论文标题
Coralie radial速度搜索周围进化的星星（级联）的同伴。 I.样本定义和第一个结果：三个新的行星绕着巨星
CORALIE radial-velocity search for companions around evolved stars (CASCADES). I. Sample definition and first results: Three new planets orbiting giant stars
论文作者
论文摘要
语境。在2002年第一次发现绕着巨星旋转的行星之后，我们开始了Coralie Radial-velocity在进化的星星（Cascades）周围的同伴搜索。我们使用Coralie Spectrograph在智利La Silla天文台的1.2 M Leonard Euler Swiss望远镜进行的三颗恒星的观察结果。目标。我们旨在检测行星伴侣对中间质量的G型和K型进化的星星，并对该人群进行统计分析。我们在星空周围搜索了新的行星系统HD22532（TIC 200851704），HD64121（TIC 2647770836）和HD69123（TIC 146264536）。方法。自2006年以来，我们遵循了641个红色巨人的体积限制样本，以获得高精度的径向速度测量。我们使用数据与分析中心（DACE）平台来执行径向速度分析，以搜索线轮廓和活动指标中的周期信号，以区分行星诱导的径向辐射速度变化和出色的光谱抖动，并在radial-velipity time sercers中搜索相应的kepplerian模型中的重要信号。结果。在本文中，我们详细介绍了调查，并报告了围绕巨星HD22532，HD64121和HD69123的样品的前三个行星的发现。
Context. Following the first discovery of a planet orbiting a giant star in 2002, we started the CORALIE radial-velocity search for companions around evolved stars (CASCADES). We present the observations of three stars conducted at the 1.2 m Leonard Euler Swiss telescope at La Silla Observatory, Chile, using the CORALIE spectrograph. Aims. We aim to detect planetary companions to intermediate-mass G- and K- type evolved stars and perform a statistical analysis of this population. We searched for new planetary systems around the stars HD22532 (TIC 200851704), HD64121 (TIC 264770836), and HD69123 (TIC 146264536). Methods. We have followed a volume-limited sample of 641 red giants since 2006 to obtain high-precision radial-velocity measurements. We used the Data & Analysis Center for Exoplanets (DACE) platform to perform a radial-velocity analysis to search for periodic signals in the line profile and activity indices, to distinguish between planetary-induced radial-velocity variations and stellar photospheric jitter, and to search for significant signals in the radial-velocity time series to fit a corresponding Keplerian model. Results. In this paper, we present the survey in detail, and we report on the discovery of the first three planets of the sample around the giant stars HD22532, HD64121, and HD69123.
