High-resolution spectroscopy and high contrast imaging with the ELT: looking for O2 in Proxima b
High-resolution spectroscopy and high contrast imaging with the ELT: looking for O2 in Proxima b
复制标题
使用 ELT 进行高分辨率光谱和高对比度成像:在 Proxima b 中寻找 O2
DOI:
10.1093/mnras/stz323
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发表时间:
2019
影响因子:
4.8
通讯作者:
Hawker G
中科院分区:
文献类型:
--
作者:
Hawker G
We research the requirements of high contrast imaging when combined with the cross-correlation (CC) of high-resolution spectra with known spectroscopic templates for detecting and characterizing exoplanets in reflected light. We simulate applying the technique to a potentially habitable Proxima b-like planet and show that the O2A-band spectral feature could feasibly be detected on nearby rocky exoplanets using future instruments on the ELT. The technique is then more widely analysed showing that detections of planets and O2with signal-to-noise ratio in the CC function (SNRCC) >3 can be obtained when the signal-to-noise ratio of the simulated planet spectrum (SNRspec) is from 0.25 to 1.2. We place constraints on the spectral resolution, instrument contrast, point spread function (PSF), exposure times and systematic error in stellar light subtraction for making such detections. We find that accurate stellar light subtraction (with 99.99 per cent removal) and PSFs with high spatial resolutions are key to making detections. Lastly a further investigation suggests the ELT could potentially discover and characterize planets of all sizes around different spectral type stars, as well as detecting O2on super-Earths with habitable zone orbits around nearby M stars.
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DOI:
10.1051/epjconf/20134711003
发表时间:
2013-03
期刊:
arXiv: Solar and Stellar Astrophysics
影响因子:
--
作者:
F. Rodler;M. Kurster;J. Barnes
通讯作者:
F. Rodler;M. Kurster;J. Barnes
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Ji Wang;D. Mawet;G. Ruane;R. Hu;B. Benneke
通讯作者:
B. Benneke
DOI:
10.17863/cam.8684
发表时间:
2016
期刊:
--
影响因子:
--
作者:
Marconi A
通讯作者:
Marconi A
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
M. Perrin;J. Long;Ewan S Douglas;A. Sivaramakrishnan;C. Slocum
通讯作者:
C. Slocum
影响因子:
6.5
作者:
H. J. Hoeijmakers;H. Schwarz;I. Snellen;R. Kok;M. Bonnefoy;G. Chauvin;A. Lagrange;Julien H. Girard
通讯作者:
Julien H. Girard