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Diagnostic potential of the spectral signatures of Raman scattering imprintedin planetary albedo spectra at short optical wavelengths has been demonstratedin research on Solar System planets and has recently been proposed as a probeof exoplanet atmospheres, complementary to albedo studies at longerwavelengths. Spectral features caused by Raman scattering offer insight intothe properties of planetary atmospheres, such as the atmospheric depth,composition, and temperature, as well as the possibility of detecting andspectroscopically identifying spectrally inactive species, such as H$_2$ andN$_2$, in the visible wavelength range. Raman albedo features, however, dependon both the properties of the atmosphere and the shape of the incident stellarspectrum. Identical planetary atmospheres can produce very different albedospectra depending on the spectral properties of the host star. Here we presenta set of geometric albedo spectra calculated for atmospheres with H$_2$/He,N$_2$, and CO$_2$ composition, irradiated by different stellar types rangingfrom late A to late K stars. Prominent albedo features caused by Ramanscattering appear at different wavelengths for different types of host stars.We investigate how absorption due to alkali elements, sodium and potassium, mayaffect the intensity of Raman features, and discuss the preferred observingstrategies for detecting Raman features in future observations.

How does the shape of the stellar spectrum affect the Raman scattering features in the albedo of exoplanets?