how many of these ?

How many of these ?

Out there

At least One in Six stars has an Earth-size planet

Francois Fressin, G. Torres, D. Charbonneau

& the team

The list of Kepler candidates contains most of the knowledge about exoplanets.

From the February 2012 catalog

The list of Kepler candidates contains most of the knowledge about exoplanets.

But it is not COMPLETE,

The list of Kepler candidates contains most of the knowledge about exoplanets.

But it is not COMPLETE, and it is not PURE.

An observed periodic transit signal could be due to:

Transiting Planet Eclipsing Binary

Kepler candidates PURITY : The issue of false positives

An observed periodic transit signal could be due to:

Transiting Planet Eclipsing Binary

Kepler candidates PURITY : The issue of false positives

We found that they can only account for 9.5 % of the huge number of Kepler candidates

8

Occurrence of Planets

Small

9

The Occurrence of Earth-size planets

< 85 days ?

Habitable zone ?

10

The Occurrence of Earth-size planets

17 %

< 85 days ?

Habitable zone ?

11

The Occurrence of Earth-size planets

17 % Too Early to

call

< 85 days ?

Habitable zone ?

17 % stars have an Earth-size planet within 85 days

And 70 % within 400 daysBut it does not include long-period Earths & Super Earths

Stars & Planetary Systems

Almost all Sun-like stars have a planetary system !

Preliminary results for the New candidate catalog

The occurrence of planets we determined are in agreement with the new candidate list.

Kepler detection efficiency improved.

February 2012 January 2013

It was previously thought that small planets were more common orbiting small stars

The results of Kepler can be explained with planets equally commonorbiting the different stellar types

Planets and stellar type

Sun

At least 1 star in 6 has an Earth-size planet

Almost all stars have a planetary system

Small planets are equally common around all stars

Conclusions

17 %

Too early