- #1
Cerenkov
- 273
- 52
Hello.
The recent discovery of the galaxy SPT0418-47 has piqued my interest.
https://www.almaobservatory.org/en/images/reconstructed-view-of-spt0418-47/
https://en.wikipedia.org/wiki/SPT0418-47
https://www.eso.org/public/archives/releases/sciencepapers/eso2013/eso2013a.pdf
It's my current understanding that galaxies at this red shift are expected to display very different characteristics (star formation rates, rotation, metallicity, size, etc.) to the mature and highly-evolved galaxies in the local universe. But, it appears that certain characteristics of SPT0418-47 seem to buck this expectation.
It occurs to me that I need to discover more about how galaxies are characterised. Then, knowing this I could look at the characteristics of local galaxies and compare them to those distant ones with a better understanding.
So, this prompts me to ask the following questions.
1.
Is finding out about how galaxies are characterised a good first step in understanding the differences between distant, early galaxies and nearby, evolved ones in the local universe?
2.
If so, could I please be directed to some Basic Level resources (links, websites, blogs, etc.) that will help me achieve this?
3.
If not, could I please be guided to a better option?
4.
In the context of this topic, does the word 'Local' refer to the Local Group of galaxies, to the Virgo or Laniakea Superclusters or to a measurement relating to the redshift (z) ?
Any help given would be very much appreciated.
With thanks,
Cerenkov.
The recent discovery of the galaxy SPT0418-47 has piqued my interest.
https://www.almaobservatory.org/en/images/reconstructed-view-of-spt0418-47/
https://en.wikipedia.org/wiki/SPT0418-47
https://www.eso.org/public/archives/releases/sciencepapers/eso2013/eso2013a.pdf
It's my current understanding that galaxies at this red shift are expected to display very different characteristics (star formation rates, rotation, metallicity, size, etc.) to the mature and highly-evolved galaxies in the local universe. But, it appears that certain characteristics of SPT0418-47 seem to buck this expectation.
It occurs to me that I need to discover more about how galaxies are characterised. Then, knowing this I could look at the characteristics of local galaxies and compare them to those distant ones with a better understanding.
So, this prompts me to ask the following questions.
1.
Is finding out about how galaxies are characterised a good first step in understanding the differences between distant, early galaxies and nearby, evolved ones in the local universe?
2.
If so, could I please be directed to some Basic Level resources (links, websites, blogs, etc.) that will help me achieve this?
3.
If not, could I please be guided to a better option?
4.
In the context of this topic, does the word 'Local' refer to the Local Group of galaxies, to the Virgo or Laniakea Superclusters or to a measurement relating to the redshift (z) ?
Any help given would be very much appreciated.
With thanks,
Cerenkov.