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Ingenium Canada Aviation and Space Museum

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Astrophysics from Home: Monitoring a Variable Star

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11 Aviation Parkway, Ottawa, ON
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Browse all Visitor Information for Canada Aviation and Space Museum
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Astrophysics from Home: Monitoring a Variable Star

stars in the sky

Do you want to help astrophysicists monitor how a variable star changes over time? Enter your email and click ‘observe’ to collect data! Every click will take a new image of the variable star TW Cap using the Las Cumbres Observatory, a global network of powerful telescopes.

Why do I have to enter my email?

By entering your email, we will be able to send you the data you collected (a picture of the star) and the location of the telescope that captured the image. We’ll also keep you updated on the project as other citizen scientists like you contribute. See Ingenium's Privacy Statement.

 
Observation scheduled successfully!

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Note: The form is now closed. Thank you for your participation!
 
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Timelapse made from [Loading...] images, last updated [Loading...]

 
 

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What is a variable star?

Most stars do not change their brightness, but some do; these are known as variable stars. Pulsating variable stars periodically grow and shrink in size, which changes their brightness. This is because a pulsating variable star is near the end of its life, when it begins to become unstable.

A star field with the boundaries of the constellation Capricornus
Photo Credit
International Astronomical Union / Sky & Telescope

The boundaries of the constellation Capricornus, defined by the International Astronomical Union (IAU).

A star field, the constellation Capricornus
Photo Credit
Stellarium

The yellow circle indicates the position of TW Cap on the sky, in the constellation of Capricornus.

Why do we monitor variable stars?

For pulsating variable stars, the change in brightness tells scientists about the changes in size and shape of the star. This helps scientists measure properties of the stars like mass, size, luminosity, temperature, but also internal structure, composition, and evolution.

The time it takes for a variable star to go from maximum brightness to minimum brightness isn’t always the same, so scientists try to continually monitor these stars to look for changes. With the help of citizen scientists, like you, scientists get more data to help better understand why variable stars pulsate.

What star are we observing?

This project is monitoring the star TW Cap.

TW Cap is a variable star in the constellation Capricornus. The pulsation period is 28.585 days. It is a CWA-type variable (cepheid). These are short period variable stars, giants. It is 5 to 20x the mass of the sun.

What telescope will be doing the observation?

The Canada Aviation and Space Museum is in partnership with the Las Cumbres Observatory, a global network of telescopes all around the world. One of their 40 cm telescopes will automatically observe the star each time you submit an observation request.

Connect with us on social media!

We need more citizen scientists like you! When you receive your data, share it with your friends and family on social media, and be sure to tag the Canada Aviation and Space Museum.

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Las Cumbres Observatory

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About Canada Aviation and Space Museum

Canada Aviation and Space Museum
Located on a former military air base just five kilometers from the Prime Minister’s residence at 24 Sussex Drive in Ottawa, the Canada Aviation and Space Museum focuses on aviation in Canada within an international context – from its beginnings in 1909 to today.
Read more about the museum

Contact Us

Canada Aviation and Space Museum
11 Aviation Parkway
Ottawa ON K1K 2X5
Canada

613-991-3044
1-866-442-4416
contact@IngeniumCanada.org
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  • Plan Your Visit
    • Health and Safety
    • Hours
    • Admission
    • Location and Directions
    • Accessibility
    • Browse All Visitor Information
    • Buy Tickets
    • Online Resources for Science at Home
    • About the Museum
  • What's On at the Museum
    • Events
    • Exhibitions
    • Flights and Simulations
    • Spaces and Studios
  • Bookings and Rentals
    • School Programs
    • Summer Camps
    • Venue Rentals
    • Travelling Exhibitions
    • Virtual Field Trips
    • Group Visits
    • Birthday Parties
  • Educational Programs
    • School Programs
    • Virtual Field Trips
    • Program Location
      • At the Museum
      • At your School
      • Online
      • Browse all Educational Programs
    • Popular Links
      • 3D Educational Resources
      • Digital Learning Kits
      • Games and Apps
      • Online Resources for Science at Home
      • Try This Out
  • Collection and Research
    • Research Institute
    • Research Projects
    • Collection Resources
      • Ingenium Collection
      • Collection Highlights
      • Conservation and Collection Services
    • Library and Archives
      • Library and Archives Services
      • Library Catalogue
      • Digital Archives
    • Open Access
      • Ingenium APIs
      • Open Data
      • Open Documents
  • Projects and Initiatives
    • Ingenium Channel
    • The Legacy Series
    • Let's Talk Energy