An exoplanet is observed to transit across a 0.1 solar mass
star.
(i) If it is in the middle of its habitable zone (Earth
conditions), what value should be measured for its period, and mass
if its velocity amplitude K is measured to be ~ 2 ms-1
(ii) The transit depth is measured to be ΔL / L = 10-3.
What is the radius of the planet? (you’ll need to look up some
stellar data). What is the planet’s density? Is the planet
Earth-like in its composition?
An exoplanet is observed to transit across a 0.1 solar mass star. (i) If it is...
HD209458b was discovered in 1999, becoming the first exoplanet to be discovered using the transit method: this planet’s orbit is oriented just right, so that it regularly passes in front of its star, as seen from Earth. When this happens, it blocks out a portion of the star’s light. If astronomers notice the star’s brightness dipping for a short time over and over with a consistent period, it suggests a planet is responsible. Further observations of the star’s Doppler shift...
A star has a mass of 3 solar masses (3 times the mass of the Sun). If a planet is 1 AU from this star, should its orbit be more or less than 1 Earth year? Explain why or why not. (show work) You see a planet that takes 1 year to orbit its star, but the planet averages 10 AU from its star. Explain what this tells you about the star.
m. solar nebula к. asteroid I. comet Jovlll plalie n. planetesimal 2. A star had 10 times the mass of the Sun when it was on the Main Sequence. At the end of its life it has a core with a mass two times the mass of theSn. Explin what hppdto the rest of the mas and wiy, o. lunar eclipse p. solar eclipse 9. Where did the heavy elements that most of the Earth is composed of originate? a)...