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Forum » SpaceEngine » Space Journeys » Challenge: The Biggest Star in SpaceEngine (Can you find the biggest star?)
Challenge: The Biggest Star in SpaceEngine
anonymousgamerDate: Sunday, 28.12.2014, 03:45 | Message # 151
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I found like a 15.9 AU star before but that may have been changed now, sadly. I'll have to do some more star hunting later. Some spiral galaxies seem to have a LOT of red giant stars.




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lopikoDate: Sunday, 28.12.2014, 10:44 | Message # 152
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This one beats 3 previous ones. Not significantly but it does.


Attachments: 4574182.jpg(308Kb)
 
FireintheholeDate: Sunday, 28.12.2014, 15:10 | Message # 153
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Quote lopiko ()
This one beats 3 previous ones. Not significantly but it does.

This one is a little bigger smile

Added (28.12.2014, 14:10)
---------------------------------------------
Look at this bad boy. 1718 Solar radii, or 15.986 AU!



RS 0-7-1160923-284-230-0-0-86




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BalakeDate: Tuesday, 30.12.2014, 07:00 | Message # 154
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Just flying around and found a 13.525 AU red hypergiant on the outer edge of a procedural galaxy smile



RS 0-6-207608-330-506-0-0-72


Edited by Balake - Tuesday, 30.12.2014, 07:03
 
kierkegaard47Date: Thursday, 01.01.2015, 18:16 | Message # 155
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Fireinthehole, I believe I can outdo that by the staggering amount of 0.001 AU!

RS 0-0-0-345-4095-0-0-297

15.987 AU.

(version .972 )

edit: found another still larger one,

RS 0-0-0-1604-25175-0-0-46

15.992 AU, 1718.7 solar radii

Attachments: 8364552.jpg(107Kb)


Edited by kierkegaard47 - Thursday, 08.01.2015, 22:48
 
NickWaterfallDate: Tuesday, 06.01.2015, 10:41 | Message # 156
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What's the best way to find big hypergiants? Hypergiants are easy to find now, but there's not much difference in brightness between a "small" hypergiant and the largest ones.
 
kierkegaard47Date: Thursday, 08.01.2015, 23:04 | Message # 157
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Quote NickWaterfall ()
What's the best way to find big hypergiants? Hypergiants are easy to find now, but there's not much difference in brightness between a "small" hypergiant and the largest ones.


I don't know what the 'best' way is, but I can tell you how I found mine.

Until this version, I searched for them by observing a galaxy from far away and then slowly increasing the border magnitude so that only the very brightest stars of the galaxy became visible, and then hoping would be a red hypergiant between them.

In this newest release, the star browser seems to have improved filters so I'm using that now. It has been my experience that the very largest stars are all red hypergiants of spectral class M0, so I choose 'red giant' for the main star under filter settings and spectral class M0. This allows to increase the search range significantly, on my computer up until about 70.000 LY without the computer crashing on it (executing the search takes a while though). After the search is complete, I sort the results in descending luminosity. I then pick the brightest one that is a single star system (I tried to include that as a filter criterium but that didn't seem to work), as combined systems can have a higher luminosity without the main star being extremely big. I'm not sure which search results are omitted when they exceed the 10.000 limit but I suppose the brightest are all kept.

Still it might be that even larger stars are not found because they fail some of the criteria in this search method, so if there are better methods I'd like to know too....
 
FireintheholeDate: Thursday, 08.01.2015, 23:16 | Message # 158
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I cruise around in the halo of the galaxy and look around for small red dots, usually hypergiants smile




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Atheist101Date: Friday, 09.01.2015, 16:57 | Message # 159
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Here's one. Its 15.939AU, seems like its not the biggest but pretty big.

Added (09.01.2015, 15:57)
---------------------------------------------
I find them by either using the star search (shift+F3) looking for MO O, or by flying up above the galaxy (or below) far enough that there isn't many stars in sight. Then most that i click on are some form of giant/hyper giant. Either way seems to work for me. I have no problems finding them. The latter way i usually stick to disk/spiral galaxies. Using the star search you can be pretty much any where.

Attachments: 2967336.jpg(172Kb)
 
Pds314Date: Friday, 09.01.2015, 21:30 | Message # 160
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I suspect that 16 AU is probably the biggest size for M0 0 Red Hypergiants.
 
NickWaterfallDate: Wednesday, 14.01.2015, 13:10 | Message # 161
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I did a massive search for big M0 0 hypergiants and have come to the conclusion that the largest possible hypergiant is 15.992 AU.
I found dozens of 15.992 AU stars, but not a single one bigger than that.

M1 0 hypergiants are smaller, biggest M1 0 hypergiant is around 12.200 AU.
 
kierkegaard47Date: Wednesday, 14.01.2015, 23:31 | Message # 162
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NickWaterfall,

I had done the same as you several times and with the same result. I then posted just one of them because I simply saw no sense in mentioning a lot of them, as I too believed that was the biggest possible size.

However, I just found a 15.993 AU star:

RS 0-0-0-442-3965-0-0-379

15.993 AU
1718.7 solar radii.

So, perhaps this matter is not settled after all smile

(Though I suspect that if even bigger stars exist, those will be increasingly rare).
 
Liu0892Date: Sunday, 18.01.2015, 06:53 | Message # 163
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Did I win?
Attachments: 8673259.jpg(327Kb)
 
relox84Date: Sunday, 18.01.2015, 10:42 | Message # 164
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Liu0892, your star only has a diameter of .195 AU (in fact, it's not 20.99 AU but 20.99 solar diameters), so this is pretty much the smallest star ever posted on this thread.
 
JJJacksonTylerDate: Monday, 19.01.2015, 20:23 | Message # 165
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SO - I was using this thread to find some interesting systems to look at. I was looking at random and found a star with
a diameter of 12.081. I had this page open - I was simply following points of light that didn't disappear after considerable
distancing. It is a red hypergiant. Here you go?




Edited by JJJacksonTyler - Monday, 19.01.2015, 20:25
 
Forum » SpaceEngine » Space Journeys » Challenge: The Biggest Star in SpaceEngine (Can you find the biggest star?)
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