[IGAU Research] Spectral Class Count of Icy Ringed Bodies

  • Thread starter Deleted member 240115
  • Start date

Deleted member 240115

D
Hi folks.

With fleet carriers about to launch, explorers will certainly be on the lookout for systems with one, or more bodies with icy rings.

The Intergalactic Astronomical Union presents the following analysis of 2,925,146 unique systems with at least ONE icy ringed body present.


O​
1​
B​
442​
A​
63147​
F​
304206​
G​
348476​
K​
919560​
M​
1044889​
L​
17228​
T​
10282​
Y​
103​
Other​
216812​
Subtotal​
2708334​
Total​
2925146​
See attached image. (Other) is any spectral class not matching any spectral classes in the chart.



The data largely follows expected behavior of systems based on the spectral class of the primary star.
As we move from hotter (O/B) to cooler ( K/M ) the number of icy ringed bodies increases.
We note an interesting drop off with the brown dwarf (L,T,Y) spectral classes.

Follow up work could be done to sort the count of icy ringed bodies by system mass code (A-H).
Detailed icy ringed body counts of "Other" spectral classes (Neutron, WD, WR, Carbon, etc) could also be obtained.


We'd like to thank our very own @Orvidius for his raw data archives at <https://edastro.com/mapcharts/>, and hope the information presented will be of use to those launching fleet carriers soon.

Additional thanks to the Path Rangers [PTHR] for nudging us to work out the math on this.

o7
 

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Deleted member 240115

D
Thank you!

You can get the raw system counts by spectral class from EDSM: https://www.edsm.net/en/faq/bodies

The spectral classes in the chart posted combine all sub-types

A quick glance at the EDSM chart tells me (approximately)

71,000 O
650,000 B
2.4 million A
4.5 million F
3.6 million G
10.3 million K
19.3 million M
5.1 million L
2.4 million T
1.25 million Y


Excellent work!
Could you tell us please, how many systems of each class (with rings & without) were taken into account initially? Just to understand what the ratio of stars participating in the sample is, not only absolute, but also relative
 
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