strange new worlds · strange new worlds Author: De Leon, Mayra Created Date: 2/10/2020 2:45:10 PM...
Transcript of strange new worlds · strange new worlds Author: De Leon, Mayra Created Date: 2/10/2020 2:45:10 PM...
S T R A N G E N E W
W O R L D S
R A V I K O P P R A P U ( N A S A G O D D A R D )
O C C U R R E N C E R A T E S O F H A B I T A B L E
Z O N E P L A N E T S
H A B I T A B L E Z O N E S
Kopparapu et al. (2013a, 2014)
Kane et al. (2014)
With some exceptions for certain types of planets, there has not
been an overarching way to classify planets beyond the HZ.
+
+
=?
• The orbital separation of
planets could affect the
chemical composition of the
atmosphere.
• As a planet moves further
from its star, progressively
less volatile chemicals
condense in the atmosphere
Courtesy: Eric Hebrard
Kopparapu + 2018
Kopparapu + 2018
W H Y A R E Y O U D O I N G I T ?
W H Y A R E Y O U D O I N G I T ?
In the search for exo-Earth candidates, we
will detect a multitude of brighter planets.
4m
= Earths in the HZ
= “Hot” plants
= “Warm” planets
= “Cold” planets
8m
= Earths in the HZ
= “Hot” plants
= “Warm” planets
= “Cold” planets
16m
= Earths in the HZ
= “Hot” plants
= “Warm” planets
= “Cold” planets
H A B E X
S Y N E R G Y ?
Solar system objects Exo”objects”
Instellation
(Incident flux)
Solar system objects Exo”objects”
Instellation
(Incident flux)
planets
S Y N E R G Y ?
Solar system objects Exo”objects”
Instellation
(Incident flux)
planets
?
S Y N E R G Y ?
Ancient Present
Earth
Venus
F I N E P R I N T & S U M M A R Y
• *Applicable only for Sun-like stars. Not applicable for FK & M.
• *SED affects include UV to IR variation + activity. Not recommended for older stars off mainsequence.
• *Kopparapu et al. are not responsible for changes in the mass-radius relationship due to incident fluxes.
• *Photochemical hazes could impact the boundaries, on top of cloud condensates. Don’t apply when hazy!
4m 8m
16m