Massive star formation in the Large Magellanic Cloud
ฝัง
- เผยแพร่เมื่อ 17 ต.ค. 2024
- A massive star is forming in the Large Magellanic Cloud (LMC), and astronomers have a rare visible light view of it.
The LMC is home to LHA 120-N 180B (N180B), a region where massive young stars are forming. Deep within the glowing cloud of L180B is a jet emitted by a fledgling star - a massive young stellar object. This is the first time such a jet has been observed in visible light outside the Milky Way. This jet - named Herbig-Haro 1177, or HH 1177 for short - is nearly 33 light-years in length, and is powered by a forming star 12 times more massive than our Sun.
🔔 Subscribe for more: www.youtube.co...
🖖 Share this video with a fellow space traveler: • Hubble discovers nearb...
🔴 Watch my most recent upload: goo.gl/QbRcE2
🚀 Help me improve the channel by joining the community on Patreon
/ launchpadastro
🚀 Check out Launch Pad merchandise!
teespring.com/...
Disclaimer: Some of these links go to one of my websites and some are affiliate links where I'll earn a small commission if you make a purchase at no additional cost to you.
🐟 From out of town? Help translate this video! - www.youtube.com...
🧭 References:
McLeoud, et al (2018): www.nature.com...
PDF of McLeoud, et al (2018): arxiv.org/abs/...
ESO Press Release: www.eso.org/pu...
✅ Let's connect:
For business inquiries - chris AT christianready DOT com
Twitter - @launchpadastro
Instagram - @launchpadastro
Facebook - / launchpadastronomy
Discord - / discord
📭 c/o Christian Ready
P.O. Box 66
Westminster, MD 21158
United States
Earth
~-~~-~~~-~~-~
Watch next: Solar Orbiter Discovers Surprising new Phenomenon in the Sun
• Solar Orbiter Discover...
~-~~-~~~-~~-~
🔴 Hubble finds a new galaxy hidden behind a globular cluster: th-cam.com/video/yn3WWVzpT_E/w-d-xo.html
yeah hubble!
Christian, you do a great job of narrating complex processes in condensed but clear manner. Learned a lot (again!) -- thanks for the video!
My pleasure, Victor and thanks!
Hey Christian, this was an excellent episode, rich in detail about a fairly narrow (and very cool) subject. I really enjoyed it! Couple of questions of you... how is the mass of a protostar determined? I'm guessing that the Mass-Luminosity relation can't be used here, so is it via gravitational interaction with other nearby objects? Also, how are the accretion and jet-ejection rates determined? Is this observational data or assumed from models?
TBH, I'm not sure, but the paper references A. Caulet, et al (2008). Full reference:
Caulet, A., Gruendl, R. A. & Chu, Y.-H., Young Stellar Objects in the Large Magellanic Cloud: N63 and N180 H II Regions, Astrophys. J., 678, 200-218, 2008
Now that was really interesting Christian, Thank you, Sir.
My pleasure, Ed and thanks!
It blows my mind how someone can notice these stars that are barely noticeable in photos of millions+ of stars. The way you focus in on pics then you see the cloud then still have to point out the star is insane! I love it!
@@LaunchPadAstronomy YES! And it is so awesome
You’ve gotta be a teacher/professor of some kind. Are you? Lol, cause you’re a great teacher. These videos make my day, thank you.
Thank you so much. I do in fact teach astronomy. It's something I've come around to later in life, but I'm glad I'm doing what I enjoy.
Launch Pad Astronomy you could call me a late bloomer too if that’s what you’re getting at 😂👌🍻
This video is great. I was curious about start formation and despite a lot of searching I didn't find anything until this video. Thanks.
My pleasure. I’m glad it helped!
Christian, I love space, always have. I always watched and read everything I could! My daughter Amelia wants to be an Astronaut pretty cool hey! I just sponsored you on Patreon!! So happy for you! Its so inspiring to just keep going thank YOU!!!
Wow, thank you so much, Chris I can't tell you how grateful I am for your support! I'm honored to have you as my TENTH Patron and am looking forward to shouting you out on my next video. Also very happy for Amelia and I hope my content helps her to stay motivated and stay curious. Go Amelia!!!
@@LaunchPadAstronomy I know right I tell her you can be anything you want, that an astronaut is awesome!!🛰🛰
Very grateful to you for showing that stellar nursery!!
Fantastic video. I just found thus tge other day and been watvhing since. Thank you for all your efforts in making these
Thank you, I'm glad to have you along for the ride!
Waittaminnit... how do you expel angular momentum from the centre of an object? Doesn't a particle have to dump its angular momentum to get to the centre in the first place? Wouldn't that mean the star is ejecting its lowest angular momentum constituents?
I think this is a super civilization
Can you clarify, you may have said something that I missed, but is low metallicy a requisite for high mass star formation?
If super novas are comparable to super volcanos the the Large Magellanic Cloud would be Indonesia.
Fascinating as usual!
Thank you, ShinyMike!
God I love your video on high and low mass star formation. I loved how you explained how swirling clouds and filaments initiate the first steps in creating a star. It’s amazing just simply amazing. Now hopefully the gen in telescopes will provide us with more useful data and not just pictures. But to tell you the truth I can’t wait to see the first pictures the James Webber telescope takes. I can barely hold my breath any longer. Then they pushed it back to 2021. It’s no longer 2018 it’s 2021. I am so upset right now. Anywayz good video as always I look forward to seeing Ya .
Thanks, PJ I really appreciate the kind words, man! Yeah, I'm wondering if Webb will make its 2021 launch date. We need that telescope up there like yesterday. Hang in there!
I just found this channel today and love it! ❤
Thank you so much Bobbie, I'm glad to have you along for the ride!
So detailed and easy explanation. Thank you for the video.
Thank you for the kind words. It’s much appreciated!
Canny interesting Chris
Good upload mucka
Excellent info, beautiful imagery.
Thanks!
I had to watch that part at 3:46 multiple times...Seeing things on that scale in motion is mesmerizing.
Hi there, I just found your channel and found it very interesting and well explained 👍
Thank you very much, I appreciate it!
These are very well put together.
i loved your vid on Triangulum. but please speak more about the evolution of LMC than star formation and stuff that are dime a dozen everywhere--and pretty uniform. . In particular explaining how the arms of this barred spiral was yanked off by the Milky Way, and how it is growing new ones now!!!
interesting video, thanks!
💛💚💙💜❤ 👍👍👍
My pleasure!
Launch Pad bro you taught me so much bro, gotta shown other people 🚀
Thank you so much for those kind words, man. Really appreciate it!
5:28 Awesome zoom!
that was fucking breathtaking!
Thank u I found this very interesting and it blows my mind how they know all this when it’s almost and infinite distance away incredible 😉
I’m glad you enjoyed the video. And this is a relatively nearby object:)
Great video and interesting information. 💖
Thanks, I'm glad you enjoyed it!
great content. it will be fun to watch your subscribership grow, it will be fast!
Thank you so much. It's been a wild ride so far!
can't wait to see your 3D simulation video sir.
The jets are probably a natural consequence of the 'vector cross product' in the maths of it all.
What came first, the nutshell or the proto-star?
Great video.
Thanks I appreciate it. The accretion disk and protostar form more or less at the same time. Matter builds up onto the disk which in turn feeds the protostar. Exactly which forms first is still a matter of debate.
Whats up man, nice to be part of your channel buddy...👏👏👏👊like and sub 👨🏽💻
Thanks so much, it's great to have you along for the ride!
@@LaunchPadAstronomy ill be checking out your play list as well, i belive that is not just about Liks and subs but VIEW time as well.👏👊
That area of space is too violent for habitat systems. Our system must be out in large voids between the arms or bands.
Yep, we wouldn't expect life - certainly not complex life - to have much chance of evolving in such an environment. And as it happens, our solar system is in fact somewhere between the galaxy's spiral arms!
4:15 to 4:31
What is, to "form," in this context?
I subscribe to the idea of the linear formation of all objects in space. AKA asteroids/comets/gas/dust come together to make protoplanets, that make planets, that eventually form stars, all the way up to the turtles on space elephants...okay maybe not that last one.
...So, if a gas giant reaches critical mass for fusion in it's core, when does it become a star? Technically?
I also can't help but speculate here despite my naivety... If a well formed star such as the Sun has such a complex system of layers and convections that it takes a photon 10k-170k years just to reach the surface, how does such a system establish itself? Perhaps these early jets are the result of early fusion before the full magnetic potential and thermal convection structure is normalized?
-Jake
In this context, "form" means to go from a cloud of gas to the onset of sustained thermonuclear fusion of hydrogen in the core (e.g., main sequence burning). Once that starts, then it's considered a star. The jets aren't thought to be a by-product of fusion because they seem to originate in the magnetic field of the protostar. It's hot there but the pressure isn't nearly high enough to permit fusion to take place.
Wow 👍👍👍👍👍😀
The heaviest star is 30 times larger than the sun and the largest star is 30 times heavier than the sun.
Anna McLeod (pronounced M. Cloud) authoring a paper on Large Magellanic Cloud? It was written in the stars.
There can be only One!
Having relatively large and active galaxies like the Magellanic Clouds so nearby is God's gift to astronomers!
Utter: If you can get that triggered over a simple statement that has God's name in it, then you're really a mess, boy. Since you obviously don't have a pastor to consult, I suggest you go to a secular psychiatrist. Do so quickly, though. You're likely teetering on the edge of a full breakdown right about now.
Alternative title: "How is babby (star) formed". But this is not Yahoo Answer, it's a nice TH-cam channel instead
I "sounds" like no one has actually "observed" star formation.
Come on Gaia DR3 lol
4:15 the sun is actually more massive than 80%of stars.
So wait a minute, these polar jets themselves have no angular momentum, so how do they carry away angular momentum?
jaxxstraw they do have their own angular momentum but they carry away angular momentum from the star by removing mass from the star. This helps regulate the stars angular momentum.
@@LaunchPadAstronomy That's what I'm not getting. The angular momentum of some particle is just a tangential momentum bound to the centre of mass by a force. If a spinning dancer is holding a ball and lets go, the ball will fly off in a tangential straight line. As you approach the centre of the star (looking down from the top, say), particles nearer the centre have enough tangential momentum to balance the gravity pulling them in. At the centre there is no gravitational force (Newton's spherical shell, and all that) and thus are effectively not rotating at all so have little or no angular momentum.
We can actually see that, because if the jet particles had any angular momentum then they wouldn't be collimated into a jet, they'd shoot off at tangents.
So the mass being lost hasn't got any angular momentum, it must have transferred it by friction to layers further out, thus actually speeding them up. So you're losing mass, reducing the gravitational forces on outer layers. But I don't get where the angular momentum is going.
I'm not trying to be awkward here, it's just one of those things that once one starts thinking about it, your head starts to spin, kind of thing :)
*edit* or is all the angular momentum getting converted to heat by friction?
But we need to keep in mind that angular momentum is mass rotating some distance from a center. If the star gains mass from accretion, its angular momentum changes. Since the jet is carrying mass away from the star, it acts to prevent the star's angular momentum from getting too high. However, there's still much about the formation and angular momentum management of the jets we still don't yet know about.
Could it be matter that is too light being ejected from the whirlpool, like a cross between stirring chocolate powder in milk and a long fart.
Twenty-one Low Mass Stars disliked this video.
Herbig? Like Herbig brown eyes?
What a Haro-ing thing to say :)
My sister in law is bipolar, but she'll never be a star...
If it were ALL Hydrogen Gas, the color (though added) would be uniform throughout.
There's some helium in there as well, but FWIW, hydrogen glows at multiple colors.
@@LaunchPadAstronomy: What are the causes/parameters that cause different colors?
Here you go: th-cam.com/video/nMsTZnscAgE/w-d-xo.html
Your productions have improved by magnitudes in little over a year. The sound was terrible in this one. Interesting and informative though.
I'm sorry the sound wasn't quite so good. I've been trying to improve as I go along so thanks for noticing!
I am curious, ok? you dont't have to ask, ok?
What??
How we came to be? Does that mean that my school qualification for human biology is now defunct?
Nah it’s just more of the backstory:)
*1 dislike* w-who is this?
Dislikers are gonna dislike ;)
According to the Electric Universe theory, there is no fusion in the core of a star, so if you don't know the truth, then stop repeating outdated paradigms!