An F7V star with about 1.9 times solar luminosity and the planet at 1.4 AU would work, but this star would then be considerably younger than our Sun, maybe 3 billion years or so.
However, another solution is to simply assume the dragonworld's sun is a sun-like G2-star but older, because then of course it would be brighter. But then it probably is so old it is moving off the main sequence into a subgiant, G2IV-V, and then the planet would be almost 10 billion years old.
You can use a middle way, say an F9V star older than the Sun but just an extra billion years or so, if my math works out.
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Date: 2007-09-17 08:00 pm (UTC)However, another solution is to simply assume the dragonworld's sun is a sun-like G2-star but older, because then of course it would be brighter. But then it probably is so old it is moving off the main sequence into a subgiant, G2IV-V, and then the planet would be almost 10 billion years old.
You can use a middle way, say an F9V star older than the Sun but just an extra billion years or so, if my math works out.