- INTERGALACTIC STARS ADDON -
INSTALLATION:
To install the addon you must put the attached file "Integalactic stars.sc" in your SpaceEngine/addons/catalogs/stars folder (create the path if you don't have it).
DESCRIPTION:
The addon cointains 74 catalogued stars that lie in the intergalactic space near the Milky Way. Some of these stars are Carbon stars, Blue horizontal branch stars, Blue stragglers and RR Lyrae variables.
NOTES:
In the classical definition an intergalactic star is a "star that is not gravitationally bound to the galaxy", but here I prefer to define them as "stars that are at least as far as the Milky Way's largest satellite galaxies (the Large Magellanic Cloud, 163.000 ly away, and the Small Magellanic Cloud, 200.000 ly away), without been in either of those". The stars been at least 200 kly away from the Milky Way ensures that they do not pertain to certain galactic streams and that they in fact live in the extreme outer halo or in intergalactic space. Also in the classical definition there could be stars that are currently inside the galaxy but are members of the Hyper Velocity Star (HVS) population (and thus they are gravitationally unbound to the galaxy even if currently residing inside of it). So this addon contains several HVS but not all of them (even if they might reach the appropiate distances in the future if they live long enought). Also this addon includes stars that are bound to the Milky Way but are extremely far away (which would not have been included in the classical definition of intergalactic stars). Also not all the stars in the addon have been ejected from the Milky Way (for example HE 0437-5439 is an intergalactic star believed to have orginated in the Large Magellanic Cloud).
The current record holder for the farthest known intergalactic star from the Milky Way is ULAS J001535.72+015549.6. It's nearly a million light years away, that is 4.5 times the distance to the Magellanic Clouds and 35% the distance from here to the Andromeda galaxy (just in another direction).
IN THE FUTURE:
I will update the addon in the future so it cointains stars closer but still way over the galactic disc to show some stellar streams and other regions of the outer halo.
Stars between 200 kly and 400 kly from the Sun:
85-TARG3
196.000 ly away
Scientific source
HE 0437-5439
200.000 ly away
Scientific source
2MASS J13121645+0834359
202.000 ly away
Scientific source
85-TARG7
202.000 ly away
Scientific source
HiTS 101529-012126
205.000 ly away
Scientific source
CRTS J101056.8-033322
205.000 ly away
Scientific source
2MASS J13340081+0755186
205.000 ly away
Scientific source
2MASS J08483725+1046564
206.000 ly away
Scientific source
2MASS J21423432-0919008
206.000 ly away
Scientific source
2MASS J17075009+2026169
207.000 ly away
Scientific source
HVS 4
209.000 ly away
Scientific source
88-TARG2
212.000 ly away
Scientific source
2MASS J04493236+1824389
212.000 ly away
Scientific source
HVS 12
215.000 ly away
Scientific source
85-TARG15
231.000 ly away
Scientific source
85-TARG2
235.000 ly away
Scientific source
HVS 9
241.000 ly away
Scientific source
2MASS J16322935+0625245
242.000 ly away
Scientific source
2MASS J15093678-0826173
242.000 ly away
Scientific source
2QZ J105544.7-013441
248.000 ly away
Scientific source
2MASS J22223330-1035483
258.000 ly away
Scientific source
2MASS J07200228+3242158
268.000 ly away
Scientific source
85-TARG33
271.000 ly away
Scientific source
HiTS 112524-024348
271.000 ly away
Scientific source
2MASS J12512804+3332253
272.000 ly away
Scientific source
HiTS 112859-034415
271.000 ly away
Scientific source
HiTS 100956+013212
271.000 ly away
Scientific source
88-TARG5
280.000 ly away
Scientific source
HiTS 101243+022118
284.000 ly away
Scientific source
85-TARG34
287.000 ly away
Scientific source
2MASS J11291239+2858152
301.000 ly away
Scientific source
2MASS J10123429-0134408
303.000 ly away
Scientific source
HiTS 110739+012813
303.000 ly away
Scientific source
HiTS 105754-002603
303.000 ly away
Scientific source
2MASS J11291470+2858144
318.000 ly away
Scientific source
2MASS J07120119+3242548
321.000 ly away
Scientific source
HiTS 104009-063304
326.000 ly away
Scientific source
HVS 1
333.000 ly away
Scientific source
2MASS J14324588+1901238
334.000 ly away
Scientific source
2MASS J07215455+3330195
339.000 ly away
Scientific source
HVS 13
342.000 ly away
Scientific source
HiTS 103943-021726
352.000 ly away
Scientific source
HiTS 111106-041718
369.000 ly away
Scientific source
2MASS J17255439+0300265
375.000 ly away
Scientific source
88-TARG7
378.000 ly away
Scientific source
88-TARG100
381.000 ly away
Scientific source
2MASS J08001687+3209491
386.000 ly away
Scientific source
88-TARG3
388.000 ly away
Scientific source
MLS J074237.7+225819
398.000 ly away
Scientific source
Stars beyond 400 kly:
2MASS J17255439+0300265
411.000 ly away
Scientific source
88-TARG8
434.000 ly away
Scientific source
HiTS 105209-043942
444.000 ly away
Scientific source
2MASS J00341245-0131545
464.000 ly away
Scientific source
2MASS J22462850-2726583
473.000 ly away
Scientific source
2MASS J00523741-0336460
473.000 ly away
Scientific source
EPIC 210282473
479.000 ly away
Scientific source
88-TARG34
492.000 ly away
Scientific source
2MASS J09054635+2024381
499.000 ly away
Scientific source
EPIC 210282472
509.000 ly away
Scientific source
HiTS 103601-015451
525.000 ly away
Scientific source
HiTS 102414-095518
525.000 ly away
Scientific source
2MASS J13011847+0029507
525.000 ly away
Scientific source
HiTS 113107+021302
532.000 ly away
Scientific source
2MASS J00363234-2254510
538.000 ly away
Scientific source
HiTS 113105+021319
561.000 ly away
Scientific source
HiTS 113057+021331
561.000 ly away
Scientific source
HiTS 110222-001624
587.000 ly away
Scientific source
HiTS 104054-042827
597.000 ly away
Scientific source
2MASS J08492507+2058552
671.000 ly away
Scientific source
HiTS 104054-042827
714.000 ly away
Scientific source
HiTS 102014-042354
760.000 ly away
Scientific source
ULAS J074417.48+253233.0
776.000 ly away
Scientific source
HiTS 104738+020627
855.000 ly away
Scientific source
ULAS J001535.72+015549.6
893.000 ly away
Scientific source