Author Topic: Current Target  (Read 6371 times)

echo-lily-mai

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Current Target
« on: March 19, 2010, 06:14:07 pm »
There has been several occasions where I’ve looked through the target list to work on a new merger and wished I could re-read the text that was originally posted with it giving tips on what to look out for. It is also nice to know what mergers have been looked at, and that a new merger to work on has been posted.

So here is the thread to post new mergers as they get released, just copy and paste straight from the mergers home page under “Current target” (just found out it doesn't copy the link that way  :(  so if possible I'll try to copy the link)

It would be great to keep this as a clean thread so any comments about this please post here   :)
« Last Edit: March 19, 2010, 06:23:46 pm by echo-lily-mai »

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #1 on: March 19, 2010, 06:14:50 pm »
November 23, 2009 Galaxy Zoo mergers goes live

November 24, 2009
http://cas.sdss.org/dr7/en/tools/quicklook/quickobj.asp?id=587739646743412797

November 28, 2009
“The Mice”

December 5, 2009
Arp 97

December 8, 2009
Arp 238
Can you model the interlocking arms?

December 10, 2009
Arp 57
It is a difficult system to model. Are you up to the challenge?

December 11, 2009
Arp 237
Messy- but fun!

December 14, 2009
Arp 142
 An off-center ring galaxy?

December 15, 2009
Arp 58
Thin, curvy arms.

December 16, 2009
Arp 255
Arp 255 has some odd features. Can you find a model that fits them?

December 17, 2009
Arp 313
Arp 313 is misshaped and distorted.

December 21, 2009
Arp 301

January 10, 2010
Arp 173
Such a thin tail, but not impossible.

January 16, 2010
Arp 239
Though this image of Arp 239 has a line through it, it is still a great chance to try to match the tails.

January 24, 2010
Arp 302
Arp 302 has some interesting spiral arms. To see them in the simulations you may need to increase the number of particles by editing prefs.

January 28, 2010
Arp 112
Arp 112 gets us back to looking at the tails of a merger.

February 7, 2010
Arp 290
Arp 290 has a warped primary disk.

February 14, 2010
http://cas.sdss.org/dr7/en/tools/quicklook/quickobj.asp?id=587729227151704160
Take on our Valentine's gift to you all.

March 4, 2010
Arp 297
The tail on the primary galaxy in Arp 297 wraps around quite a bit. The velocity of the secondary may be important to find a match.

March 9, 2010
Arp 101
Arp 101 is a little tricky.


Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #2 on: March 19, 2010, 06:15:20 pm »
March 19, 2010
SDSS ID: 587742010583941189 http://cas.sdss.org/dr7/en/tools/quicklook/quickobj.asp?id=587742010583941189
The secondary galaxy in Arp 89 has a fairly distinctive tail. Try to focus on that feature after matching the rotation on the primary galaxy.
« Last Edit: March 19, 2010, 06:25:23 pm by echo-lily-mai »

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #3 on: March 29, 2010, 07:50:16 am »
March 29, 2010
SDSS ID: 587746029596311590 http://cas.sdss.org/dr7/en/tools/quicklook/quickobj.asp?id=587746029596311590 
The central galaxy in Arp 181 has multiple tails. Even just matching two would be a great job.



Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #4 on: April 15, 2010, 08:04:24 am »
April 15, 2010
SDSS ID: 587731913110650988  http://cas.sdss.org/dr7/en/tools/quicklook/quickobj.asp?id=587731913110650988
The two galaxies in Arp 285 are far apart. The tails on the central galaxy are good features on which to focus.

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #5 on: April 23, 2010, 03:37:18 pm »
April 23, 2010
SDSS ID: 587741602030026825 http://cas.sdss.org/dr7/en/tools/quicklook/quickobj.asp?id=587741602030026825
Each galaxy in Arp 305 has distinctive features. They may be far apart, but they have recently interacted. The number of candidate matches should be a little higher for this target.

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #6 on: April 28, 2010, 01:51:50 pm »
April 28, 2010
HST Target: NGC 6786
This Hubble image of NGC 6786 and LEDA 62867 shows two nice spiral galaxies with obvious tidal features. Enjoy your first attempt to model a merger from an HST image!

Art does not reproduce the visible....  Paul Klee

graham d

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Re: Current Target
« Reply #7 on: May 02, 2010, 06:15:51 pm »
In all its glory
http://hubblesite.org/newscenter/archive/releases/2008/16/image/ai/
Some satisfaction after fourth attempt :D

echo-lily-mai

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Re: Current Target
« Reply #8 on: May 07, 2010, 02:20:39 pm »
May 07, 2010
HST Target: Arp 272 Arp 272
This HST image of Arp 272 presents a bit of a challenge. The interaction is strong, but also somewhat recent. Try using enhance to alter the masses and velocities.

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #9 on: May 23, 2010, 03:48:02 pm »
May 23, 2010
HST Target: ESO 77-14  ESO 77-14
Each galaxy in this pair has a distinctive tail. The parameters are a little sensitive though. Many results show multiple passages.

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #10 on: June 01, 2010, 11:15:41 am »
June 01, 2010
HST Target: Arp 220 Arp 220
The central galaxy shows a single tail. The secondary galaxy has a bit of an irregular shape. See if you can help us understand what's going on in this HST image.

Art does not reproduce the visible....  Paul Klee

ElisabethB

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Re: Current Target
« Reply #11 on: June 09, 2010, 09:05:12 pm »
June 01, 2010
HST Target: Arp 220 Arp 220
The central galaxy shows a single tail. The secondary galaxy has a bit of an irregular shape. See if you can help us understand what's going on in this HST image.
maybe it is just me, but with this one I'm seeing loads of collisional rings.
Anyone else?  :D

echo-lily-mai

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Re: Current Target
« Reply #12 on: June 13, 2010, 09:41:03 am »
June 13, 2010
HST Target: NGC 5331 NGC 5331
This HST image is a little crowded. The two interacting galaxies each have extended faint tails. Try to match the general shape first, then see if you can extend the length of the tails.

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #13 on: June 23, 2010, 08:58:34 am »
June 23, 2010
HST Target:Arp 148 Arp 148
Arp 148 has a nice ring. With the line-of-sight velocities held low, you should be able to get some passages through the disk.

Art does not reproduce the visible....  Paul Klee

echo-lily-mai

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Re: Current Target
« Reply #14 on: July 18, 2010, 09:26:32 am »
July 18, 2010
SDSS ID: 587732136993882121
Arp 214 looks easy due to the long tails. However, random matches are harder to come by. Try using enhance to improve a rough match, especially by reversing the rotation direction on the primary galaxy.

Art does not reproduce the visible....  Paul Klee