The most weird OIII objects

[laihro]

Hi,

there are OIII objects in many shapes and colors. The most famous may be "Hanny's Voorwerp". Now that we have a list covering possibly most of the OIII objects in sdss, lets start a hunt for the most weird and the wonderful.
The list contains 7400 objects and is collected by the computer. Most of its entries where never seen and posted before. As a comparison: The peas collection contains probably 300-350 OIII objects. So there is a lot of stuff to see. Posting previously posted images from other threads is welcome, but please give credits. Also images from other resources than sdss would be nice. Especially because there are OIII objects that don't have an image in sdss:

Edit: The specobjID now links to the spectrum image and the contributor name to an image of the object he revealed.
Those objects, with no contributor name given, were found with the help of Rick Nowell's description. Although many objects are have been revealed now, there are still the two red left.

specobjID	ra	dec	z	zConf	revealed by
327018806968844288	214.97373	56.722257	9.94059E-4	0.875151	FermatsBrother
168264153952157696	171.71036	64.138013	3.27158E-3	0.980763	587728677928697938
160665219125739520	145.18005	3.9588374	4.30121E-3	0.997971	587728880336371807
284797341574103040	162.873	54.03486	4.50311E-3	0.982258	587731870703484991
95642032961224704	196.10967	-3.5846236	4.64772E-3	0.933524	587725039025193070
143777215476137984	170.06125	2.5224876	5.38567E-3	0.874932	587726032781049939
86916180744339456	220.69273	-0.34881795	5.59447E-3	0.96143	587722982831620206
465226678717644800	233.78664	28.699823	6.73228E-3	0.940686	no object id
162354321885757440	157.20041	4.2336599	7.14247E-3	0.891375	588010359076290630
467195582717362176	248.39322	19.946142	8.07561E-3	0.972921	no object id
81850830201815040	189.12711	0.2211941	0.012403	0.875647	588848900453564510
211612124412116992	1.7982901	13.768574	0.017915	0.892387	587730772815773851
100146045601710080	257.6266	57.001572	0.027743	0.870142	587725503410995472
139553401003311104	193.04434	66.79173	0.02791	0.95008	587725816951865480
187686314538172416	29.868452	-8.3512786	0.033997	0.942326	587727884698452025
214426939941715968	126.55903	42.475993	0.038223	0.965165	no object id
138990318052704256	182.09136	66.318324	0.040365	0.926633	587725550138294369
116753555255197696	51.483587	1.2720132	0.048853	0.99945	no sdss image
408366865736269824	182.74936	42.119644	0.051004	0.993367	588017720644337749
214426939597783040	125.78453	42.255846	0.056162	0.998969	no object id
152219809604435968	226.97646	1.1382632	0.061056	0.995322	587726031732211903
152219809759625216	226.60326	1.0508499	0.074254	0.992045	587726031732080865
466633903663218688	244.24458	23.132053	0.100102	0.999907	no object id
467195582243405824	248.90309	19.554499	0.148193	0.989645	no object id
466633905156390912	243.40338	23.663732	0.14934	0.999576	no object id
115064361977905152	39.753283	0.30996612	0.216539	0.913777	no object id
108308961916092416	352.60305	1.267332	0.250682	0.999948	no sdss image
465789383677575168	238.90513	26.133145	0.44245	0.995642	no object id
152219810942418944	228.26853	2.2673265	0.6376	0.996213	587726033343414334

Happy hunting!

[laihro]

Let me make the start  .
587739609166315552 Posted first by Boykie in "Best Spirals"

[FermatsBrother]

Hi liahro - It would be most helpful and user-friendly (a term often ignored by computer programmers  ) if you posted the URL instead of just the ObjId in your list.
Fermats Brother

[laihro]

Hello Fermats Brother,

Hi liahro - It would be most helpful and user friendly (a term used by computer programmers !) if you posted the URL instead of just the ObjId in your list.
Fermats Brother

An URL like this
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739609166315552
contains the ID of the photo object as its last part (id=587739609166315552). I mentioned above that the objects enumerated here, don't have an image in sdss and therefore there is no photo object id and no URL to give. That's the reason why I enclosed the "ra" and "dec" values and asked people who know how to deal with those values to look for images from other resources than sdss.
The "specobjID" is a different identifier. It provides means to look up additional data like "plate", "fiber" and "MJD" whatever that is, using a query like this:

Code: [Select]

select *
from SpecObj
where specObjID = 327018806968844288

Thank you for pointing out that I haven't made myself clear enough.

[FermatsBrother]

Hello Fermats Brother,

Hi liahro - It would be most helpful and user friendly (a term used by computer programmers !) if you posted the URL instead of just the ObjId in your list.
Fermats Brother

An URL like this
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739609166315552
contains the ID of the photo object as its last part (id=587739609166315552). I mentioned above that the objects enumerated here, don't have an image in sdss and therefore there is no photo object id and no URL to give. That's the reason why I enclosed the "ra" and "dec" values and asked people who know how to deal with those values to look for images from other resources than sdss.
The "specobjID" is a different identifier. It provides means to look up additional data like "plate", "fiber" and "MJD" whatever that is, using a query like this:

Code: [Select]

select *
from SpecObj
where specObjID = 327018806968844288

Thank you for pointing out that I haven't made myself clear enough.

Hi liathro - There is an "ObjId" for these "specobjID" references.
For example, your first one (327018806968844288   214.97373   56.722257) equates
to 587733604792598560
Fermats Brother

[laihro]

For example, your first one (327018806968844288   214.97373   56.722257) equates
to 587733604792598560
Fermats Brother

  NICE FIND!! How did you do this? Then maybe it's only a database problem.

But for example this one has definitively no image: 108308961916092416   352.60305   1.267332

[Edd]

Hello Fermats Brother,

Hi liahro - It would be most helpful and user friendly (a term used by computer programmers !) if you posted the URL instead of just the ObjId in your list.
Fermats Brother

An URL like this
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739609166315552
contains the ID of the photo object as its last part (id=587739609166315552). I mentioned above that the objects enumerated here, don't have an image in sdss and therefore there is no photo object id and no URL to give. That's the reason why I enclosed the "ra" and "dec" values and asked people who know how to deal with those values to look for images from other resources than sdss.
The "specobjID" is a different identifier. It provides means to look up additional data like "plate", "fiber" and "MJD" whatever that is, using a query like this:

Code: [Select]

select *
from SpecObj
where specObjID = 327018806968844288

Thank you for pointing out that I haven't made myself clear enough.

http://tycho.usno.navy.mil/mjd.html

[FermatsBrother]

For example, your first one (327018806968844288   214.97373   56.722257) equates
to 587733604792598560
Fermats Brother

  NICE FIND!! How did you do this? Then maybe it's only a database problem.

But for example this one has definitively no image: 108308961916092416   352.60305   1.267332

Hi laithro - An SDSS image does exist, but it is probably a replacement of the original image to which you are referring.
This often happens when looking up asteroids.
Although your Obj is specified as a "Spectroscopic Target", it currently has no "Photometric object", (but may have had one in an earlier picture).
One possibility is that it's a "Spectroscopic Backgound" measurement with no Obj in view, taken for reference purposes.
The other thing to note is that it's on the edge of the universe as SDSS knows it !!
This is the nearest photoObj, the red blob at 5 o'clock.
Fermats Brother

X = Spectroscopic Target, O = Photometric object

[Rick Nowell]

For the first on your list, I entered the coordinates you have given into the SDSS search tool
top left on normal SDSS page.

This gave an object id:
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587733604792598560

However, i wished to find the main object, so I used the Navigate function which
took me to this page:
http://cas.sdss.org/astro/en/tools/chart/navi.asp?ra=214.97422006&dec=56.7219172

Using the explore function on the right and the spectral objects search on the left,
it gave me this:
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587733604792598553


Using NED again, it came up with a list of many objects all centered around NGC 5585.
Clicking on object 2 (it has 200+ references), I arrived at this page:
http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?search_type=Obj_id&objid=37642&objname=2&img_stamp=YES

This has a list of all the catalogues that have NGC 5585. If one scrolls down to the pink/orange
table, one can query different catalogues. From this I gained a spectrum, which I guess
has an [OIII] spike in it: (wrong, see below reply #13)!!!!!!!!!


although there are others.
There is also a little picture:


It is lucky there is a reference in SDSS. Other search engines include SIMBAD and Aladin.

[laihro]

http://tycho.usno.navy.mil/mjd.html

Thanks for providing insight on this but "whatever that is" was meant to include all three terms On the other hand I haven't even tried to look them up anywhere. 

X = Spectroscopic Target, O = Photometric object

Taking a closer look at your image from bottom to top, I see a sharp break from a dizzy background to deep black. Doesn't that mean that there simply is no "real" image?
This was the first (and to be honest the only) SpecObject with a missing PhotoObject reference I investigated in detail. And that's where I concluded (wrong) that all the other objects don't have an image as well.

[Edd]

For example, your first one (327018806968844288   214.97373   56.722257) equates
to 587733604792598560
Fermats Brother

  NICE FIND!! How did you do this? Then maybe it's only a database problem.

But for example this one has definitively no image: 108308961916092416   352.60305   1.267332

Hi laithro - An SDSS image does exist, but it is probably a replacement of the original image to which you are referring.
This often happens when looking up asteroids.
Although your Obj is specified as a "Spectroscopic Target", it currently has no "Photometric object", (but may have had one in an earlier picture).
One possibility is that it's a "Spectroscopic Backgound" measurement with no Obj in view, taken for reference purposes.
The other thing to note is that it's on the edge of the universe as SDSS knows it !!
This is the nearest photoObj, the red blob at 5 o'clock.
Fermats Brother

X = Spectroscopic Target, O = Photometric object

There has to be an image somewhere for it to have been targeted. I don't think the imaging has been 'superseded' in any way though, and it shouldn't have been given an ObjID only for it to be removed later. I think what's happening is the photometry is being deliberately excluded as it's just outside the strict footprint for SDSS. It may be that near the edges spectra are still taken if there's fibres spare in that area or something.

[laihro]

This has a list of all the catalogues that have NGC 5585. If one scrolls down to the pink/orange
table, one can query different catalogues. From this I gained a spectrum, which I guess
has an [OIII] spike in it:

Hi Rick,

many thanks for you contribution. I have revised the objects spectrum using this query:

Code: [Select]

select dbo.fSpecLineNamesN(lineID), *
from SpecLine
where specObjID = 327018806968844288
order by specLineID asc
I shows that there is an OIII_5008 maximum at 5013.2666A and a Ha_6565 peak at 6571.36084A. So your spectrum could be the right one but it's not showing the OIII spike.
There is an image of the spectrum chart included with the SpecObj view, but the datatype is BLOB. I'm not sure that/how it can be retrieved by a simple select statement (in full).

[Rick Nowell]

It shows that there is an OIII_5008 maximum at 5013.2666A and a Ha_6565 peak at 6571.36084A. So your spectrum could be the right one but it's not showing the OIII spike.

There are a couple of other spectrums on that NED page.

Anyway, from the bottom of that list you gave us:
152219810942418944   228.26853   2.2673265  No SDSS id   
465789383677575168   238.90513   26.133145  No SDSS id

Third up from the bottom I obtained an interesting result:
108308961916092416   352.60305   1.267332   
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587731187811287262
This is a red star.


Using NED again, I cross-referenced it with GALEX

galex:
http://galex.stsci.edu/GR2/?page=explore&objid=2665473475802564987   (nearest)

top of table:
2665473475802564987  GALEX J233024.7+011601  352.603181291423  1.26716391878474
which is pretty near the original coordinates.

Then using the SDSS navigate functon on the left, it presented me with this:
http://cas.sdss.org/dr5/en/tools/explore/obj.asp?id=587731511532060697



NED has this as NGC 0450. Is this right?   

[Rick Nowell]

Hi Rick, many thanks for you contribution. I have revised the objects spectrum using this query:
It shows that there is an OIII_5008 maximum at 5013.2666A and a Ha_6565 peak at 6571.36084A. So your spectrum could be the right one but it's not showing the OIII spike.

Using Spectra from this page for NGC 5585:
http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?search_type=Obj_id&objid=37642&objname=2&img_stamp=YES

There is a spectrum with a pronounced peak around 5000A

[FermatsBrother]

....which I guess has an [OIII] spike in it:

Hi Rick - On the basis that z is v. small, the large peak is from NII at 6585 angstroms, not OIII !!
Fermats Brother

Update 29APR2008.
Sorry about this, I didn't read the original post correctly.
The peak is indeed the H-alpha 6565 peak showing at at 6571 angstroms and NOT N-II at 6585 angstroms.
Fermats Brother