Author Topic: Could this be a Hanny's Voorwerp as well?  (Read 118224 times)

laihro

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #30 on: February 29, 2008, 06:09:55 am »
This merger has been posted a couple of times, but I think no one took interest in the blue artifacts everywhere. Whats interesting is that the one from the link below has a spectra. It seems to be behind the merger galaxy but is clearly near to it:
blue: z=0.03
nucleus: z=0.029
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587741532784361481

Another interesting thing is the faint bridge to the top of the image. It leads to this object:
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587741532784361724
IMHO. And I don't have a clue ...

laihro

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #31 on: February 29, 2008, 06:44:59 am »
This is something interesting I found in Ricks ARP thread.
http://www.galaxyzooforum.org/index.php?topic=10300.msg112565#msg112565
But maybe it's only an artifact from the edge of the universe  ;D
« Last Edit: March 07, 2008, 04:41:16 am by laihro »
IMHO. And I don't have a clue ...

michpet

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #32 on: February 29, 2008, 09:11:42 pm »
This merger has been posted a couple of times, but I think no one took interest in the blue artifacts everywhere. Whats interesting is that the one from the link below has a spectra. It seems to be behind the merger galaxy but is clearly near to it:
blue: z=0.03
nucleus: z=0.029


I had this same object back in October, and asked about it in the analysis questions thread.

The following information is from DLocksmith--it may have some of the answers you're looking for.  Apparently this is a fairly well-studied object.

It is in NED. Its called "Arp 105"

Quote
Arp 105 consists of an infrared luminous starburst spiral being

torn apart by a massive elliptical close to the center of a cluster of

galaxies. The elliptical has already accreted gas-rich objects and may be

the precursor of a giant cD galaxy. At the tip of colossal tidal tails

that emanate from the spiral we find a blue compact dwarf galaxy and an

irregular galaxy of Magellanic type. We propose that these small galaxies

are recycled objects being formed out of the tidal debris from the

spiral. In Arp 105 we observe that the collision has caused a marked

spatial separation of the cold interstellar gas: more than 90% of the CO

emission comes from the central region of the spiral, whereas more than

90% of the observed atomic hydrogen is situated beyond 30 kpc from the

center of the spiral.

So, if I understand right, the blue spiral is being sucked into the big elliptical and blown out again as dwarf galaxies.

AWESOME!!!



This is certainly one of my all-time favorites--it's great to see it again.

Michelle

EricFDiaz

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #33 on: March 18, 2008, 04:15:11 am »
I wonder if 'Hanny's Voorwerp' is destined to become a part of the standard astronomical nomenclature like 'Herbig-Haro Object' for example. ;D ;D ;)

levdtrotsky

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #34 on: March 18, 2008, 04:52:30 pm »
I am having trouble figuring out how to post, so i will do this as a reply:

I think this is a thingie:

588017705091006510

elizabeth

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #35 on: March 18, 2008, 05:08:33 pm »
 :D Hi welcome to the zoo. What kind of thingie do you think it is?http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=588017705091006510

Alice

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #36 on: March 18, 2008, 05:11:26 pm »
I wonder if 'Hanny's Voorwerp' is destined to become a part of the standard astronomical nomenclature like 'Herbig-Haro Object' for example. ;D ;D ;)

I will be very disappointed if in 100 years' time it is not a subheading in every good textbook for young college astronomy students.

I am having trouble figuring out how to post, so i will do this as a reply:

I think this is a thingie:

588017705091006510


Welcome to the zoo! That's an irregular galaxy. Very blue, but a much paler blue than the Voorwerp and you can see lots of stars and star formation in it. Not yet old or massive enough to have formed a defined structure like spiral or elliptical yet. Classify as star/don't know and drop me a line if you'd like an Alice tutorial with image posting. :)

Hanny

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #37 on: March 18, 2008, 05:35:31 pm »
I wonder if 'Hanny's Voorwerp' is destined to become a part of the standard astronomical nomenclature like 'Herbig-Haro Object' for example. ;D ;D ;)
I will be very disappointed if in 100 years' time it is not a subheading in every good textbook for young college astronomy students.

Heh :D

aether

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #38 on: March 19, 2008, 06:42:26 pm »
whats a giant cD galaxy
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pluk

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #39 on: April 24, 2008, 02:24:19 pm »
« Last Edit: April 24, 2008, 03:31:01 pm by pluk »
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gumbosea

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #40 on: May 03, 2008, 06:18:25 am »
« Last Edit: February 26, 2010, 06:18:59 am by gumbosea »

pluk

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #41 on: May 07, 2008, 03:34:05 pm »
Really small, but really deep blue. Taken from here

588017723862941885
« Last Edit: May 08, 2008, 01:35:07 pm by pluk »
We tend to overestimate the effect of a technology in the short run and underestimate the effect in the long run. - Roy Amara, engineer, futurist (b. 1925)

Edd

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #42 on: May 08, 2008, 11:31:38 am »
whats a giant cD galaxy

Big fat red elliptical, of the sort you often find sitting right in the middle of a cluster of galaxies.
When I look up at the night sky and think about the billions of stars out there, I think to myself: I'm amazing. - Peter Serafinowicz

gumbosea

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #43 on: May 17, 2008, 06:32:27 am »
Central blue object has (3) photmetric points, From left to right,
587738615954014405
587738615954014407
587738615954014403

Looks like another blue blob
« Last Edit: February 26, 2010, 06:22:53 am by gumbosea »

tdhoufek

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Re: Could this be a Hanny's Voorwerp as well?
« Reply #44 on: July 08, 2008, 03:19:07 am »
  Since I am a very novice member I don't mind asking silly questions.

  I assume that a voorwerp -- which I will provisionally use as the generic term for hypothetical other things like Hanny's Voorwerp -- is something you could not confirm by casual use of the various web tools associated with GalaxyZoo.

  Still, if one were to help find another voorwerp, what would one look for?  I understand that only one has ever been observed, so we are all speaking somewhat speculatively here.  But what is your best guess?  I  understand it is blue (or appeared blue but was perhaps really more green), and it is in proximity to a rather normal-looking spiral galaxy?  If it appeared blue, what distinguished it from other things observed to be blue (especially irregular galaxies)?  Any other helpful tips?

  Apologies if this has been addressed before.  I am not sure I will ever have time to go back through all the old messages here, and there were many on the temporary forum I had not gotten around to reading too.  I appreciate any help you can give me!
tdh