APOD: Herbig-Haro 24 (2015 Dec 18)

Comments and questions about the APOD on the main view screen.
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APOD: Herbig-Haro 24 (2015 Dec 18)

Post by APOD Robot » Fri Dec 18, 2015 5:08 am

Image Herbig-Haro 24

Explanation: This might look like a double-bladed lightsaber, but these two cosmic jets actually beam outward from a newborn star in a galaxy near you. Constructed from Hubble Space Telescope image data, the stunning scene spans about half a light-year across Herbig-Haro 24 (HH 24), some 1,300 light-years or 400 parsecs away in the stellar nurseries of the Orion B molecular cloud complex. Hidden from direct view, HH 24's central protostar is surrounded by cold dust and gas flattened into a rotating accretion disk. As material from the disk falls toward the young stellar object it heats up. Opposing jets are blasted out along the system's rotation axis. Cutting through the region's interstellar matter, the narrow, energetic jets produce a series of glowing shock fronts along their path.

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Beyond » Fri Dec 18, 2015 5:23 am

The good news is, the jet missed the whale in the lower right.
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by JohnD » Fri Dec 18, 2015 9:39 am

How much thrust would those jets produce? If they didn't balance would the protostar go careering off out of the dust cloud?
John

heehaw

Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by heehaw » Fri Dec 18, 2015 9:46 am

JohnD wrote:How much thrust would those jets produce? If they didn't balance would the protostar go careering off out of the dust cloud?
John
Very nice question!

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Boomer12k » Fri Dec 18, 2015 1:20 pm

WOW...so cool!!!!!!!!!!

A...um....Harrowing place....perhaps...but a HAPPY BIRTH!!!!! And Who Knows....in a few Billion Years...the pitter patter of little microbes????

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Boomer12k » Fri Dec 18, 2015 1:22 pm

Would the star have ignited necessarily yet???

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Stardaddyed3 » Fri Dec 18, 2015 1:37 pm

Is this an actual image or artist rendition?

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by geckzilla » Fri Dec 18, 2015 2:03 pm

Stardaddyed3 wrote:Is this an actual image or artist rendition?
Actual image. Do note that some weirdness with the colors is occurring because the cyan channel and the orange channel do not match up entirely due to the very fast movement of the jet. The two datasets used to create the color composite were not captured at the same time. Usually, this doesn't matter, but these jets are moving really fast. Also keep in mind this is not an RGB image.
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by neufer » Fri Dec 18, 2015 2:24 pm

JohnD wrote:
How much thrust would those jets produce?

If they didn't balance would the protostar go careering off out of the dust cloud?
The jet velocity is only about 0.1% the speed of light so this is more like directed solar wind than supernova explosion.

A goodly fraction of a solar mass would have to be ejected asymmetrically in order for the motion to be noticed at all.
Art Neuendorffer

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by JohnD » Fri Dec 18, 2015 2:45 pm

Thank you, Art!
Disappointed though. Thought we had discovered Ringworld.
John

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by BMAONE23 » Fri Dec 18, 2015 3:57 pm

Here is a 3D zoom in to HH24
Click to play embedded YouTube video.

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by De58te » Fri Dec 18, 2015 4:12 pm

I noticed a discrepancy concerning events that contradict the absolute speed of light in a vacuum. In the link saying "opposing jets are blasting out" we find that on February 2014, Herbig-Haro 24 was some 1,500 light-years away. In today's APOD we learn that H-H 24 is 1,300 light-years away. That means in just under 2 years, H-H 24 has traveled almost 200 light-years closer to Earth! Shouldn't this take 200 years even if H-H 24 were traveling at the speed of light? My Gawd, at this rate Herbig-Hero 24 will arrive at Earth in about 13 years!

peterbradford

Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by peterbradford » Fri Dec 18, 2015 4:37 pm

Wait! That's not a whale, bottom right. It's Douglas Adams' Salmon of Doubt!

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Chris Peterson » Fri Dec 18, 2015 4:51 pm

De58te wrote:I noticed a discrepancy concerning events that contradict the absolute speed of light in a vacuum. In the link saying "opposing jets are blasting out" we find that on February 2014, Herbig-Haro 24 was some 1,500 light-years away. In today's APOD we learn that H-H 24 is 1,300 light-years away. That means in just under 2 years, H-H 24 has traveled almost 200 light-years closer to Earth! Shouldn't this take 200 years even if H-H 24 were traveling at the speed of light? My Gawd, at this rate Herbig-Hero 24 will arrive at Earth in about 13 years!
Indeed, there is a conspiracy among governments and the world's top scientists to hide the fact that the Earth will be destroyed in 13 years. Somebody's head is going to roll for allowing this updated distance information to get published!
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by starsurfer » Fri Dec 18, 2015 5:15 pm

This is an otherworldy and mysterious scene, almost looks like something out of Doctor Who!! :D
This area is part of the M78 complex, which has many other Herbig Haro objects associated with it.
Also may the Force be with everyone!

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by bystander » Fri Dec 18, 2015 6:36 pm

Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Ted11 » Fri Dec 18, 2015 7:12 pm

It looks like there are two wider jets perpendicular to the jets under discussion. What's the explanation for these?

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by geckzilla » Fri Dec 18, 2015 7:48 pm

Ted11 wrote:It looks like there are two wider jets perpendicular to the jets under discussion. What's the explanation for these?
Within these dense clouds of material, more than one star is born at around the same time. You can several cavities being carved out by stars in different positions. The large one in the upper left is a roughly cylindrical cavity with a jet at its center axis pointing back to yet another young stellar object forming alongside the two "light saber" jets. To the lower right is a smaller cavity punched out by yet another young stellar object.
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by MarkBour » Fri Dec 18, 2015 7:57 pm

Nature does a pretty good job of drawing straight lines!
Mark Goldfain

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Ron-Astro Pharmacist » Fri Dec 18, 2015 9:37 pm

I'm usually curious why things happen but after glancing at this, I know why I became a pharmacist. Anyone up to give a Readers Digest version? I have enjoyed the idea of today's APOD but what is in its guts may essentially be indigestible. :p: Relativistic jet material starts on page 44 though I suspect it's all pretty relevant. I hope.
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Beyond » Fri Dec 18, 2015 9:59 pm

Ron-Astro Pharmacist wrote:I'm usually curious why things happen but after glancing at this, I know why I became a pharmacist. Anyone up to give a Readers Digest version? I have enjoyed the idea of today's APOD but what is in its guts may essentially be indigestible. :p: Relativistic jet material starts on page 44 though I suspect it's all pretty relevant. I hope.
My Reader's Digest version is: The words are too small and there's way too many of them. I suspect that neufer's indigestible roughage is a lot easier to take, for most people.
That's why you became a Pharmacist, Ron? I would have thought it was because you liked to try and decode Doctors handwriting. :lol2:
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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Ron-Astro Pharmacist » Fri Dec 18, 2015 10:30 pm

Beyond wrote:
Ron-Astro Pharmacist wrote:I'm usually curious why things happen but after glancing at this, I know why I became a pharmacist. Anyone up to give a Readers Digest version? I have enjoyed the idea of today's APOD but what is in its guts may essentially be indigestible. :p: Relativistic jet material starts on page 44 though I suspect it's all pretty relevant. I hope.
My Reader's Digest version is: The words are too small and there's way too many of them. I suspect that neufer's indigestible roughage is a lot easier to take, for most people.
That's why you became a Pharmacist, Ron? I would have thought it was because you liked to try and decode Doctors handwriting. :lol2:
When you dispense Xanax for Zantac it doesn't improve your anxiety or your digestion but at least the patient doesn't care that his belly hurts. I'm speaking only hypothetically!! Electronic medical records will help with that issue – mostly. Not trying to scare anyone but – know your medications!!
Make Mars not Wars

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by heehaw » Fri Dec 18, 2015 11:04 pm

It is so wonderful to get away from politics and look out at the vast Universe, indifferent to our petty squabbles!

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Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Alohascope » Sat Dec 19, 2015 1:11 am

geckzilla wrote:
Stardaddyed3 wrote:Is this an actual image or artist rendition?
Actual image. Do note that some weirdness with the colors is occurring because the cyan channel and the orange channel do not match up entirely due to the very fast movement of the jet. The two datasets used to create the color composite were not captured at the same time. Usually, this doesn't matter, but these jets are moving really fast. Also keep in mind this is not an RGB image.
Actual image .. but not an actual photograph.
"Constructed from Hubble Space Telescope image data, the stunning scene ..." As you said Geck, constructed from two sets of data.

Alohascope

Re: APOD: Herbig-Haro 24 (2015 Dec 18)

Post by Alohascope » Sat Dec 19, 2015 1:16 am

Are the jets spinning? If so are they spinning in the same or opposite directions?