Galaxy trailed by stunning plume of gas

February 22, 2016
Spectacular tails of ionised gas in the Virgo cluster galaxy NGC 4569

Astronomers have discovered a spectacular tail of gas more than 300,000 light years across coming from a nearby galaxy.

The is made up of – the material new stars are made of – and is five times longer than the galaxy itself.

The discovery was made by an international team of scientists led by Dr Alessandro Boselli at the Laboratoire d'Astrophysique de Marseille in France, and published in the journal Astronomy & Astrophysics.

International Centre for Radio Astronomy Research astrophysicist Luca Cortese, who is part of the research team, said scientists noticed long ago that the galaxy NGC 4569 contained less than expected but they could not see where it had gone.

"We didn't have the smoking gun, the clear evidence of direct removal of gas from the galaxy," Dr Cortese said.

"Now, with these observations, we've seen a huge amount of gas that creates a stream trailing behind the galaxy for the first time.

"What's very nice is that if you measure the mass of the stream, it's the same amount of gas that is missing from the galaxy's disc."

NGC 4569 sits in the Virgo , a group of 55 million light years from our own Milky Way.

It is travelling through the cluster at about 1200 kilometres a second, and Dr Cortese said it was this movement that was causing the gas to be stripped from the galaxy.

"We know that big clusters of galaxies trap a lot of hot gas," he said.

"So when a galaxy enters the cluster it feels the pressure of all the gas, like when you feel the wind on your face, and that pressure is able to strip matter away from the galaxy."

The discovery was made when the research team used a super-sensitive camera on the Canada France Hawaii Telescope to observe NGC 4569 for longer than ever before.

Dr Cortese said it could be the first of many galaxies found to have long tails of gas extending from them.

"It's pretty exciting because this was just a pilot and we only targeted the brightest spiral galaxy in the Virgo cluster," he said.

"We were amazed by what we got… this is really promising because it means it's very likely we'll find similar features in many other galaxy clusters."

Explore further: The answer is blowing in the intergalactic wind

More information: Spectacular tails of ionised gas in the Virgo cluster galaxy NGC 4569. arxiv.org/abs/1601.04978

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15 comments

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katesisco
3.7 / 5 (3) Feb 22, 2016
Scooped yet again by tech moving forward outside US. Where is the James Webb?
Bigbangcon
2.2 / 5 (10) Feb 22, 2016
"We were amazed by what we got… this is really promising because it means it's very likely we'll find similar features in many other galaxy clusters."

It IS indeed amazing; because "we" believe in the mantra that the galaxies were formed by sucking up the material that was scattered around by the mother of all Bangs - a mantra concocted by "our" mathematics to give a "scientific" rational for the genesis by "God"!

From direct observational evidence the famous astronomers Victor Ambartsumian and Halton (Chip) Arp and others, showed that matter is ejected/ dissipated from existing galaxies (all galaxies 'in motion' are members of some cluster) to form nearby satellite galaxies. But for all their profound work, they were exiled from astronomical research: http://redshift.v...2MAL.pdf

Now "we" see the same thing and are amazed, but do not have the decency to even acknowledge the implications of previous findings of Ambartsumian, Arp et al.!
Bigbangcon
2 / 5 (8) Feb 22, 2016
And no ejection with cosmic link? Long before Arp, cosmic link was observed even in 1785 by none other than William Herschel: http://www.sci-ne...038.html

antialias_physorg
5 / 5 (6) Feb 22, 2016
Scooped yet again by tech moving forward outside US.

Does ot really matter who discovers what? The discovery matters. Almost all big science efforts are international nowadays, anyhow.
jonesdave
4.3 / 5 (11) Feb 22, 2016
Now "we" see the same thing and are amazed, but do not have the decency to even acknowledge the implications of previous findings of Ambartsumian, Arp et al.!


They were shown to be wrong. Indisputably. That is why there is no acknowledgement. Arp's redshift musings have long since been shown to be wrong. With much higher definition 3d surveys, his "coincidences" disappeared. In other words, the quasars had nothing to do with ejected material from galaxies.
Quite why some people hold on to falsified hypotheses is beyond me.
https://briankobe...ing-red/
Bigbangcon
2.5 / 5 (8) Feb 22, 2016
Quite why some people hold on to falsified hypotheses is beyond me.
https://briankobe...ing-red/


Galileo was similarly refuted and muzzled. But his name kept on coming up with each new finding that seemed to support him; until he was vindicated!

Out of the thousands of official astronomers and astrophysicists only a single study (by two) becomes the "mother" of all publications to refute Arp! But like Galileo, Arp's name keeps coming up, because new findings unfortunately, brings it up. No point arguing, only the future will settle the issue one way or the other!
Phys1
3.7 / 5 (6) Feb 22, 2016
@con
Galileo was similarly refuted and muzzled.

Are you saying that Galileo was wrong , too?
Even the Vatican now recognises that he was right.
Maggnus
4.2 / 5 (5) Feb 22, 2016
Hey jonesdave, that is an excellent link and contains a very good summary. Nice catch.
FredJose
3.7 / 5 (3) Feb 23, 2016
The plume is the exhaust trail from the galaxy engines used by the super-intelligent beings who have discovered how to drive the whole galaxy as a vehicle. We need to do some serious catching up......;-)
vidyunmaya
1 / 5 (3) Feb 23, 2016
sub; cosmological Structure- necessity-demand
Cosmic Flow drive functional index - is a drive and forms part of creative structures-new Modellig.
NGC 4569 data around 55 M LY- Virgo cluster should open up new frontiers- cosmic vision beyond the present day In-complete concepts that frustrates the search for origins- cosmic Function of the universe.
Visible-invisible matrix of the Universe is highlighted by me and super-imposition of this near Milkyay- galactic frame is presented at COSPAR-2013. This knowledge Base information -in search of origins- cause-effect- Vedas interlinks must be useful in time
Books at LULU-www [dot]lulu [dot]com-spotlight-jnani108
bluehigh
5 / 5 (1) Feb 23, 2016
Crikey, the article image has no attributed provenance.

Could be just a fake artists impression to amaze the hoi polloi

Vietvet
4 / 5 (8) Feb 23, 2016
It's no fake. PO should have given attribution to The International Centre for Radio Astronomy Research. http://www.icrar.org/

http://www.icrar.org/news/news_items/media-releases/galaxy_tail_discovered
Captain Stumpy
4 / 5 (8) Feb 23, 2016
It's no fake. PO should have given attribution to The International Centre for Radio Astronomy Research. http://www.icrar....scovered]http://www.icrar....scovered[/url]
It is also mentioned in the abstract of the arXiv paper: MegaCam at the CFHT,

as well as on the University site: Credit: CFHT/Coelum
http://www.icrar....scovered]http://www.icrar....scovered[/url]

that means the pic specifically came from "The Canada–France–Hawaii Telescope ...located near the summit of Mauna Kea mountain on Hawaii's Big Island"

https://en.wikipe...elescope

bschott
1.8 / 5 (5) Feb 24, 2016
Galileo was similarly refuted and muzzled. But his name kept on coming up with each new finding that seemed to support him; until he was vindicated!


Well, you know how it is when one guy makes claims that would rock the established status quo, no matter how rediculous the status quo is or how long it has been that. Most people just throw on the best helmet they have if you hit them in the head with the truth.

Tuxford
1 / 5 (1) Mar 03, 2016
"We know that big clusters of galaxies trap a lot of hot gas," he said.


Because the galactic cores are largely the source of the gas ejected therefrom, leaving a trail of gas behind the galaxy as it moves outward from the central region of the cluster.

The merger maniacs have it backwards once again, but just cannot fathom the opposite alternative. After all, such a recognition would constitute a direct assault on their own fanciful intellectual power, an assault their own ego just cannot permit. Thus, the merger mania must continue, at all costs.

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