Upload
sergio-sacani
View
1.455
Download
2
Tags:
Embed Size (px)
Citation preview
Pete Worden Center Director, Ames Research Center
Natalie Batalha Kepler Deputy Science Team Lead, San Jose State University
What fraction of stars in our galaxy harbor potentially habitable, Earth-size planets?
Planet Candidates as of June 2010
Orbital Period in days
Siz
e R
elat
ive
to E
arth
Jun 2010
Planet Candidates as of Feb 2011
Orbital Period in days
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011
Planet Candidates as of Dec 2011
Orbital Period in days
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
Sizes of Planet Candidates
207
680
1181
203 27 (+204%)
(+136%)
(+78%)
(+23%)
(+42%)
Earth-size −
Super Earth-size −
− Neptune-size
− Jupiter-size − Super Jupiter-size
Candidates in the Habitable Zone
Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
223K - 373K
Dec: 139
Feb: 54
Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
185K - 303K
Dec: 48
Feb: 25
Candidates in the Habitable Zone
Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
Ten Near-Earth-Size Candidates in the Habitable Zone (185-303 K)
Equilibrium Temperature [K]
Siz
e R
elat
ive
to E
arth
Jun 2010 Feb 2011 Dec 2011
Ten Near-Earth-Size Candidates in the Habitable Zone (185-303 K)
William Borucki Kepler Principal Investigator at Ames
Data Confirmation
Data Confirmation
Composition Dependence on the Radius and Mass of a Planet
First Confirmed Kepler Planet In the Habitable Zone
When Is an Earth-Analog"Really an Earth-Analog?
Jill Tarter, Director, Center for SETI Research
The Allen Telescope Array
ATA-42
Shasta
Lassen
Allen Telescope Array
Hat Creek Radio Observatory
3He+
NO
ISE
ME
AS
UR
ED
IN
DE
GR
EE
S K
ELV
IN
FREQUENCY IN GHz
Hydrogen 3Helium+
f0 = 1420 MHz λ0 = 21 cm
f0 = 8666 MHz λ0 = 3.46 cm
Hyperfine Spin-Flip Transition
Voyager 1 Signal from 106 AU Away
Frequency
Tim
e
Last Month Looking at Mars
Frequency
Tim
e
MRO
Mars Express