Finding exoplanets

Radial Velocity

Transits

Direct Imaging

Gravitational microlensing

Astrometry

TESS camera apertures

Kepler primary mirror

TESS

Most stars aren' t single

\Theta \approx \lambda/d
\approx \lambda / r_0

but atmospheric turbulence limit resolution to 

The problem of the atmosphere

details = color ÷ telescope size

details = color ÷ atmosphere turbulence (~10cm)

Classifying

exoplanets

  • Hot Jupiters
  • lava planets
  • rogue planets
  • lethal rain
  • devoured planets
  • evaporating planets
  • eccentric orbits
  • ocean planets
  • zombie planets

Tidally locked planets

Eyeball planets

Multiple-habitable worlds in a single system?

Circumbinary planets

Kepler-16

Super-Earth or mini-Neptune?

Garnet planets

Plate tectonics & magnetic fields - these are important for life

We know the compositions of the stars.....the same elements likely go into the planets that form

Atmospheres

&

Biosignatures? 

Oxygen

Giordano Bruno

(1548 – 1600)

Italian Friar

  • proposed stars were distant suns surrounded by their own planets
  • possibility that these planets might foster life of their own
  • insisted that the universe is infinite and could have no center

 

1593 - was tried for heresy and later burned at the stake

Oct 1995

links:

Light

Characteristics

  • Intensity
    • photometry
      • magnitudes
      • transits
  • Wavelength
    • spectrum
      • radial velocity
      • composition
    • incandescence 
    • emission
    • absorption
  • Interference
  • Polarization
    • linear
    • circular

Solar system

  • Why does Saturn have rings? What are the rings?

Moons that are other worlds:

Stars

Stellar Evolution

<0.08

0.08-0.4

0.4-8

>8

>20

>3

1.4-3

>1.4

Solar Masses

Scales and galaxies

Oumuamua

Random

Why is the government underfunding NASA? Are there other ways for NASA to get money?

Was the moon landing fake?

Exoplanets & how to find them

By Nic Scott

Exoplanets & how to find them

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