Author Topic: Quasi-Stellar radio sources. Find a Quasar? Post it here!  (Read 287888 times)

cpt.Bear

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Quasi-Stellar radio sources. Find a Quasar? Post it here!
« on: August 13, 2007, 06:38:33 pm »
This is the first Quasar I found.



z=.851


Galaxy Ref: 587734623246614577

Anyone else have any?
.................. I use many ellipse.

massimogrieco

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #1 on: August 14, 2007, 11:50:07 am »
Hello.

Sorry for my orrible english!

I have 2 questions:

1) why the star in object is a quasar?

2) in the parameters of galaxyes what is the red shift factor? I think if a object do'nt have red shift is a star, if have red shift is a galaxy. Is correct? Bat...
...wath is red shift?

Please if you write a response use simple terms and simple syntax  :-[

Thank you

Massimo
massimogrieco@yahoo.it

fluffyporcupine

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #2 on: August 14, 2007, 11:55:12 am »
Hi massimo, welcome to the zoo! redshift is a value of how far away the object is from us most values are less than 1. here is some innfo on red shift. a red shift of z=0 basically means it is in our galaxy, but not all objects in the database have a redshift value. here is a thread on quasars. They are basically very active star forming regions at the centre of a galaxy. We can often see the quasar but not the galaxy it is in as it is so bright. Hope this helps!

massimogrieco

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #3 on: August 14, 2007, 12:11:13 pm »
thanks awfully for our explication.
If i have other doubts i write in this post, if this do'nt displeases.

Massimo

doomrevival

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #4 on: August 14, 2007, 12:14:25 pm »
Here's another couple sites to read about redshifts.  While it is a measure of how far things are from us, it is actually a measure of how they are moving away from us, thus one of the fundamental points of the Big Bang theory.  You can read about it more here - http://en.wikipedia.org/wiki/Redshift.  Also, here's an article on quasars. http://en.wikipedia.org/wiki/Quasars. Enjoy
The question is not how far.  The question is... do you possess the constitution, the depth of faith, to go as far is as needed...

It has to start someplace, it has to start sometime.  What better place than here, what better time than now?

gtomescu

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #5 on: August 14, 2007, 06:11:25 pm »
I hope I found one this time  ;D

http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739304213479633

PrimTarget TARGET_QSO_HIZ 

Looks kinda dim, but z=1.062!

Highest redshift I found till now on SDSS, greater than 1.
The spectral analysis also points to a quasar.

It doesn't look that different from the other green blob I found and posted in a different thread
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587735663162163370
But the second one seems it's not a quasar, the spectral image doesn't have big spikes (I'm still not 100% convinced it's not a quasar  ::) the redshift is also big - 0.427 )

serpens

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #6 on: August 14, 2007, 06:27:46 pm »
I hope I found one this time  ;D

http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739304213479633

PrimTarget TARGET_QSO_HIZ 

Looks kinda dim, but z=1.062!

Highest redshift I found till now on SDSS, greater than 1.
The spectral analysis also points to a quasar.

I'm not convinced about this one. Looking at the zConf value, you'll see that the redshift is extremely uncertain. I can't say it isn't a quasar for sure, it's just rather unlikely. Might as well be a giant elliptical galaxy... well, this is a tough one.

BUT... check the blue blob in the upper right corner!

doomrevival

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #7 on: August 14, 2007, 06:28:50 pm »
ahhhh, beat me to it.
The question is not how far.  The question is... do you possess the constitution, the depth of faith, to go as far is as needed...

It has to start someplace, it has to start sometime.  What better place than here, what better time than now?

gtomescu

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #8 on: August 14, 2007, 06:56:28 pm »
Lool  ;D

I think maybe it has a chance to be a quasar, looking at the spectral image.

But I didn't realized the one in the corner may probably have better chances. Need to go to sleep  ;)

This is the one in the corner
http://cas.sdss.org/astro/en/tools/explore/obj.asp?id=587739304213479478

z=1.443 - even higher.
TARGET_QSO_CAP
The spectral image sais z=1.4429+/-0.0023 - QSO.

doomrevival

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #9 on: August 14, 2007, 06:59:04 pm »
that's the biggest redshift i've seen...
The question is not how far.  The question is... do you possess the constitution, the depth of faith, to go as far is as needed...

It has to start someplace, it has to start sometime.  What better place than here, what better time than now?


galaxybabe

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #11 on: August 14, 2007, 08:51:11 pm »
Doh!
I've had lots of quasars, but never noted any of them :(

Do you want the pictures uploading? Or just the link with details (SDSS page)?

galaxybabe

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #12 on: August 14, 2007, 09:56:58 pm »
http://cas.sdss.org/astro/en/tools/chart/chart.asp?ra=169.1045908&dec=47.82063833
zStatus XCORR_EMLINE
zWarning NOT_QSO 
PrimTarget TARGET_QSO_CAP 

I don't understand any of the boxes, so just tell me what info you'd like me to post?

cpt.Bear

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #13 on: August 15, 2007, 03:39:36 am »
I think the data that should be placed is:

(
The image...
z:
zConfl:
)

That should be adequate....

Most of that information can be offered in the mass spectrometer along with the image I believe... That provides both the z & the zConf along with lots of other juicy info....

.................. I use many ellipse.

galaxybabe

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Re: Quasi-Stellar radio sources. Find a Quasar? Post it here!
« Reply #14 on: August 15, 2007, 06:12:53 am »
I think the data that should be placed is:

(
The image...
z:
zConfl:
)

That should be adequate....

Most of that information can be offered in the mass spectrometer along with the image I believe... That provides both the z & the zConf along with lots of other juicy info....


...and the URL to the SDSS page?