1740M_Assignment2_W24_TEMPLATE
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NATS 1740M ASSIGNMENT 2: Exoplanets W 24
FULL NAME (underline last):
STUDENT NUMBER:
--------------------------------------------------------------------------
Verification of Academic Integrity cover sheet
Assignment will not be graded unless this cover sheet is filled out and signed, and placed at the beginning of the assignment.
Full Name (underline Last): ____________________________________
Student Number: ____________________________________________
Course Name & Number: ______________________________________
Assignment Name & Number: __________________________________
Date: ______________________________________________________
In this assignment (check all that apply)
when I have taken word for word material from a source, I have enclosed the material in quotes,
and given the source a proper in-text citation
when I have taken numbers, facts or ideas which are outside of common knowledge, I have given the source a proper in-text citation
when I have performed experiments or made observations, I have included my own observations, and not presented falsified or imagined data, or results copied from a source or from another student
when I present an image or a figure taken from a source, I have given the source a proper in-text
citation
when answering questions in the assignment, I have not copied my answers from a source or from another student
I have presented all of my reference material in a reference section at the end of an assignment, which contains all of my sources (including web, book, video, and lecture sources)
except for quoted material from a source, I have written the rest of the assignment IN MY OWN WORDS
My signature confirms what I have checked above to be true _________________________________
Part 1: Transit Method Exercise and Questions
Table: Summary of Results:
P (days)
P (years)
M (M
ʘ
)
a (AU)
Star 1
Star 2
Star 3
Star 4
Q1.
Which star has a planet at a similar distance as the Earth is to the Sun? _________
Q2.
Which star has no evidence for a planet? __________
Q3.
On the circle representing the image of a star below, sketch the position of a planet when it (A)
is starting to transit the star, (B)
is in full transit, (C)
has completed transiting the star.
Q4.
The graph below is a composite / co-addition of many transit events, mapped to create an ‘average’ transit. Indicate on the graph the points in the orbit when the planet (A)
is starting to transit the star, (B)
is in full transit, (C)
has completed transiting the star.
Q5.
How could astronomers use the graph in Q4 to estimate the diameter of the transiting planet?
Part 2: Doppler Shift or Radial Velocity Method Questions
Sample spectra:
Q7. How would astronomers use spectra A, B and C to precisely calculate how fast the star was moving?
A
B
C
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Q8
. How would the speed the star is moving allow astronomers to be able to deduce information about the orbiting planet? What type of information could the astronomers calculate?
Q9.
Why did the first exoplanets discovered by this method tend to be called ‘hot Jupiters’? (Define a hot Jupiter.)
Part 3: REPORT
Name of exoplanetary system
Details of the structure and layout of the system (i.e. number of planets discovered, distance from star,
eccentricity/shape of orbits, masses of planets; type/class of star)
At least one image – data used, and/or artist’s concept (include reference)
Telescope(s) / satellites used to observe exoplanetary system
A description of the type of data collected (images, spectra, etc.) and a brief description of the method
of detecting the exoplanet (e.g. transit method, doppler shift method, or some combination, or some
other method)
Any unusual facts about or properties of the planet
References in APA or MLA format with proper use of in text citations