  F-type star--planet systems represent an intriguing case for habitability
studies. Although F-type stars spend considerably less time on the
main-sequence than G, K, and M-type stars, they still offer a unique set of
features, allowing for the principal possibility of exolife. Examples of the
latter include the increased widths of stellar habitable zones as well as the
presence of enhanced UV flux, which in moderation may have added to the origin
of life in the Universe. In this study, we pursue a detailed statistical
analysis of the currently known planet-hosting F-type stars by making use of
the NASA Exoplanet Archive. After disregarding systems with little or no
information on the planet(s), we identify 206 systems of interest. We also
evaluate whether the stars are on the main-sequence based on various criteria.
In one approach, we use the stellar evolution code MESA. Depending on the
adopted criterion, about 60 to 80 stars have been identified as main-sequence
stars. In 18 systems, the planet spends at least part of its orbit within the
stellar habitable zone. In one case, i.e., HD 111998, commonly known as 38 Vir,
the planet is situated in the habitable zone at all times. Our work may serve
as a basis for future studies, including studies on the existence of Earth-mass
planets in F-type systems, as well as investigations of possibly habitable
exomoons hosted by exo-Jupiters as the lowest-mass habitable zone planet
currently identified has a mass estimate of 143 Earth masses.
