Author Topic: Rare galaxy types in Hubble Zoo - what to look for, where to post  (Read 27178 times)

paulrogers

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #15 on: August 16, 2010, 04:52:13 pm »

http://www.galaxyzoo.org/examine/AHZ10000f7

Any1 know why galaxy have convex nucleus ?
I don't think this one is unusual in that respect.  We see this a lot with bright cores.  I'm not sure if it's in post-processing (trying to adjust contrast) or the detectors are getting over saturated.

Outside chance that blue thing at 5 o'clock might have been lensed a bit though.  There's a bit of blue at 11 o'clock too.  Maybe it's off-center a bit from the line of sight.  I'd suggest reposting in the "Possible galactic lenses" thread.

Welcome to the Zoo, and all the galaxies too. ;)
« Last Edit: August 16, 2010, 05:01:31 pm by paulrogers »

smj

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #16 on: August 16, 2010, 09:50:30 pm »

http://www.galaxyzoo.org/examine/AHZ10000f7

Any1 know why galaxy have convex nucleus ?
I don't think this one is unusual in that respect.  We see this a lot with bright cores.  I'm not sure if it's in post-processing (trying to adjust contrast) or the detectors are getting over saturated.

Outside chance that blue thing at 5 o'clock might have been lensed a bit though.  There's a bit of blue at 11 o'clock too.  Maybe it's off-center a bit from the line of sight.  I'd suggest reposting in the "Possible galactic lenses" thread.

Welcome to the Zoo, and all the galaxies too. ;)

As to core, couldn't this be an instance where the algorithm decompensating for a bright core changed its appearance?

paulrogers

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #17 on: August 18, 2010, 07:46:09 am »
As to core, couldn't this be an instance where the algorithm decompensating for a bright core changed its appearance?
Certainly.  We see algorithm failings alot, for example the red and green speckles at the edges of galaxies in Stripe82 images certainly aren't real.

CTF66

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #18 on: August 24, 2010, 02:06:16 pm »
I'm not sure how to classify this one. Parhaps it is some kind of optical illusion, it has nice symmetry though.


Bruno

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #19 on: August 24, 2010, 03:34:33 pm »
HI CTF66 welcome to the zoo
I suggest you post your finds for the beginning in http://www.galaxyzooforum.org/index.php?topic=271742.0
This thread is read by most of us and we can give you all advice you want..
BTW this is a star... ;)
Ciao
Bruno

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kazvar

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #20 on: August 26, 2010, 11:34:54 am »
http://www.galaxyzoo.org/examine/AHZ50000z1

Is this a spiral galaxy with a yellow and blue sun being sucked in? Looks like there is an arm wrapping around then inviting them in.

paulrogers

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #21 on: August 27, 2010, 06:26:55 am »
http://www.galaxyzoo.org/examine/AHZ50000z1

Is this a spiral galaxy with a yellow and blue sun being sucked in? Looks like there is an arm wrapping around then inviting them in.
I agree with Bruno's previous response, this thread isn't quite the place for newbie finds.  I think you'll get better responses from the Newbies thread on "Wierd & Wonderful".  This is quite an interesting object.

ElisabethB

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #22 on: August 27, 2010, 07:35:24 am »
the green-red-blue object is an asteroid

Blackprojects

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #23 on: September 23, 2010, 01:46:31 pm »
 AHZ3000062
0.45"
   ID: AHZ3000062
Survey: GOODS-N
Survey reference: 50001067
Right ascension: 189.3358° as h:m:s
Right ascension: 12:37:20.59 as decimal
Declination: 62.2556° as d:m:s
Declination: 62:15:20.14 as decimal
Magnitude: 23.6470 ± 0.0056
Magnitude: 22.9891 ± 0.0064
Kron radius: 3.7300
Kron radius: 3.7400
Light travel time:
6.280 Billion years
View inverted image
Show scale(Click and drag to measure a region)
View GOODS images →
View Spitzer and ancillary images →
Search NED →

This one Could almost be one of Hanny"s.



Inverted Image!



GOODS Data.

http://archive.stsci.edu/eidol_v2.php?POS=189.3357732%2C62.2555931&resolver=SIMBAD&SIZE=3.6&max_images=50&CREATE_WHT=0&CREATE_FITS=1&IMAGE_FORMAT=png&CREATE_TAR=1&action=Search&outputformat=HTML_Table

« Last Edit: September 23, 2010, 01:50:02 pm by Blackprojects »

DSherrie56

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #24 on: September 25, 2010, 06:57:38 am »


Is this a ring or lens?


ID: AHZ5000c0x Survey: SDSS
Survey reference: 588015508197605618
Right ascension: 4.5791° as h:m:s Right ascension: 0:18:18.97 as decimal 
Declination: -0.6966° as d:m:s Declination: 0:41:47.67 as decimal 
Magnitude: 15.4548 ± 0.008734
Magnitude: 16.2261 ± 0.004174
Magnitude: 17.1027 ± 0.005697
Magnitude: 15.8137 ± 0.004011
Magnitude: 18.9955 ± 0.06313 
Petrosian radius: 7.8682 ± 0.6143
Petrosian radius: 11.5996 ± 0.1765
Petrosian radius: 11.8173 ± 0.1613
Petrosian radius: 10.3571 ± 0.1783
Petrosian radius: 2.9697 ± -1000 
Redshift: 0.065642 


paulrogers

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #25 on: September 29, 2010, 06:20:09 pm »


Is this a ring or lens?


ID: AHZ5000c0x Survey: SDSS
Ring, I'd say.  Lenses tend to be more sharply focused.  This appears to have "material" all around in a broad band.

lead_bullet

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #26 on: December 14, 2010, 10:05:48 am »
Where should I post this one?


ID: AHZ40004y1
Survey: GEMS and GOODS-S
Survey reference: 90035153


AlexandredOr

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #27 on: December 14, 2010, 12:36:53 pm »
Where should I post this one?


ID: AHZ40004y1
Survey: GEMS and GOODS-S
Survey reference: 90035153

Hi and welcome to the Zoo !
These are stars. You can post them in the binaries thread, or the best stars thread or even in the hubble stars thread...  :)

Baby star opening its eyes on the Universe.

voyager1682002

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #28 on: December 25, 2010, 02:34:12 pm »
Not exactly know what it is. Is that a galaxy? What is the green stuff next to it and the dot in the middle?

http://www.galaxyzoo.org/examine/AHZ6000hbu

ElisabethB

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Re: Rare galaxy types in Hubble Zoo - what to look for, where to post
« Reply #29 on: December 25, 2010, 02:57:28 pm »
Hi voyager1682002
here's the DR7 pic.
It's an overexposed star