Trolligi's addons

[Trolligi 112477]

This addon adds the Eagle Nebula (as well as the Pillars of Creation), and some of its most luminous O and B-type stars. This addon was made with Lux H.M.T.. The distance to the Eagle Nebula is 1706 parsecs.

If you have Nussun's OB associations addon, you need to put that in a separate folder titled "ob-associations" or something, doesn't matter that much, as long as it starts with any letter except z.

I may add more dark nebulosity below the pillars of creation sometime

Eagle Nebula

zzz-Eagle Nebula.zip

(5.06 MiB) Downloaded 164 times

[Trolligi 112477]

This addon adds the Trifid Nebula, and its brightest stars. Once again this addon was made with Lux H.M.T.. The distance to the Trifid Nebula is 1235.7 parsecs.

If you have Nussun's OB associations addon, you need to put that in a separate folder titled "ob-associations" or something, doesn't matter that much, as long as it starts with any letter except z.

Trifid

zzz-TrifidNebula.zip

(7.41 MiB) Downloaded 162 times

[Trolligi 112477]

This addon adds almost all bright stars within the Cat's Paw Nebula, also known as NGC 6334. This addon was originally made by Lux H.M.T. and expanded on by me. The distance to the Trifid Nebula is 1750 parsecs.

The addon folder's name starts in zzz so it loads last, just in case there is any other addon that adds this object or stars in it, this will override it

There's also a lot of dust in Cat's Paw which I didn't bother adding

Cat's Paw

zzz-Cat's Paw.zip

(10.99 MiB) Downloaded 122 times

[Trolligi 112477]

This addon adds the nearby Ring Nebula as well as its central stars. The addon was made with Lux HMT.

I don't think the orientation of the nebula ingame is exactly correct though

Ring Nebula

Ring Nebula.zip

(1.65 MiB) Downloaded 186 times

[Trolligi 112477]

This addon adds the nearby Bug Nebula as well as its central star. The addon was made with Lux HMT.

I can confirm that this time the orientation of the nebula is correct

Bug

Bug Nebula.zip

(1.82 MiB) Downloaded 162 times

[Trolligi 112477]

Please redownload the Bug Nebula if you've already downloaded it - I uploaded a new version with the correct orientation of the nebula

Added after 3 hours 42 minutes:
Also redid the Ring Nebula - redownload that if you'd like

[Trolligi 112477]

This small addon adds the GAFO Region, a small star-forming nebula, located in the Virgo Cluster. Its projected distance from NGC 4438 is almost 60,000 light years, meaning it's basically in intergalactic space. A star cluster inside the nebula has also been detected but due to floating point errors I can't include any fictional stars in the star cluster for this addon.

Ingame, the GAFO region is quite a bit further away from NGC 4438 because GAFO is 17 Mpc from Earth and NGC 4438 ingame is not


Pretend that there's a star cluster here

GAFO Region.zip

(2.38 MiB) Downloaded 118 times

[Trolligi 112477]

This addon adds SECCO 1, or at least its most massive and bright stars. SECCO 1 is a blue blob, a small intergalactic hydrogen cloud that is now undergoing starburst. These hydrogen clouds were probably stripped off a nearby galaxy as it entered the Virgo cluster, where SECCO 1 is located.

SECCO 1 is made up of two parts, a main body, containing most stars, and a secondary body.


SECCO 1 with magnitude limit at maximum. Only the brightest O stars are shown

SECCO 1.zip

(1.59 KiB) Downloaded 103 times

[Trolligi 112477]

This addon adds some star-forming regions within the Leo Ring, a huge 650,000 light year wide ring of intergalactic gas surrounding the Leo Group of galaxies, described in https://ui.adsabs.harvard.edu/abs/2021A&A...651A..77C/abstract . It's all estimated to be about 11 Mpc away.

The addon adds several nebulae, 7 real known stars (with estimated parameters from mass, age and metallicity) as well as several thousand randomly generated stars to visualise known/predicted clusters around these 7 real stars, most of which are very massive O-type stars. (Credits to Nussun's star cluster generator for the clusters)

Some of the star-forming regions

Leo Ring Star-Forming areas.zip

(10.36 MiB) Downloaded 118 times

[Trolligi 112477]

I released the CB54 molecular cloud in GA-MSCHIIR

viewtopic.php?p=158690#p158690

[Trolligi 112477]

This addon adds the entire Corona Australis Molecular Cloud, as well as most of its young stars. The cloud is located at about 149.4 parsecs away.
The cloud also contains a very young star cluster, the Coronet Cluster.

CrA cloud

Download

Corona Australis.zip

(20.76 MiB) Downloaded 103 times

[Trolligi 112477]

This addon, made mostly by Lux HMT and finished by me, adds the Cat's Eye Nebula, a planetary nebula in Draco.

Unfortunately the nebula is not in the exactly correct orientation

The nebula

Cat's Eye Nebula.zip

(2.34 MiB) Downloaded 114 times

[Trolligi 112477]

This addon adds the post-AGB (likely binary) star U Equulei, located about 4 kpc away. U Equulei has been brightening over the last 3 decades, which has led to some speculation as to why. The most likely explanation is that U Equulei has been accreting material from a circumbinary disk recently, leading to increased luminosity.

Watch my most recent YouTube video to learn more: https://www.youtube.com/watch?v=CHuAxa3dz10

U Equulei with disk

U Equulei.zip

(5.63 MiB) Downloaded 80 times

credits to Cubic for the corona effect

[Trolligi 112477]

This addon adds 714 real stars in NGC 3109, a small one-armed spiral galaxy on the edge of the Local Group. It also adds many HII regions and planetary nebulae within the galaxy.

Credits to Nussun for the red giant, red supergiant, AGB and carbon star models and textures

NGC 3109

NGC 3109.zip

(32.92 MiB) Downloaded 53 times

[Trolligi 112477]

This addon adds the planetary nebula DS 1, located about 2,700 light years away in Vela. The nebula houses the triple star system KV Velorum, composed of a tight binary of a blue subdwarf and red dwarf, orbited by a relatively massive brown dwarf every 29.5 years on an eccentric orbit.

DS 1

DS1.zip

(1.41 MiB) Downloaded 29 times

[Trolligi 112477]

This addon adds 21 binary systems containing neutron stars described by El-Badry et al. 2024 (https://arxiv.org/abs/2405.00089), including the stellar system known as Gaia NS1.

Four such systems from 20 AU away. Gaia NS1 is the top right system

Gaia DR3 neutron star binaries.zip

(3.32 MiB) Downloaded 44 times

[Trolligi 112477]

This addon adds 738 blue stars detected by the Century Survey Galactic Halo Project, mostly within the galactic halo, although some are very close and some are located dozens of kiloparsecs from the Sun, in intergalactic space.

CHSS.zip

(31.04 KiB) Downloaded 6 times

[Trolligi 112477]

Re-uploaded the CHSS stars file since I noticed a problem with the declinations listed

[Trolligi 112477]

This addon adds 72 real stars in the Sagittarius Dwarf Irregular Galaxy, consisting of 17 carbon stars, 45 red giants, 1 very weird AGB star, and some massive young stars, including a G-type red supergiant. There is comparatively little information on the stellar population of this tiny galaxy in general.

For the full experience, head to galaxies.dsc in your Celestia download and change Sag DIG's code to this:

Code: Select all

Galaxy "Sagittarius DIG:ESO 594-4"
{
        Type  "Irr"
        RA           19.4997
        Dec         -17.6781
        Distance   3693396.006 # rgb
        Radius          1514.85514
        AbsMag        -11.67
        Axis    [ -0.4219  -0.8976  -0.1275]
        Angle    111.1772
        InfoURL  "http://simbad.u-strasbg.fr/sim-id.pl?Ident=Sagittarius DIG"
}

Changelog:

Spoiler

2024/11/10 - Released addon

credits to cubicApoc for the effects around SagDIG V1, the very particular AGB star

le galaxy

Download

Sag DIG.zip

(6.56 MiB) Downloaded 5 times