100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Telescopic Astronomy, Exploring Starlight $5.83
Add to cart
Quickly navigate to
Preview
  2.  
  3. GCSE
  4.  
  5. GCSE
  6.  
  7. Astronomy

Presentation

Telescopic Astronomy, Exploring Starlight
 0 purchase
  • Course
  • Astronomy
  • Institution
  • GCSE

Summary and review notes of Edexcel GCSE Astronomy Paper 2, Topic 13- Exploring Starlight. Here, there are comprehensive notes per specification point, topic-by-topic questions, and exam-style questions specifically related to the Topic. The "Exploring Starlight" topic builds student's understandin...

[Show more]

Preview 4 out of 63  pages

Document information

  • September 3, 2023
  • 63
  • 2023/2024
  • Presentation
  • Unknown

Subjects

  • astronomy
  • igcse
  • gcse
  • paper 2
  • exploring starlight

Written for

  • GCSE
  • GCSE
  • Astronomy
  • 1
All documents for this subject (18)

Seller

avatar-seller
williamsmith1

Content preview

Topic 13: Exploring Starlight
Specification
Point Necessary Understanding

13.1 Understand the AU scale and how apparent magnitude relates to the brightness of
stars when viewed from Earth
13.2 Understand the term of absolute magnitude

13.3 Use the distance modulus formula to determine magnitude and distance of a star

13.4 Understand information that can be obtained from a stellar spectrum

13.5 Understand how stars can be classified according to spectral type

13.6 Understand how a star’s colour and spectral type related to surface temperature

13.7 Be able to sketch a simple Hertzsprung-Russel diagram
Understand how a star’s life cycle relates to its position on the Hertzsprung-Russel
13.8
diagram

, Understand the astronomical magnitude scale and how apparent magnitude relates to the brightness of
13.1
stars a viewed from Earth
13.2 Understand the term absolute magnitude




Magnitude is a unitless measuremen
the brightness of an object.


The astronomical magnitude scale
logarithmic.


Astronomers have two different defin
of magnitude:


Apparent Magnitude

Brightness of an object, dependent
object’s intrinsic luminosity, its dist
and the extinction (i.e., light absorpt
scattering) of its light

Absolute Magnitude
[1]

The intrinsic luminosity emitted b
object.
Absolute Magnitude = Apparent Mag
if the star were 10 parsecs aw

,13.1, 2
What is magnitude in relation to stars?


How is magnitude defined?


What is the definition of apparent and absolute magnitude?


How do apparent and absolute magnitude differ?

, 13.3 Use the distance modulus function
Understand the inverse square relationship between distance and
13.9
brightness/intensity




When quantifying the magnitude of a star, it is useful to consider
how the star’s light diminishes in intensity over distance: the
inverse-square law.

When expressing the distance in astronomy, we can use the
distance modulus system to describe distances on a logarithmic
[1]
scale based on the astronomical magnitude system.



𝑚− 𝑀
log 10 ( 𝑑)=1+
5 The distance modulus (µ) is the difference between the appa
magnitude (m) – ideally corrected by interstellar absorption
the absolute magnitude (M) of an astronomical object.



( )
𝑑 Where M is defined as the apparent magnitude of an object when see

𝑚 − 𝑀 =5 log 10 distance of 10 parsecs…

10
The distance modulus function is regularly used to express
distance to other galaxies in the relatively nearby univer

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller williamsmith1. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $5.83. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

69411 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$5.83
  • (0)
Add to cart
Added