Re: Number of low eccentricity distant planets

On 23 veebr, 23:40, Erik Max Francis <m...@[EMAIL PROTECTED]
> wrote:
> Mike Williams wrote:
> > Decide what value you consider to be "low eccentricity" and count off
> > the pro****tion. As a guide, the eccentricity of the Earth is 0.0167.
> > About 16% of those extrasolar planets have orbits that are less
> > eccentric than that of the Earth. I ignored exoplanets for which the
> > eccentricity has not been calculated.
>
> Note that there are very strong selection effects here which are sure to
> affect the distribution of known eccentricities.  The real answer is
> that we don't yet know.
>
Precisely how do the selection effects affect the distribution?

For one thing, selection effect favour close-in hot Jupiters - and
these tend to have low eccentricities. After excluding the short
period planets, what is the remaining picture?