Multiple times have I run across "Red Giant" stars that are smaller than Sol. Similarly over Xmas I found a system of B-class stars which had radii over 400 times Sol, yet were classed as normal stars.
OK, map is ready. Interesting results:
Indeed, this map seems to pretty much trace the known distribution of neutron stars. I've always suspected the Stellar Forge team was trying to simulate either the Thick Disk or Halo by including a separate population that skews toward older and more evolved stars. Interesting to wonder if the +/- 1K altitude bands are because they wanted those stars away from the galactic plane, or if it's just the third dimension of the exclusion zone "cross".This nicely shows the "corridor" FDev stuck into stellar forge on the z-axis, preventing certain objects from spawning. The blue blob around Sol of approximately 20 stellar radii are likely to be all hand-placed stars. There are two very distinct bands of 20-50 solar radii stars at +1K and -1K; I think this is the same place the 'neutron fields' are located. There is also that band of 50 solar radii stars right on the galactic Y-axis center. The larger radii stars seem to be evenly distributed in the same places as the arms, but I notice a huge gap in the north-west corner. That area is less explored, but is it really that much less explored? Or is it an actual gap of large stars?
I was wondering about that. Given that there's not all that many giant stars in this dataset to begin with, very plausible that a small but dedicated effort would stand out from the background. If that path you drew represents something like the "true" density of giant stars, then there's quite a lot of them still out there to be found.I'm astonished that the path I flew (the upside down L left to the gap) while scanning carbon stars is is still visible in some of your maps.
I'm astonished that the path I flew (the upside down L left to the gap) while scanning carbon stars is is still visible in some of your maps.
That was yours? Cool. Yeah, some of the marks that are on the maps are quite impressive. The few times I've tried specifically to make visible marks, they're hardly noticeable. That's some serious scanning.
I was wondering about that. Given that there's not all that many giant stars in this dataset to begin with, very plausible that a small but dedicated effort would stand out from the background. If that path you drew represents something like the "true" density of giant stars, then there's quite a lot of them still out there to be found.
Well, kind of yeah, but the star at least has to be of proper age for for thatIt is in fact possible to have stars in the "giant" phase of stellar evolution that are still smaller than Sol
Either Stellar Forge is drunk, or else (my suspicion) the abstract evolution model includes relatively frequent occurrence of high mass loss events. One possibility would be mass stripping - but in which case, where is the companion object? Another would be that in say certain metallicity ranges evolution off the main sequence results in dense winds carrying away a large fraction of the starting mass. Either case would be based on real mechanisms, although the endpoint seen here seems physically implausible.Well, kind of yeah, but the star at least has to be of proper age for for that
I mean, how could for example this particular one burn out to it's final stages of evolution for such a short period of time?
Hey. I just wanted to thank you again for the layered Wolf-Rayet maps. A lot of the credit for my first W-R discovery has to go to you.My pleasure. Have fun!
Wow, you scanned 4700 stars before getting bored? I'm not surprised you can still see the pattern!I didn't do it because I wanted to leave a mark. Two years ago I suddenly thought 'let's search for carbon stars'. This 'L' is made of more than 4700 carbon stars I found until I got bored.
The lowest blue line is for white dwarves? It looks very suspicious that there are quite some of them below -100 and almost none above +90. That can't be caused just by the greater popularity of flying to the bottom rather than to the top?New graph, a more granular look at the population density of star types in 10ly high altitude bands
The reason for why the SCA and Dryman's regions have lots of peduncle trees is quite simple. It's the same as why the IOS (Inner Orion Spur) has lots of albulum gourd molluscs - see these maps: these forms of life have rather relaxed spawning restrictions, and their spawning area covers their entire regions. Most often, life inside a region appears in only a smaller part of the region otherwise.Point is ... Carina Arms and Dryman have unusually a lot of space trees ("phenomena"), I stopped to count after couple tens met during a week. I suspect intentional intrusion, for example "close to raxxla there is more life".
Can you make life-density graph AND water planets (giants with water, water worlds, etc) on same picture?
Life-density is "stellar phenomena" and bio signals, maybe "giants with water based life".
The lowest blue line is for white dwarves? It looks very suspicious that there are quite some of them below -100 and almost none above +90. That can't be caused just by the greater popularity of flying to the bottom rather than to the top?