I Balmer Absorption Lines in Different Temperature Stars

  • I
  • Thread starter Thread starter Albertgauss
  • Start date Start date
  • Tags Tags
    Absorption
AI Thread Summary
The discussion focuses on the search for real images of Balmer absorption lines in stars at different temperatures, specifically a 10,000° Kelvin star with strong lines and a colder or hotter star showing weak lines. Participants suggest searching for "stellar absorption spectra" on Google Images to find suitable high-resolution images. There is also a concern about proper credit for the images, with participants confirming the need to check for copyright or commons licensing. The conversation highlights the importance of visual resources for presentations in astrophysics. Overall, the thread emphasizes the relevance of Balmer absorption lines in understanding stellar temperatures.
Albertgauss
Gold Member
Messages
294
Reaction score
37
TL;DR Summary
Balmer strong weak absorption lines
Hi all

I couldn't find on the web anywhere but what I'm looking for is a real image of strong Balmer absorption lines for a 10,000° Kelvin star and also a real image of a weak Balmer absorption lines for both a much colder or hotter star that shows how the absorption lines are weak. Does anybody know a resource that may have some images like this? It's for presentation I'm giving.
 
Astronomy news on Phys.org
I can't find a high resolution image, but you're looking for something like this:
719841-13-5ITQ1.png


You can see that the absorption lines for hot stars (near the top) are typically weaker than those for cooler stars (bottom). You can find plenty of images like this by searching for "stellar absorption spectra" in google images.
 
Yes, perfect. I can use that. Is there credit to be given somewhere or is it commons?
 
Albertgauss said:
Yes, perfect. I can use that. Is there credit to be given somewhere or is it commons?
Oof. I didn't think to check. My apologies.
 
Is a homemade radio telescope realistic? There seems to be a confluence of multiple technologies that makes the situation better than when I was a wee lad: software-defined radio (SDR), the easy availability of satellite dishes, surveillance drives, and fast CPUs. Let's take a step back - it is trivial to see the sun in radio. An old analog TV, a set of "rabbit ears" antenna, and you're good to go. Point the antenna at the sun (i.e. the ears are perpendicular to it) and there is...
3I/ATLAS, also known as C/2025 N1 (ATLAS) and formerly designated as A11pl3Z, is an iinterstellar comet. It was discovered by the Asteroid Terrestrial-impact Last Alert System (ATLAS) station at Río Hurtado, Chile on 1 July 2025. Note: it was mentioned (as A11pl3Z) by DaveE in a new member's introductory thread. https://www.physicsforums.com/threads/brian-cox-lead-me-here.1081670/post-7274146 https://earthsky.org/space/new-interstellar-object-candidate-heading-toward-the-sun-a11pl3z/ One...
Back
Top