Question 1

In studying newly forming star regions such as the Great Nebula of Orion,which portion of the electromagnetic spectrum is MOST valuable?

Accepted Answer

A)  infrared 
B)  visible 
C)  gamma ray 
D)  X-ray 
A)  infrared 
B)  visible 
C)  gamma ray 
D)  X-ray

Question 2

The exoplanet HAT P-32b,discovered in 2011 in the constellation Andromeda,has been measured to have a mass about the same as Jupiter's but a radius about twice that of Jupiter.How does its density compare with Jupiter's density?

Accepted Answer

A)  It is smaller than Jupiter's density. 
B)  It is about the same as Jupiter's density. 
C)  It is twice Jupiter's density. 
D)  It is eight times Jupiter's density. 
A)  It is smaller than Jupiter's density. 
B)  It is about the same as Jupiter's density. 
C)  It is twice Jupiter's density. 
D)  It is eight times Jupiter's density.

Question 3

How do we measure the mass of an extrasolar planet?

Accepted Answer

A)  We use Newton's law of gravity, using the measured distance of the planet from its star and the planet's gravitational pull on the star. 
B)  We measure the change in the brightness of a distant star that the planet causes by microlensing. 
C)  We use spectra to measure the planet's temperature and photometry to measure its brightness. 
D)  We measure the planet's angular diameter and hence its size and then use spectra to find its composition and hence density. 
A)  We use Newton's law of gravity, using the measured distance of the planet from its star and the planet's gravitational pull on the star. 
B)  We measure the change in the brightness of a distant star that the planet causes by microlensing. 
C)  We use spectra to measure the planet's temperature and photometry to measure its brightness. 
D)  We measure the planet's angular diameter and hence its size and then use spectra to find its composition and hence density.

In studying newly forming star regions such as the Great Nebula of Orion,which portion of the electromagnetic spectrum is MOST valuable?

The exoplanet HAT P-32b,discovered in 2011 in the constellation Andromeda,has been measured to have a mass about the same as Jupiter's but a radius about twice that of Jupiter.How does its density compare with Jupiter's density?

How do we measure the mass of an extrasolar planet?

Discovering the Night Sky

Gravitation and the Waltz of the Planets

Light and Telescopes

Formation of the Solar System and Other Planetary Systems

The Terrestrial Planets and Their Moons

The Outer Planets and Their Moons

Vagabonds of the Solar System

The Sun: Our Extraordinary Ordinary Star

Characterizing Stars

The Lives of the Stars From Birth Through Middle Age

The Deaths and Remnants of Stars

The Galaxies

Cosmology

Astrobiology

Filters

Exam 5: Exoplanets

In studying newly forming star regions such as the Great Nebula of Orion,which portion of the electromagnetic spectrum is MOST valuable?

The exoplanet HAT P-32b,discovered in 2011 in the constellation Andromeda,has been measured to have a mass about the same as Jupiter's but a radius about twice that of Jupiter.How does its density compare with Jupiter's density?

How do we measure the mass of an extrasolar planet?

Discovering the Night Sky

Gravitation and the Waltz of the Planets

Light and Telescopes

Formation of the Solar System and Other Planetary Systems

The Terrestrial Planets and Their Moons

The Outer Planets and Their Moons

Vagabonds of the Solar System

The Sun: Our Extraordinary Ordinary Star

Characterizing Stars

The Lives of the Stars From Birth Through Middle Age

The Deaths and Remnants of Stars

The Galaxies

Cosmology

Astrobiology

Filters