« previous next »
Pages: 1 ... 61 62 [63] 64 65 ... 176

Author Topic: Give peas a chance!  (Read 69631 times)

starry nite

  • Hero Member
  • *****
  • Posts: 1758
  • Pea-Wrangler
    • View Profile
Re: Give peas a chance!
« Reply #930 on: March 21, 2008, 05:24:28 pm »
Anyone else here noticed that the spectral chart of Hanny's Voorwerp posted on the Galaxyzooblog is a classic OIII "Pea" spectrum?
Logged
Good news everyone!

ElisabethB

  • Hero Member
  • *****
  • Posts: 11940
    • View Profile
Re: Give peas a chance!
« Reply #931 on: March 21, 2008, 05:24:46 pm »
twin peas, sadly no spectrum
587730842061964230
Logged

Thomas J

  • Hero Member
  • *****
  • Posts: 6573
  • Do the best you can, while you can
    • View Profile
Re: Give peas a chance!
« Reply #932 on: March 21, 2008, 09:09:49 pm »
That's certainly interesting, Starry Nite. What are your thoughts?
« Last Edit: March 21, 2008, 09:17:49 pm by Thomas J »
Logged
I am very interested in the Universe- I am specialising in the Universe and all that surrounds it.....            Peter Cook.

starry nite

  • Hero Member
  • *****
  • Posts: 1758
  • Pea-Wrangler
    • View Profile
Re: Give peas a chance!
« Reply #933 on: March 21, 2008, 09:42:10 pm »
Two thoughts occur at the moment:
Hanny's Voorwerp reminds me of some of the Blue Compact Dwarf Galaxies that also don't have a defined core.
And does the OIII peak end at the top of the spectral chart, or is it taller?
[Edit: NGC3314 said:
Quote
The higher of the two [O III] peaks does go somewhat "off the chart", the better to show the other weaker features. If you could see the rest of it, it would be three times as high as the other [O III] peak immediately to its left (blueward).

So that's about 1950 by my estimation; not the highest OIII peak we've seen, but a powerful one.]
« Last Edit: March 22, 2008, 04:06:54 am by starry nite »
Logged
Good news everyone!

Galaxy Hunters Inc

  • Full Member
  • ***
  • Posts: 181
  • Another day. another Galaxy.
    • View Profile
Re: Give peas a chance!
« Reply #934 on: March 22, 2008, 03:53:56 am »
Hey well spotted Starry
Kinda strange that the Voorwerp Kid and the Peakeeper should actually have a real connection.
Key the spooky music. DoDadodadoda.......
Sometimes i really wonder about statistical probability and chance. what are the odds?
Logged

Galaxy Hunters Inc

  • Full Member
  • ***
  • Posts: 181
  • Another day. another Galaxy.
    • View Profile
Re: Give peas a chance!
« Reply #935 on: March 22, 2008, 04:33:01 am »
These two peas are within a stones throw of each other but look totally different
GALAXY    ra=222.59430791, dec=11.40391546,   ObjId = 587736915142967315
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587736915142967315



Visually Doesn't look like a pea
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587736915142902073
GALAXY    ra=222.51435638, dec=11.37238526,   ObjId = 587736915142902073

« Last Edit: March 22, 2008, 11:08:58 am by Galaxy Hunters Inc »
Logged

christopherk

  • Sr. Member
  • ****
  • Posts: 263
  • 588017704012021788
    • View Profile
Re: Give peas a chance!
« Reply #936 on: March 22, 2008, 11:45:20 am »
Having not read through the entire thread (call me lazy – I can't be bothered to read 63 pages ;)) I may be wrong, but is this one?
Ref: 587739652107600089.


It's spectrum looks similar to some already posted
Logged
Boyle's law: The greater the external pressure, the greater the volume of hot air.

Hanny

  • Global Moderator
  • Hero Member
  • ****
  • Posts: 15566
  • "Voorwerp kid"
    • View Profile
    • www.hannysvoorwerp.com
Re: Give peas a chance!
« Reply #937 on: March 22, 2008, 11:46:06 am »
Just from looking at the first post (heh heh) yeah sure! ;)
Logged

starry nite

  • Hero Member
  • *****
  • Posts: 1758
  • Pea-Wrangler
    • View Profile
Re: Give peas a chance!
« Reply #938 on: March 22, 2008, 12:48:09 pm »
Previously-posted but a perfect pea.
Logged
Good news everyone!

ElisabethB

  • Hero Member
  • *****
  • Posts: 11940
    • View Profile
Re: Give peas a chance!
« Reply #939 on: March 22, 2008, 03:13:48 pm »
Logged

ElisabethB

  • Hero Member
  • *****
  • Posts: 11940
    • View Profile
Re: Give peas a chance!
« Reply #940 on: March 22, 2008, 03:27:06 pm »
posted in the mergers thread, but it has a nice pea chart
587735666923274244
Logged

Rick Nowell

Re: Give peas a chance!
« Reply #941 on: March 22, 2008, 05:50:06 pm »
Celebratory list; 106 and counting!

Listing For Green(ish) [OIII] ELGs up to 23/03/08. Apparently they are actually red.
Quote from: FermatsBrother on March 04, 2008, 05:42:16 pm
r' = detector "sees" actual red.    Screen display as green


Galaxies showing flat spectra except extreme peaks at OII-III, ionised oxygen.
Redshift range 0.144 - 0.354. The majority are found between 0.2 - 0.3, which is about 3-4 billion years ago.
Typical Spectrum:   http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587724199349387411   
Numerical Sorting of 106 galaxies, 14 with no NED ref.
     
Quote from: zookeeperKevin on December 14, 2007, 12:52:19 pm
      I wonder if the "pea selection" yields a sample of interesting objects....


      587724197202428120
      587724199349387411
      587724233716596882
      587724234248552589
      587724240158589061
      587724240687792239
      587724241767825591
      587725040100311301
      587725503949177426
      587725550133772480
      587725577499443655
      587725591460118965
      587725775069643261
      587725817496141992
      587726014549328120
      587726031184330774
      587726032255189192
      587726101492924832
      587726101493579972
      587727177929588906
      587727179006148758
      587727180076744832
      587727214417871520
      587728669342695728
      587728917372993708
      587728947977453768
      587729155208249539
      587729155743875234
      587729777439801619
      587729777446945029
      587729970180522426
      587731870165893326
      587731892187037787
      587732134315425958
      587732152033345685 
      587732152555864324
      587732153639829774
      587732156853846376
      587732578830713622
      587732578845786234
      587732702852743474
      587732772108435832
      587733399717413034
      587734691964780796
      587735042543386850
      587735343188934969
      587735428545380541
      587735696443506837
      587735696981426384
      587735696987717870
      587736803471261841
      587736915687375248
      587736915687964980
      587736962921857252
      587736976351822098  no ref...
      587738410863493299              z=0.144
      587738570853974145
      587739098597687419
      587739114708402325
      587739153352229578
      587739158190948542
      587739294549541044  no ref...
      587739305286697134
      587739377230610665
      587739406242742472
      587739406764540109
      587739408393044155
      587739505544528023
      587739506616631548  no ref...
      587739608086741136
      587739646210998382
      587739652107600089  no ref...
      587739721387409964  no ref...
      587739815320879621  no ref...  z=0.354
      587741421099286852  no ref...
      587741422173552932  no ref...
      587741490367889543  no ref...
      587741532770074773  no ref...
      587741533844865274  no ref...
      587741721214714062  no ref...
      587742014876745993  no ref...
      587742062133575945  no ref...
      588007003643773193
      588007005778411734
      588009365864972517
      588010137337200805
      588010358532800668
      588010360138367359
      588011218605179021
      588015507683344558
      588015509290877040
      588016891174912170
      588017114518257872
      588017570848768137
      588017605233016935
      588017606290178168
      588017720638570644
      588017721177800810
      588017721724502213
      588018054573457629
      588298663038943488
      588848898856648955
      588848899356230091
      588848899919446344
      588848899937141059
      588848900980015266 
      588848901003542800    no.106
« Last Edit: May 02, 2008, 09:03:28 am by Rick Nowell »
Logged

Galaxy Hunters Inc

  • Full Member
  • ***
  • Posts: 181
  • Another day. another Galaxy.
    • View Profile
Re: Give peas a chance!
« Reply #942 on: March 23, 2008, 02:03:57 am »
This is supposed to be a quasar star. Its chart is peaish.
I'm still not convinced that there isn't some formula stating that the OIII ( In my terms i think that means Triply ionised oxygen?) isn,t a certain percentage above the background.
These border line charts may tell us what processes are going on to go up to or come down from the supper high OIII? does anyone else think the same way? Sorry my chemistry stops at how much sugar to put in a cup of coffee. so I'm just guessing


This looks like a back to front chart
I don't fully understand z charts but Fermats Brother was saying that about .85 was the highest Z for a pea. The OIII seems at the wrong end of the chart
Maybe some one else understands? ( I,ve tried bashing my head against the wall it does't work for me, SIGH, LOL)
STAR    ra=208.06983235, dec=2.7573619,   ObjId = 587726033334567091
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587726033334567091



Sorry if this doesn't make sense. I think like a marble in a bucket. LOL
« Last Edit: March 23, 2008, 02:46:59 am by Galaxy Hunters Inc »
Logged

Galaxy Hunters Inc

  • Full Member
  • ***
  • Posts: 181
  • Another day. another Galaxy.
    • View Profile
Re: Give peas a chance!
« Reply #943 on: March 23, 2008, 02:43:46 am »
TAIL END OF OBJECT OF THE DAY  Saturday 22nd March
GALAXY    ra=236.72219399, dec=17.87267731,   ObjId = 587739810496708646
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739810496708646





New
Sadly another with the OII to far to the left
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739815316029666
GALAXY    ra=238.77772012, dec=20.92264841,   ObjId = 587739815316029666

Logged

FermatsBrother

  • Hero Member
  • *****
  • Posts: 2049
  • It's in the margin !
    • View Profile
Re: Give peas a chance!
« Reply #944 on: March 23, 2008, 12:33:42 pm »
Quote from: Galaxy Hunters Inc on March 23, 2008, 02:03:57 am
This is supposed to be a quasar star. Its chart is peaish.
I'm still not convinced that there isn't some formula stating that the OIII ( In my terms i think that means Triply ionised oxygen?) isn,t a certain percentage above the background.
These border line charts may tell us what processes are going on to go up to or come down from the supper high OIII? does anyone else think the same way? Sorry my chemistry stops at how much sugar to put in a cup of coffee. so I'm just guessing

This looks like a back to front chart
I don't fully understand z charts but Fermats Brother was saying that about .85 was the highest Z for a pea. The OIII seems at the wrong end of the chart
Maybe some one else understands? ( I,ve tried bashing my head against the wall it does't work for me, SIGH, LOL)
STAR    ra=208.06983235, dec=2.7573619,   ObjId = 587726033334567091
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587726033334567091

Sorry if this doesn't make sense. I think like a marble in a bucket. LOL

Hi Galaxy Hunters Inc - " .....the OIII ( In my terms i think that means Triply ionised oxygen?)". No !!
OI = unionised oxygen
OII = single ionised oxygen
OIII = double ionised oxygen
OIV = triple ionised oxygen etc..

"...understand z charts but Fermats Brother was saying that about .85 was the highest Z for a pea".
The "charts" are spectral charts with z "values"
What I said was, that this was the highest z value at which you will be able to see OIII peaks in the spectrum, because of the spectrum cut-off.

As for your comments on the attached chart; there's no OIII peak, just a little OII peak.

BTW Quasars aren't considered to be "stars"; they're QSOs.
Cheers - Fermats Brother
« Last Edit: March 23, 2008, 12:45:14 pm by FermatsBrother »
Logged
A spectrum, many spectra. A Supernova, many supernovae. A datum, many data. A nebula, many nebulae. SATELLITE.
 Fermats Brother
Pages: 1 ... 61 62 [63] 64 65 ... 176
« previous next »