Multiple Stars

Do you know about double and multiple stars?

How much do you know about astronomy? How about double and multiple stars?

Today we have challenging questions about our double and multiple stars based on the article “Double and Multiple Stars” by Brian D. Mason in the Observer’s Handbook 2019.

I created five questions that could be answered without reading this chapter.

You have up to five minutes to complete the challenge today.

Begin now. Do your best.

  1. Within 5 %, what percent of stars are found in double or multiple systems?

 

  1. The companion star of Sirius is in what stage of evolution?

 

  1. The companion star of Procyon is in what stage of evolution?

 

  1. The A component of the Alpha Centauri system is a near twin of what other star?

 

  1. What’s unique about “alpha Cen C”?

 

OK, pencils down. Scroll down for directions for checking your answers.

Please read directions below:

Step 1: Please contribute to one of these charities linked below. If you are a winner and contribute, please ask recipient to notify me of the amount so I might match the first $100.

  1. Michael J. Fox Foundation for Parkinson’s Research

https://www.michaeljfox.org/

Click on “Get Involved”

  1. Guilford County Animal Shelter

       http://www.myguilford.com/animal-services/animal-shelter/

Look under “Donate to the Animal Shelter.”

  1. Guilford Senior Resources

http://senior-resources-guilford.org/

Look under “You Can Help”

  1. Jo Cline Memorial Endowment

https://www.gtcc.edu/community-engagement/cline-observatory/support-the-observatory-jo-cline.php

 

Step 2: Check your written answers to the answers below. If your answer is correct, give it a check mark.

Step 3: If your answer is wrong, put a small X.

Step 4: If you think my answer is questionable, write yourself a note, do the research and let me know if I’ve erred. Thanks in advance,

 

You are welcome to play with us during the next live broadcast of

“Let’s talk astronomy” this coming Monday beginning at 8 am eastern US time on Periscope.

Periscope is a live video streaming app for Android and iOS available in the App Store.

On Monday, April 22, 2019, our Astronomy Challenge was about interplanetary dust.

The questions are given above, the correct answers and the winners are given below.

Congratulations to all winners and thank-you to all participants.

Play the Astronomy Challenge live on Periscope’s “ Let’s talk astronomy” 8 am (Eastern US time) on Mondays.

Correct Answers……..Periscope Winners:

 

  1. Within 5 %, what percent of stars are found in double or multiple systems? ANSWER: 85%……..@joelschultz

 

  1. The companion star of Sirius is in what stage of evolution? ANSWER: White dwarf ……@Pircano.   White Dwarfs are usually about the mass of the Sun but as small as the Earth.

 

  1. The companion star of Procyon is in what stage of evolution? ANSWER: White dwarf …… These are stars that have stopped nuclear fusion

 

  1. The A component of the Alpha Centauri system is a near twin of what other star? ANSWER: The Sun
  2. What’s unique about “alpha Cen C”?    ANSWER: Proxima,….@Pircano This is a faint, red dwarf and is the closest star to our solar system.

 

Next challenge: variable stars

 

If you find a mistake, please let me know.

 

Thanks goes out to all participants,

and

Congratulations to everyone who got one right.

 


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