Doppler cross-correlation spectroscopy as a path to the detection of Earth-like planets

IF 1.3 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Comptes Rendus Physique Pub Date : 2023-06-08 DOI:10.5802/crphys.153

M. Mayor

引用次数: 1

Abstract

. In the middle of the 20th century, a paradigm shift appeared concerning the expected frequency of planetary systems in the galaxy...a shift induced by the observation of the rotational velocities of low main sequence stars (Struve 1952)! Atthesametime,Fellgett(1955)proposedtoconcentratethedilutedDopplerinformationonseveraltens of thousands of absorption lines to allow the precise measurement of stellar velocities. This idea improved the e ffi ciency of radial velocity measurements by a factor of over 1000. Gradually the accuracy of the new generation of spectrographs using cross-correlation is improved from 300 m/s to 0.1 m/s....An idea that will contribute in an important way to the discovery of 51 Pegasi b and several hundreds of planetary systems. Will visible or infrared cross-correlation spectrographs today be able to detect rocky planets in the habitable zone associated with their host star?

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多普勒互相关光谱作为探测类地行星的途径

在20世纪中期，关于银河系行星系统的预期频率出现了范式转变。。。由观测低主序星的旋转速度引起的偏移（Struve 1952）！同时，Fellgett（1955）提出将稀释的Dopplerinformation浓缩在数万条吸收线上，以便精确测量恒星速度。这一想法将径向速度测量的效率提高了1000倍以上。使用互相关的新一代光谱仪的精度逐渐从300m/s提高到0.1m/s。。。。这一想法将对发现51个Pegasi b和数百个行星系统做出重要贡献。今天的可见光或红外互相关光谱仪能够探测到与其宿主恒星相关的宜居带内的岩石行星吗？

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Comptes Rendus Physique 物理-天文与天体物理

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

17.2 weeks

期刊介绍： The Comptes Rendus - Physique are an open acess and peer-reviewed electronic scientific journal publishing original research article. It is one of seven journals published by the Académie des sciences. Its objective is to enable researchers to quickly share their work with the international scientific community. The Comptes Rendus - Physique also publish journal articles, thematic issues and articles on the history of the Académie des sciences and its current scientific activity. From 2020 onwards, the journal''s policy is based on a diamond open access model: no fees are charged to authors to publish or to readers to access articles. Thus, articles are accessible immediately, free of charge and permanently after publication. The Comptes Rendus - Physique (8 issues per year) cover all fields of physics and astrophysics and propose dossiers. Thanks to this formula, readers of physics and astrophysics will find, in each issue, the presentation of a subject in particularly rapid development. The authors are chosen from among the most active researchers in the field and each file is coordinated by a guest editor, ensuring that the most recent and significant results are taken into account. In order to preserve the historical purpose of the Comptes Rendus, these issues also leave room for the usual notes and clarifications. The articles are written mainly in English.