High-resolution Spectra for a Wide Range of Habitable Zone Planets around Sun-like Stars. (arXiv:2007.02420v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Madden_J/0/1/0/all/0/1">Jack Madden</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kaltenegger_L/0/1/0/all/0/1">Lisa Kaltenegger</a>
The search for life in the universe is currently focused on Earth-analog
planets. However, we should be prepared to find a diversity of terrestrial
exoplanets not only in terms of host star but also in terms of surface
environment. Simulated high-resolution spectra of habitable planets covering a
wide parameter space are essential in training retrieval tools, optimizing
observing strategies, and interpreting upcoming observations. Ground-based
extremely large telescopes like ELT, GMT, and TMT; and future space-based
mission concepts like Origins, HabEx, and LUVOIR are designed to have the
capability of characterizing a variety of potentially habitable worlds. Some of
these telescopes will use high precision radial velocity techniques to obtain
the required high-resolution spectra ($Rapprox100,000$) needed to characterize
potentially habitable exoplanets.
Here we present a database of high-resolution (0.01 cm$^{-1}$) reflection and
emission spectra for simulated exoplanets with a wide range of surfaces,
receiving similar irradiation as Earth around 12 different host stars from F0
to K7.
Depending on surface type and host star, we show differences in spectral
feature strength as well as overall reflectance, emission, and star to planet
contrast ratio of terrestrial planets in the Habitable zone of their host
stars. Accounting for the wavelength-dependent interaction of the stellar flux
and the surface will help identify the best targets for upcoming spectral
observations in the visible and infrared.
All of our spectra and model profiles are available online.
The search for life in the universe is currently focused on Earth-analog
planets. However, we should be prepared to find a diversity of terrestrial
exoplanets not only in terms of host star but also in terms of surface
environment. Simulated high-resolution spectra of habitable planets covering a
wide parameter space are essential in training retrieval tools, optimizing
observing strategies, and interpreting upcoming observations. Ground-based
extremely large telescopes like ELT, GMT, and TMT; and future space-based
mission concepts like Origins, HabEx, and LUVOIR are designed to have the
capability of characterizing a variety of potentially habitable worlds. Some of
these telescopes will use high precision radial velocity techniques to obtain
the required high-resolution spectra ($Rapprox100,000$) needed to characterize
potentially habitable exoplanets.
Here we present a database of high-resolution (0.01 cm$^{-1}$) reflection and
emission spectra for simulated exoplanets with a wide range of surfaces,
receiving similar irradiation as Earth around 12 different host stars from F0
to K7.
Depending on surface type and host star, we show differences in spectral
feature strength as well as overall reflectance, emission, and star to planet
contrast ratio of terrestrial planets in the Habitable zone of their host
stars. Accounting for the wavelength-dependent interaction of the stellar flux
and the surface will help identify the best targets for upcoming spectral
observations in the visible and infrared.
All of our spectra and model profiles are available online.
http://arxiv.org/icons/sfx.gif
