Exploring Stellar Mass, Luminosity, and Age in the HR Diagram

Поділитися
Вставка
  • Опубліковано 30 жов 2024

КОМЕНТАРІ • 11

  • @allanwrobel6607
    @allanwrobel6607 7 місяців тому

    I think the UK now uses the US Billion/Trillion. (The UK newspaper 'the Telegrapth' adopted the US system around 1970)

  • @garethdean6382
    @garethdean6382 7 місяців тому

    Given that there's a 1:1 ratio for mass:radius at 1 solar mass,but more like 2:1 at10 solar masses, I assume the relationship's not linear but better approximated by a curve?
    The central temperature varies significantly, it seems, in regards to lower mass stars. Is Proxima Centauri running via the exact same processes as our sun? Is that the reason for the 'leg' in the mass:luminosity relationship?
    In metal-poor stars is the CNO cycle greatly impacted? Would Population III stars have a different main sequence at higher masses?

  • @maddie_white
    @maddie_white 5 місяців тому

    Hi, I was wondering if you know the sources for these graphs, particularly the mass-luminosity one or where that data has come from, I was just interested in using it for an assignment. Thanks so much.

    • @JasonKendallAstronomer
      @JasonKendallAstronomer  5 місяців тому +1

      They come from either the source listed in the paper that I referenced, or from Carroll and Ostlie.

  • @InquilineKea
    @InquilineKea 7 місяців тому

    Alpha centauri A seems barely different from the sun, yet this small mass difference causes it to be primarily CNO cycle??

  • @douglaswilkinson5700
    @douglaswilkinson5700 7 місяців тому +2

    Why is there a climate change warning by UA-cam on this stellar astrophysics video?

    • @JasonKendallAstronomer
      @JasonKendallAstronomer  7 місяців тому +4

      Because I mention that as the Sun evolves, it'll get hotter. Then I state that this is not a cause for climate change on human times scales. I opened a note with YT for them to look....

    • @douglaswilkinson5700
      @douglaswilkinson5700 7 місяців тому

      ​@@JasonKendallAstronomerI understand.
      Several of us -- all aerospace engineers & a secured lab mgr meet at a Hamburger Habit on Mondays after work to discuss astrophysics, esp. stellar. Your channel is a welcome addition to our continuing education. Thank you! (Our Northrop Grumman engineer got us in to see JWST just before it was folded up and taken to the barge. It is impressive and huge!)

    • @JasonKendallAstronomer
      @JasonKendallAstronomer  7 місяців тому +1

      Thank you for your kind words! That's impressive you got a chance to see JWST!

  • @motivatedminds1987
    @motivatedminds1987 7 місяців тому

    Is the climate disclaimer a fact or a statement?