He used a large telescope with a 100-inch diameter — larger than ones that were available to Shapely and Curtis — at Mount Wilson in California and resolved that the spiral nebulae had structure and stars called Cepheid variables, like those in the Milky Way. (These stars change their ...
There are no Hα nebulae. There are HII nebulae. They emit the Balmer series. The net color is purple. fmeschia likes this #3 BQ Octantis Voyager 1 Posts: 10,252 Joined: 29 Apr 2017 Loc: Nova, USA Posted 09 January 2025 - 09:34 PM They are only red because of the capture ...
It's pretty likely that Omega Centauri is the largest globular cluster in the Milky Way. At 10 million stars, it's much bigger than most, which have more like a million stars. Also, it has multiple populations in it and possibly a central black hole. It may be that Omega Centauri is ...
For farther stars, other methods involving luminosity are used. Globular Clusters and Spiral Nebulae Around the time that Kapteyn published his model of the Milky Way, his colleague Harlow Shapely noticed that a type of star cluster called a globular cluster had a unique distribution in the sky...
Results of linear stability analyses are presented for Wolf-Rayet-type central stars of planetary nebulae. Such objects are found to be strongly unstable towards radial pulsations, even at high temperatures above 10^5^K. The instabilities are conjectured to be important for the presence of high ...
STARS: CARBONSTARS: EVOLUTIONISM: PLANETARY NEBULAESTARS: EMISSION-LINEThe characteristics of the spectra of weak emission line stars (WELS) are found to be very similar to that of [WC]-PG1159 and PG1159 objects. On the basis of the spectra we find 31 WELS central stars of planetary ...
a C11. Now I own the Edge versions of 8 inch, 11 inch, and 14 inch scopes. I am used to seeing dust lanes in galaxies, thousands of individual stars in globular clusters, good color and separation from double stars, and even some vivid color from some nebulae, especially with my C14...
Where are newly formed stars found in a spiral galaxy? Are most comets near the Oort cloud and Kuiper belt? When will the Milky Way and Andromeda Galaxies collide? What gave the galaxy its distorted shape according to the Hubble Telescope? Are nebulae and molecular clouds the same? Is the...
“With hundreds of thousands of nebulae, each containing thousands of millions of suns, the odds are enormous that there must be immense numbers which possess planets whose circumstances would not render life impossible,” Churchill concluded in his essay. He wrote these words on the eve of World...
Celestron C14 edge: A It is every bit as good as my C11 edge, but bigger. Some of the views I have seen of the planets are the best I have ever seen. It’s also great for globular star clusters, double stars, and quite a few nebulae. ...