I Database of Galaxies and their parameters

AI Thread Summary
A user seeks a comprehensive database of galaxies, including their masses, types, black hole masses, and dark matter content, for personal research. They express that accuracy is more important than the recency of the data. A suggestion is made to refer to a specific product that resembles a periodic table of galaxies, which may contain the desired information. The discussion emphasizes the need for reliable sources rather than outdated data. The inquiry highlights a gap in accessible resources for hobbyists interested in astrophysics.
vinven7
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HI,

I am looking to find a table of galaxies, their masses, types, black hole mass and dark matter content. Does anyone know if such a place exists anywhere on the internet? I'm trained in physics but is not a physicist - more a hobbyist. Any suggestion that you might have will be greatly appreciated.

Thanks
 
Space news on Phys.org
How recent?
 
Bystander said:
How recent?

As long as there is no reason to think that the data might not be accurate, the age should not matter.
 
https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
Why was the Hubble constant assumed to be decreasing and slowing down (decelerating) the expansion rate of the Universe, while at the same time Dark Energy is presumably accelerating the expansion? And to thicken the plot. recent news from NASA indicates that the Hubble constant is now increasing. Can you clarify this enigma? Also., if the Hubble constant eventually decreases, why is there a lower limit to its value?
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