Author Topic: Dumbbell shaped galaxies  (Read 2745 times)

zutopian

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Dumbbell shaped galaxies
« on: November 30, 2012, 09:25:44 am »
There is a discussion about "bow tie/barbell"-shaped galaxies in Talk.:
http://talk.galaxyzoo.org/discussions/DGZ10068xt
I found out, that someone had posted a GZ image (SDSS DR7) in 2007 on the forum and called it also bow tie.:
http://www.galaxyzooforum.org/index.php?topic=3573.msg20411#msg20411
The Hubble Zoo ones were called dumbbell/hourglass shaped in various topics on the forum.
I collect here images of such galaxies from the Hubble Zoo.
The 1st, 3rd and 4th galaxies have in common, that they apparently have a dustlane.

EDIT:
I searched in google for dumbbell galaxies and found out, that wikipedia has such a page, but there is not much info. There is listed NGC 326, which is an X-shaped (or "winged") radio galaxy.
I guess, that NGC 326 is a different kind of galaxy than the ones in this topic.
NGC 0326 image: http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237680074466197709
NGC 326, which has a doublecore, doesn't look like a dumbbell.
Well, I reposted in the Talk discussion two images of galaxies, which have also a doublecore, but look like a dumbbell.:
http://talk.galaxyzoo.org/objects/AGZ0004zah
http://skyserver.sdss3.org/dr8/en/tools/explore/obj.asp?id=1237658205584818220
« Last Edit: November 30, 2012, 01:30:37 pm by zutopian »

zutopian

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Re: Dumbbell shaped galaxies
« Reply #1 on: November 30, 2012, 09:30:08 am »
« Last Edit: November 30, 2012, 11:08:06 am by zutopian »

zutopian

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Re: Dumbbell shaped galaxies
« Reply #2 on: November 30, 2012, 09:32:10 am »
Copy from "Newbies...":

Hi, I am new here... this is an odd looking thing:

http://www.galaxyzoo.org/examine/AHZ2001rc2

anyone know what this is cheers!


New link: http://zoo3.galaxyzoo.org/examine/AHZ2001rc2

welcome! this looks like an edge-on with a dumbbell shaped galaxy "hovering" above it.
« Last Edit: November 30, 2012, 11:09:03 am by zutopian »

zutopian

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Re: Dumbbell shaped galaxies
« Reply #3 on: November 30, 2012, 11:01:05 am »
New link for the image in the below copied post. :
http://zoo3.galaxyzoo.org/examine/AHZ400013w

Greetings again zooites!  This lovely one has a couple of interesting features I would like to share with you. 

First, notice the Blue streak above the galaxy.  Any suggestions on what this might be?

Second, in the core there appears to be a dust lane, but then look at the negative - there appears to be an hourglass shape to it.  I almost thought it was barred, but didn't classify it as such. NED lists 6 objects, all types are Galaxies, and 2 have z = >1.  I am curious about this image.  No specta that I can find, but that's not saying much as i always have a hard time finding spectra  ???  Please post your ideas or guesses - educated or otherwise - I'm all ears and thanks!  I love you guys!

  http://www.galaxyzoo.org/examine/AHZ400013w


« Last Edit: November 30, 2012, 11:15:48 am by zutopian »

zutopian

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Re: Dumbbell shaped galaxies
« Reply #4 on: November 30, 2012, 11:05:31 am »
Copy from "Hubble Oddities":
Image link: http://zoo3.galaxyzoo.org/examine/AHZ40003bm

Just had this weird galaxy to classify.  It was previously posted by DW in: Oddballs- Post your weird pics here! Reply #7454 on: April 22, 2010 but  it didn't draw any responses there.  Perhaps someone here could throw some photons on the subject...   ???    It's got me beat.


90015422

I have already seen PN with such a shape, like a diabolo. M 27 (Dumbell) has a bit this shape...

Thanks AlexandredOr,  After your response I browsed and found M27 NGC6853 the Dumbbell Nebula and also the Bug/Butterfly Nebula NGC6302 which is even more this shape.  But by my understanding nebulae are much smaller than galaxies(?) At the distances we are looking back with Hubble  would we see nebulae? I'm completely lost at present regarding the size of the objects we are looking at (amongst other things...)   No way to tell with current info.

I remembered a somewhat similar shaped SDSS Zoo2 extra galaxy I had previously classified.
Took a while to find it's number but here it is, is it a galaxy?


http://s3.amazonaws.com/zoo2_extra/269892.jpg
SDSS 588017569775550502
ra 193.35326735, dec 11.71011095,  z 15.04
http://casjobs.sdss.org/dr7/en/tools/explore/obj.asp?id=0x08290edd40290026
« Last Edit: November 30, 2012, 11:12:48 am by zutopian »