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Thread: Betelgeuse Is Still Dimming! And We Have the Pictures to Prove It

  1. #1
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    Betelgeuse Is Still Dimming! And We Have the Pictures to Prove It

    Near the end of 2019, astronomers watching the red giant Betelgeuse noted how much the star had dimmed, continuing to steadily fade for months.* Itís a variable star, and itís known to get dimmer and brighter, but the big surprise is that itís still continuing to dim, recently passing magnitude 1.56 and still getting dimmer. …
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  2. #2
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    Aug 2006
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    Why is this graph showing the brightness increasing?

    It's gone from 1.0 up to .38.

    Is that what they mean by "normalized"?

    The article says it's passed 1.56 and climbing - yet that's off the top of the chart.

  3. #3
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    Quote Originally Posted by DaveC426913 View Post

    Why is this graph showing the brightness increasing?

    It's gone from 1.0 up to .38.

    Is that what they mean by "normalized"?

    The article says it's passed 1.56 and climbing - yet that's off the top of the chart.
    If I interpret that graph correctly, it is the intensity itself rather than the inverted logarithmic rendering of that intensity that is our familiar magnitude scale. They chose to normalize it to 1.0 about the middle of October.

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