EarthFinder探测任务概念研究：表征邻近恒星系外行星系统中具地球质量的类地行星以服务未来直接成像
天体物理仪器与方法
2020-06-25 v1 地球与行星天体物理
摘要
EarthFinder是一项NASA天体物理探测任务概念，被选入研究以作为2020年天体物理国家科学院十年调查的输入。EarthFinder概念基于我们对应如何进行PRV（精密视向速度）测量的理解发生巨大转变。我们提出一种新范式，将Kepler和TESS所证明的高精度、高节奏凌星测光领域引入到cm/s量级PRV测量的挑战中。这一新范式利用了：1）从UV到NIR的宽波长覆盖，这只能从太空实现以最小化恒星活动影响；2）极其紧凑、高度稳定、高效的摄谱仪（R>150,000），其需要仅能从太空在宽波长范围内实现的衍射极限成像；3）基于激光的波长标准革新，以确保多年内cm/s精度；4）高节奏观测程序，最小化采样引起的周期混叠；5）利用太空的绝对流量稳定性进行连续谱归一化，以实现地面无法实现的空前逐线分析；以及6）聚焦于明亮恒星，它们将是未来成像任务的目标，从而EarthFinder可使用约1.5 m望远镜。
引用
@article{arxiv.2006.13428,
title = {EarthFinder Probe Mission Concept Study: Characterizing nearby stellar exoplanet systems with Earth-mass analogs for future direct imaging},
author = {Peter Plavchan and Gautam Vasisht and Chas Beichman and Heather Cegla and Xavier Dumusque and Sharon Wang and Peter Gao and Courtney Dressing and Fabienne Bastien and Sarbani Basu and Thomas Beatty and Andrew Bechter and Eric Bechter and Cullen Blake and Vincent Bourrier and Bryson Cale and David Ciardi and Jonathan Crass and Justin Crepp and Katherine de Kleer and Scott Diddams and Jason Eastman and Debra Fischer and Jonathan Gagné and Scott Gaudi and Catherine Grier and Richard Hall and Sam Halverson and Bahaa Hamze and Enrique Herrero Casas and Andrew Howard and Eliza Kempton and Natasha Latouf and Stephanie Leifer and Paul Lightsey and Casey Lisse and Emily Martin and William Matzko and Dimitri Mawet and Andrew Mayo and Patrick Newman and Scott Papp and Benjamin Pope and Bill Purcell and Sam Quinn and Ignasi Ribas and Albert Rosich and Sophia Sanchez-Maes and Angelle Tanner and Samantha Thompson and Kerry Vahala and Ji Wang and Peter Williams and Alex Wise and Jason Wright},
journal= {arXiv preprint arXiv:2006.13428},
year = {2020}
}
备注
NASA Probe Mission concept white paper for 2020 Astrophysics National Academies Decadal Survey