American Scientist
... in the field of astronomy and astrophysics is planet formation: the study of how planets (in our Solar System) and exoplanets (orbiting other stars) form. Astronomers harness the power of telescopes with meter-sized or larger mirrors to search the night sky for exoplanets—and they find loads of them ...
... in the field of astronomy and astrophysics is planet formation: the study of how planets (in our Solar System) and exoplanets (orbiting other stars) form. Astronomers harness the power of telescopes with meter-sized or larger mirrors to search the night sky for exoplanets—and they find loads of them ...
Lecture 7: Extrasolar Planets 01/08/2013 update: 725 exoplanets
... Current limits: • Maximum a ~ 3.5AU (i.e. orbital period ~ 7 years) • Minimum mass ~ 0.5 Jupiter masses at 1AU, scaling with square root of semi-major axis • No strong selection bias in favour/against detecting planets with different eccentricities Of the first 100 stars found to harbor planets, mor ...
... Current limits: • Maximum a ~ 3.5AU (i.e. orbital period ~ 7 years) • Minimum mass ~ 0.5 Jupiter masses at 1AU, scaling with square root of semi-major axis • No strong selection bias in favour/against detecting planets with different eccentricities Of the first 100 stars found to harbor planets, mor ...
Probing the Atmospheres of Exoplanets
... HD 209458b’s atmospheric composition was probed when the planet transited the star. As the light from the parent star passed briefly through the atmosphere along the edge of the planet, the gases in the atmosphere imprinted their unique absorption signatures on the starlight. Using this technique, ...
... HD 209458b’s atmospheric composition was probed when the planet transited the star. As the light from the parent star passed briefly through the atmosphere along the edge of the planet, the gases in the atmosphere imprinted their unique absorption signatures on the starlight. Using this technique, ...
Are planetary systems flat?
... – it is astonishing to see all the planets move around the Sun from west to east, and almost in the same plane; all the satellites move around their planets in the same direction and nearly in the same plane as the planets; finally, the Sun, the planets, and all the satellites that have been observe ...
... – it is astonishing to see all the planets move around the Sun from west to east, and almost in the same plane; all the satellites move around their planets in the same direction and nearly in the same plane as the planets; finally, the Sun, the planets, and all the satellites that have been observe ...
PART 1 OBJECTS IN THE SOLAR SYSTEM 4.1 INTRODUCTION
... been called “trans-Neptunian” objects and “ice dwarfs,” have now been observed beyond the orbit of Neptune. There are thousands of Kuiper belt objects known to exist including several discovered more recently that rival the size of Pluto such as Eris that may be as large or larger than Pluto. In the ...
... been called “trans-Neptunian” objects and “ice dwarfs,” have now been observed beyond the orbit of Neptune. There are thousands of Kuiper belt objects known to exist including several discovered more recently that rival the size of Pluto such as Eris that may be as large or larger than Pluto. In the ...
Detecting the glint of starlight on the oceans of distant planets
... inner working radius 4λ/D ∼ 0.057 for an 8-meter telescope observing at λ = 550 nm. The phase range for planet detection is somewhat wider for less-inclined orbits, but narrower for planets closer to their stars. According to Fig. 2, it will be impossible to detect thin-crescent planets (fA < 0.25 ...
... inner working radius 4λ/D ∼ 0.057 for an 8-meter telescope observing at λ = 550 nm. The phase range for planet detection is somewhat wider for less-inclined orbits, but narrower for planets closer to their stars. According to Fig. 2, it will be impossible to detect thin-crescent planets (fA < 0.25 ...
13_Lecture_Outline
... • The Sun’s motion around the solar system’s center of mass depends on tugs from all the planets. • Astronomers around other stars that measured this motion could determine the masses and orbits of all the planets. © 2010 Pearson Education, Inc. ...
... • The Sun’s motion around the solar system’s center of mass depends on tugs from all the planets. • Astronomers around other stars that measured this motion could determine the masses and orbits of all the planets. © 2010 Pearson Education, Inc. ...
Photosynthetic Potential of Planets in 3:2 Spin Orbit
... increased as a result of Mercury’s relatively large orbital eccentricity of 0.206. This high eccentricity also allows the resonance to be sustained through restoring torques on the unchanging (non-tidal) axial asymmetry of the planet (Peale, 1988). These restorative torques keep the longest equatori ...
... increased as a result of Mercury’s relatively large orbital eccentricity of 0.206. This high eccentricity also allows the resonance to be sustained through restoring torques on the unchanging (non-tidal) axial asymmetry of the planet (Peale, 1988). These restorative torques keep the longest equatori ...
Catching Planets in Formation with GMT
... • Substantial mismatch between predicted and observed distribution of exoplanets. • Major uncertainties: • How do gas-giant planets form. • How much do planets migrate. • Are there many habitable (water, etc) planets. ...
... • Substantial mismatch between predicted and observed distribution of exoplanets. • Major uncertainties: • How do gas-giant planets form. • How much do planets migrate. • Are there many habitable (water, etc) planets. ...
Chapter 13 Other Planetary Systems: The New Science of Distant
... • The Sun’s motion around the solar system’s center of mass depends on tugs from all the planets. • Astronomers around other stars that measured this motion could determine the masses and orbits of all the planets. © 2010 Pearson Education, Inc. ...
... • The Sun’s motion around the solar system’s center of mass depends on tugs from all the planets. • Astronomers around other stars that measured this motion could determine the masses and orbits of all the planets. © 2010 Pearson Education, Inc. ...
The Cosmic Perspective Other Planetary Systems: The New Science
... – Direct starlight is billions of times brighter than the starlight reflected from planets. • How can a star's motion reveal the presence of planets? – A star's periodic motion (detected through ...
... – Direct starlight is billions of times brighter than the starlight reflected from planets. • How can a star's motion reveal the presence of planets? – A star's periodic motion (detected through ...