Trolligi's addons

[Trolligi 112477]

This small addon adds the small, young cluster [DBS2003] 75, along with the compact H II region in it, ESO 95-1, located 18,300 light years away in the constellation of Crux.

DBS75, with NGC 3603 in the background

[DBS2003] 75.zip

(618.6 KiB) Downloaded 407 times

[Trolligi 112477]

This small addon adds the intermediate mass X-ray binary Scutum X-1. It is composed of a neutron star sucking material away from a luminous Mira variable.

Scutum X-1.zip

(457 Bytes) Downloaded 429 times

[Trolligi 112477]

scroll down a bit to see my new version

[Trolligi 112477]

This small addon adds 7 stars to the irregular galaxy Sextans B, two red supergiants and five central stars of planetary nebulae.

Sextans B.zip

(586 Bytes) Downloaded 431 times

[Trolligi 112477]

This small addon adds 5 gas-rich ultra-faint dwarf galaxies to the Local Group. The paper for all this is https://arxiv.org/abs/1908.00438.

gasrichufds.zip

(466 Bytes) Downloaded 397 times

[Trolligi 112477]

This small addon adds the binary star BM Cassiopeiae, one of the weirdest eclipsing binaries I'm aware of. It contains an """""A-type""""" supergiant orbited by a """""G-type""""" supergiant with about half its mass, every 200 days, located almost 12,000 light years away in the constellation of Cassiopeia.

BMCas.zip

(533 Bytes) Downloaded 379 times

[Trolligi 112477]

This addon adds several star-forming regions in the Serpens-Aquila Rift, all about 1400 light years from the Sun, which include:

Westerhout 40
Serpens South
Serpens Main (and the clusters within it, SVS 2 and SVS 4)
MWC 297 Asociation
Serpens NH3

(as well as a background post-AGB star)

I made this addon because I think everything here is quite underrated, and it shouldn't be given how close it is to us.

A lot of the areas are quite underpopulated (most notably Serpens South), so I may expand on this in the future. I will edit the post if I update it, and there is a changelog at the bottom.
Also a lot of the stars in this addon are very dim so you will need to either use celestial browser or look in the code.

Serpens-Aquila Rift.zip

(8.34 MiB) Downloaded 404 times

Changelog:

Spoiler

June 22 2022: Initial Release, d. 36 times
August 1 2022: Added Serpens NH3 and [OMP2009] 85, a bg post-AGB star

[Trolligi 112477]

This is a joke system filled with some of the most recent memes.

Trolligi's stupid solar system.zip

(1000.85 KiB) Downloaded 395 times

[Trolligi 112477]

This ever-redone addon adds the Leo P galaxy, a small irregular star-forming galaxy located about 5.3 million light years in Leo. Leo P is part of the Antlia-Sextans group of galaxies.

Thanks to Gurren for most of the work making all the stars.

Latest version Aug 2023


Inside of Leo P

Leo P.zip

(739.43 KiB) Downloaded 224 times

[Trolligi 112477]

This addon has been waiting for 7 months, now it's finally out. It adds many stars which were thought to be Wolf-Rayets but in reality were not. Bonus: They are textured! Thanks to Gurren for the textures.

MR 22, a post-AGB star with a nebula once thought to be a Wolf-Rayet star

WR impostors.zip

(102.81 MiB) Downloaded 411 times

[Trolligi 112477]

I made the fast rotating stars from the KSw survey, known as pumpkin stars. And well... they really aren't. Revised paramaters have shown them to be much smaller than previously thought which makes them really not oblate.

Even the most oblate of them, KSw 71, shown here, is only slightly oblate. It's not a "pumpkin star" at all and neither are any of the others, all of which are almost completely spherical.

kswrotators.zip

(987 Bytes) Downloaded 346 times

[Trolligi 112477]

The Serpens-Aquila Rift Star-Forming Regions addon has been updated: viewtopic.php?p=158100#p158100

[Trolligi 112477]

GA-MSCHIIR (Galactic Anticentre Massive Stars, Clusters and H II regions) is a small project that is similar to DHMSA-CHIIR, except that it's on the other side of the galaxy. I will add more stuff as time goes on.

Stuff:

The S235 Complex, a star forming region centered on the nebula Sh 2-235 and nearby nebulae. There are many massive stars here.

S235 Complex.zip

(6.72 MiB) Downloaded 404 times

IPHASX J052708.2+383113, a tiny 2 ly wide reflection nebula which surrounds a tiny cluster, of which only 1 star, an intermediate-mass protostar (I'm assuming), is on simbad. No image required since it's literally a star encased by a shell (the closest I can get to what it actually looks like, probably).

IPHASX J052708.2+383113.zip

(16.61 KiB) Downloaded 340 times

IC 466, a very dense nebula containing the Be-type star PDS 241.

IC 466.zip

(4.08 MiB) Downloaded 388 times

The Tribble Nebulae, two nebulae (Sharpless 211 and 212) in the constellation of Perseus, housing several massive stars each.
(Sh 2-212 and 211 respectively, mostly to scale)

Tribble Nebulae.zip

(3.12 MiB) Downloaded 364 times

The CB54 molecular cloud, a small and distant molecular cloud in Canis Major, containing two main young stars. Two other stars also illuminate reflection nebulae around the molecular cloud. (There's actually a southern molecular cloud but since it's completely starless I decided not to add it)

CB54.zip

(1.94 MiB) Downloaded 89 times

This other thing is needed if you want it compatible with nussun's OB associations addon.

ppp-GAMSCHIIR-patches.zip

(768 Bytes) Downloaded 331 times

[Trolligi 112477]

This addon adds SNR G353.6-0.7, a supernova remnant containing what remains of an ancient binary system of an aging, now-dying red giant and an accreting neutron star. Now the old red giant is shedding its outer layers and turning into a planetary nebula via a hot post-AGB star.

SNR G353.6-0.7.zip

(128.52 KiB) Downloaded 353 times

[Trolligi 112477]

I updated the addon with some jets from the post-AGB star which I forgot to add.

[Trolligi 112477]

I released IPHASX J052708.2+383113 in GA-MSCHIIR

[Trolligi 112477]

I released IC 466 in GA-MSCHIIR

[Trolligi 112477]

I released the Tribble Nebulae in GA-MSCHIIR

[Trolligi 112477]

This addon adds two planetary nebulae from the "Ou" series, of which there are 6 in total. However two of the six (Ou 1 and Ou 4) are not PNe and for another two I could not find enough information to make it and its central star in Celestia.

So this addon adds Ou 2 and Ou 5. Ou 5 is noteworthy as it is a post-RGB nebula, not a post-AGB one, meanwhile Ou 2 is a pretty regular planetary nebula.

Also for Ou 5 I guessed the colour. I could not find its true colour anywhere. I also guessed the temperature for Ou 2's central star, based on the D0 spectral type temperature. I used several relations to work out its parameters as I did not have a v-band magnitude value, only a G-band one.

Ou 2 (left) and Ou 5 (right) to scale, and oriented in the way they would be seen from Earth

Ou PNe.zip

(11.34 MiB) Downloaded 338 times

[Trolligi 112477]

This post will be for the rest of my protoplanetary nebulae and post-AGB star addons.


3 hot post-AGB stars and their nebulae

This addon adds 3 hot post-AGB stars and their nebulae. Lmao
It adds V886 Her, LS 5112 and StHa 161.

V886 Her, LS 5112 and StHa 161's nebulae to scale.

V886 Her.zip

(743.46 KiB) Downloaded 289 times

LS 5112.zip

(76.75 KiB) Downloaded 301 times

StHa 161.zip

(66.48 KiB) Downloaded 279 times

Very mid simulation of Hen 3-1475
This is the best I could do for the PPN Hen 3-1475. Idk how to make it so that the jets are not facing towards earth smh

This is what it looks like when you go to it from Earth. See what I mean?

Other angles:

Hen 3-1475.zip

(1.64 MiB) Downloaded 260 times

Red Rectangle Nebula
This addon adds the Red Rectangle nebula as well as its central binary star which of course contains a post-AGB star.

Red Rectangle.zip

(6.87 MiB) Downloaded 315 times