Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS: resolving the retired A-star mass controversy
Asteroseismic masses of four evolved planet-hosting stars using SONG and TESS: resolving the retired A-star mass controversy
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使用 SONG 和 TESS 计算四颗演化的行星恒星的星震质量：解决退役 A 星质量争议
DOI：
10.1093/mnras/staa1793
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发表时间：
2020
影响因子：
4.8
通讯作者：
Palle, Pere L
中科院分区：
文献类型：
--
作者：
Malla, Sai Prathyusha;Stello, Dennis;Huber, Daniel;Montet, Benjamin T;Bedding, Timothy R;Fredslund Andersen, Mads;Grundahl, Frank;Jessen-Hansen, Jens;Hey, Daniel R;Palle, Pere L
研究行星的出现与恒星质量的关系对于更好地理解行星的形成是很重要的。估计恒星质量，特别是在红巨星区，是困难的。特别是，在过去十年中，基于光谱学和网格模型的演化行星宿主恒星样本的恒星质量受到质疑，声称它们被高估了。虽然过去曾努力利用星震学来调和这一争议，但结果并不确定。为了解决这一争议，我们在本文中使用asteroseismology研究了四个更进化的行星宿主恒星，我们回顾了以前的结果，以自洽的方式对整个系综进行了知情的研究。对于这四颗新恒星，我们通过从SONG观测到的径向速度时间序列中定位它们的特征振荡频率νmax来测量它们的质量。对于两颗恒星，我们也能够测量大的频率间隔Δν，这得益于扩展的SONG单站点和双站点观测以及新的凌日系外行星调查卫星观测。我们通过从Δν以及从Δν和νmax确定恒星质量来建立仅基于ν max的结果的鲁棒性。然后，我们比较地震质量的完整合奏的16颗恒星的光谱质量从三个不同的文献来源。我们发现地震和光谱质量尺度之间的偏移量是质量依赖的，这表明先前声称的光谱质量的高估只影响恒星质量超过约1.6兆焦耳。
The study of planet occurrence as a function of stellar mass is important for a better understanding of planet formation. Estimating stellar mass, especially in the red giant regime, is difficult. In particular, stellar masses of a sample of evolved planet-hosting stars based on spectroscopy and grid-based modelling have been put to question over the past decade with claims they were overestimated. Although efforts have been made in the past to reconcile this dispute using asteroseismology, results were inconclusive. In an attempt to resolve this controversy, we study four more evolved planet-hosting stars in this paper using asteroseismology, and we revisit previous results to make an informed study of the whole ensemble in a self-consistent way. For the four new stars, we measure their masses by locating their characteristic oscillation frequency, νmax, from their radial velocity time series observed by SONG. For two stars, we are also able to measure the large frequency separation, Δν, helped by extended SONG single-site and dual-site observations and newTransiting Exoplanet Survey Satelliteobservations. We establish the robustness of the νmax-only-based results by determining the stellar mass from Δν, and from both Δν and νmax. We then compare the seismic masses of the full ensemble of 16 stars with the spectroscopic masses from three different literature sources. We find an offset between the seismic and spectroscopic mass scales that is mass dependent, suggesting that the previously claimed overestimation of spectroscopic masses only affects stars more massive than about 1.6 M⊙.
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影响因子：
4.8
作者：
T. White;T. White;T. White;D. Huber;A. Mann;A. Mann;L. Casagrande;S. Grunblatt;A. B. Justesen;V. S. Aguirre;T. Bedding;T. Bedding;M. Ireland;G. Schaefer;P. Tuthill
通讯作者：
T. White;T. White;T. White;D. Huber;A. Mann;A. Mann;L. Casagrande;S. Grunblatt;A. B. Justesen;V. S. Aguirre;T. Bedding;T. Bedding;M. Ireland;G. Schaefer;P. Tuthill
DOI：
10.3847/1538-4357/ab1f66
发表时间：
2018-05
期刊：
The Astrophysical Journal
影响因子：
--
作者：
J. Zinn;M. Pinsonneault;D. Huber;D. Stello
通讯作者：
J. Zinn;M. Pinsonneault;D. Huber;D. Stello
重访退役 A 恒星：更新后的巨行星出现率与恒星金属丰度和质量的函数关系
影响因子：
4.9
作者：
L. Ghezzi;B. Montet;J. Johnson
通讯作者：
J. Johnson
影响因子：
6.5
作者：
T. Arentoft;F. Grundahl;T. White;D. Slumstrup;R. Handberg;M. Lund;K. Brogaard;M. F. Andersen
通讯作者：
T. Arentoft;F. Grundahl;T. White;D. Slumstrup;R. Handberg;M. Lund;K. Brogaard;M. F. Andersen
用星震学衡量退役 A 星的质量：系外行星主星 HD 212771 的 K2 观测
DOI：
--
发表时间：
2017
期刊：
影响因子：
--
作者：
T. Campante;D. Veras;Thomas S. H. North;A. Miglio;T. Morel;J. Johnson;W. Chaplin;G. Davies;D. Huber;J. Kuszlewicz;M. Lund;B. Cooke;Y. Elsworth;T. Rodrigues;A. Vanderburg
通讯作者：
A. Vanderburg