DeepSkyVideos - 2019-12-04
Dr Meghan Gray discussed Messier 12 (aka NGC 6218) and its treacherous path through the galaxy. More links and info in full description ↓↓↓ More Messier videos: http://bit.ly/MessierObjects Why is the mass function of NGC 6218 flat? - https://sci.esa.int/s/ApPrzgA Objectivity: http://bit.ly/Objectivity Deep Sky Videos website: http://www.deepskyvideos.com/ Twitter: https://twitter.com/DeepSkyVideos Facebook: http://www.facebook.com/DeepSkyVideos More about the astronomers in our videos: http://www.deepskyvideos.com/pages/contributors.html Supported by the University of Nottingham Back us on Patreon: https://www.patreon.com/deepskyvideos Video by James Hennessy and Brady Haran
Is cluster flux a term used in astronomy? If not, it should be.
I'm STEALING that...😊
RocKITEman _ 2001 bruh, to get an exclusive rights to use this phrase wil be a huge clusterflux! 😎
"Only 4.5 billion years." One of the reasons I like astronomy so much. The huge distances, dimensions, masses, speeds and time scales. Mind boggling.
@RLB Where is that quote from? I've seen it a few times recently.
@Random Guy The Hitchhikers Guide to the Galaxy.
@RLB oh, thanks
@Random Guy There's actually a character called Random in one of the books (it's a trilogy in five parts ;) ). But I don't think it's you.
@RLB Who knows, maybe it is.
Dr Gray is amazing. And it is great to get a chance to see how her Christmas cactus is doing! 🎄🌵
This amazing, thank you!
That was a lot more interesting than I thought it would be! Brava!!
Interesting and I like her voice. Thanks for the info.
Learned something new. Thank you.
Heck, I've missed you, Doc. it's been too long.Thankfully this vid popped up in my recommends
Great episode! I love complicated graphs, so this is pretty satisfying. Brady, I'd love to watch a series where you hit up the professors in your orbit and ask them, "Give me a tour of a complicated graph, and tell me why it's interesting."
Dr. Gray, 7 years ago there was an event in m95. You covered it and your videos were great. What have we learned since? Are there any images?
Wonderful video, thank you. I find it fascinating that M12 will be stripped of it's low mass stars due to those gravitational forces near the centre of The Milky Way.
M12 was one of the first globular clusters I saw as a child with binoculars. I couldn't believe how many points of light I could see - especially in hindsight knowing I need to wear glasses these days. M13 was the only one I remember seeing with just my eyes.
This reminds me of the mechanism in which a new star blows away the lighter material out of the just-formed planetary system, and only the heavy planets remain.
Awesome series, thank you all so much
15mins late damn. Love all the channels started watching way back in the day.
🎉 deep sky videos 🎊
Thank you for your existence on the internet my grandkids and I enjoyed every one of your televised videos with different hosts...
I wanted to tell deep space videos that my grandkids and nieces that I introduced to your network they really learn unlike American scientists they really learn watching your videos they can regurgitate months later after watching and learning... ...😃🤔😃
When are we going to get the Open Cluster M39?
Just 4.5 billion years. An instant, a twinkling of an eye.
Yay, it's Dr. Meghan Gray! This is what I consider fun. Fun, natural fun.
Hi absolutely LOVE this channel! If these low mass stars are becoming part of our galactic disk, do they have a different composition than our native stars? Can this be evaluated? Assuming this is not a characteristic unique to this galaxy, does this change possible dating and analysis of distant galaxies? You guys are awesome and inspiring!!
Interesting video! Thanks!
Interesting stuff. Meghan's easy to listen to. :)
I'm here before 200 views, nice
I would like to know how parallax arc seconds (parsec) came to be the standard unit for measuring distances in the Milky Way Galaxy?
Why starting at 1:16 do you refer to M52 instead of M 12. Was that just a mix up?
Probably just a mix up. Doesn't matter much anyway since the difference is only 4
@A. Horse 52 - 12 = 4?
50,000 - 18,500 = 50,000
@Pronto No, but 5 - 1 = 4
LOL! M52 is an open cluster in Cassiopeia, not a globular cluster in Ophiuchus.
99.99 % of this goes over my head , but I still find it fascinating and look forward to these talks . Please don't stop .
The Cluster of Doom!
Last!
Poor astronomer, another boooooooooring star cluster :D
The globula clusters are the more beauty object tha I have seen in my telescope. Amazing!!!!
The sheer beauty of the photo left me awe struck.
Perhaps you said in the video and I missed it, but what is the period of its galactic orbit?
Awesome!
awesome!
Prof. Gray is one of the greatest science communicators of our time.
when are you going to talk about tidier objects
Dr. gray is awesome.
Hello, im not an astronomer, but couldnt the composition of the cluster be explained simply by it being relatively young?
thanks!
“It probably has only 4 1/2 billion years left before it is destroyed” why did I feel sad when you said this?
What does the CM diagram look like?
Thanks
Those time scales never fail to supernova my mind!
Talk about "MIND BLOWN". 😊
How good are the University of Nottingham engineering and science courses?
Still no M39 :-(
What do you do with a globular cluster, early in the morning?
Press F for M12.
How many do we have left?
She's getting old
M12. NGC 6218.
Why can't we just name these things human names?
"I'll be looking at Bob in the sky tonight" or "there was a massive explosion in Steve yesterday"
🤔
I wonder how M12 was formed in the first place....I need to do some research on this
globular star clusters are understood to be the product of dense star forming regions called super star clusters where the mass distribution was sufficient to become gravitationally bound. There are some young active star forming regions which meet these conditions today in particular NGC 2070 at the heart of the Tarantula nebula in the Large Magellanic cloud. An example closer to home that is native to the Milky Way and thus orbits within our disk is Westerlund 1. These clusters were far more common in the Early universe and thus are preferentially very old. Moreover since native globular clusters are embedded within the galactic disk they all blur into the milky way band so the ones orbiting in the galactic halo are almost certainly captured objects stolen from galaxies the milky way has "eaten".
Basically a starforming region becomes an open star cluster if its mass is too low to stay gravitationally bound while clusters that are massive enough to be gravitationally bound will probably develop into globular clusters
Alex V - 2019-12-04
"The perverse way that astronomers measure brightness" shots fired, I love it