;F. Galland;S. Udry;M. Mayor
通讯作者:
M. Desort;A. Lagrange;F. Galland;S. Udry;M. Mayor
影响因子:
7.9
作者:
Batalha, Natasha E.;Lewis, Taylor;Line, Michael R.
通讯作者:
Line, Michael R.