Page 1 of 2 12 LastLast
Results 1 to 10 of 16
Like Tree45Likes

Thread: Star clusters

  1. #1
    Eagleheaf's Avatar
    Eagleheaf is offline Banned
    Points: 28,244, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 29.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Feb 2017
    Location
    Oakwood, Illinois
    Posts
    4,473
    Points
    28,244
    Level
    100
    Thanks
    3,285
    Thanked 2,216x 1,540 Posts
    Downloads
    6
    Uploads
    0

    Default Star clusters



    From an astrophysics perspective I have a question and it is this. Are star clusters uniform in their properties of magnetic field, origin...stuff I don't even understand but I'm wondering if there is a uniformity to them that explains their existence or are they just a an artifact that we don't really care about how they came in to be they're just there to look at?
    Sorry for this sonewhat nebulous question. I have no arguement. I am simply interested in knowing if there is something to know.
    :-)
    j.gardavsky likes this.

  2. The Following 3 Users Say Thank You to Eagleheaf For This Useful Post:

    chas53 (04-12-2017),michael131313 (04-13-2017),stargazer55 (04-13-2017)

  3. #2
    Eagleheaf's Avatar
    Eagleheaf is offline Banned
    Points: 28,244, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 29.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Feb 2017
    Location
    Oakwood, Illinois
    Posts
    4,473
    Points
    28,244
    Level
    100
    Thanks
    3,285
    Thanked 2,216x 1,540 Posts
    Downloads
    6
    Uploads
    0

    Default Re: Star clusters

    Ok. I Should have looked in wiki first. Sorry. I found my answer. :-)

  4. The Following User Says Thank You to Eagleheaf For This Useful Post:

    chas53 (04-12-2017)

  5. #3
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is offline HYPER GIANT
    Points: 153,666, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.7%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    18,869
    Points
    153,666
    Level
    100
    Thanks
    6,895
    Thanked 41,219x 13,104 Posts
    Blog Entries
    49
    Downloads
    0
    Uploads
    0

    Default Re: Star clusters

    Would you care to share?

  6. The Following 2 Users Say Thank You to not_Fritz_Argelander For This Useful Post:

    chas53 (04-12-2017),michael131313 (04-13-2017)

  7. #4
    Eagleheaf's Avatar
    Eagleheaf is offline Banned
    Points: 28,244, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 29.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Feb 2017
    Location
    Oakwood, Illinois
    Posts
    4,473
    Points
    28,244
    Level
    100
    Thanks
    3,285
    Thanked 2,216x 1,540 Posts
    Downloads
    6
    Uploads
    0

    Default Re: Star clusters

    Well, so far I discovered there are open clusters and they are not as dense and have fewer stars in them. Globular clusters are much more dense and the have many more stars.
    Open clusters...if I understand correctly...are on the same plain...open clusters supposed to be 30 light years across...they have a few hundred stars. They are younger than globulars. I observed M44 last night and M44 is an open cluster. Nothing spectacular here...Learning is the best part of any activity. I know so little about this subject I am sure I will never run out of things to pursue.
    The gravity is supposed to be different in open clusters. Less force. Globulars are more dense and stuck together.
    You know all this...but it is fun for me to tell it.
    Thank you not-Fritz for asking.
    I also found an article about Messier and his list with all the galactic addresses. Cool stuff.
    But this is probably not really astrophysics. Should have put this question in beginner forum.
    I do like reading the threads here though.
    Thanks again.

  8. The Following 2 Users Say Thank You to Eagleheaf For This Useful Post:

    bladekeeper (04-13-2017),michael131313 (04-13-2017)

  9. #5
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is offline HYPER GIANT
    Points: 153,666, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.7%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    18,869
    Points
    153,666
    Level
    100
    Thanks
    6,895
    Thanked 41,219x 13,104 Posts
    Blog Entries
    49
    Downloads
    0
    Uploads
    0

    Default Re: Star clusters

    Not a worry about posting here. If you have a question here is as good a place to ask as any. A very important aspect of clusters is that since they are made of stars formed at the same time they allow us to test our ideas of how stars age.

  10. The Following User Says Thank You to not_Fritz_Argelander For This Useful Post:

    michael131313 (04-13-2017)

  11. #6
    Bigzmey's Avatar
    Bigzmey is offline HYPER GIANT
    Points: 32,846, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 53.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Sep 2015
    Location
    San Diego, California, USA
    Posts
    6,059
    Points
    32,846
    Level
    100
    Thanks
    1,419
    Thanked 2,461x 1,827 Posts
    Downloads
    0
    Uploads
    0

    Default Re: Star clusters

    As far as open clusters goes Beehive (M44) is one of the most spectacular out there. But I can see how moon and sky conditions can wash out the details and make it dull looking. You should revisit when moon is not around.
    Scopes: Celestron: 8" SCT F10, Omni 150R Achro F5, Onyx 80ED F6.3; ES: 127mm CF F7.5 APO. Mounts: ES Twilight I, Bresser EXOS2, SW SkyTee2, UA MicroStar. Binos: Orion 10x50, Celestron 8x42. EPs: TeleVue: Delites, Plossls & barlows; ES: 82os & 68os; Vixen: SLVs, LVW & NPLs; Baader: BCOs & Aspherics; Meade: UWAs & Plossls; Celestron: X-Cel LXs, Luminos. Filters: Astronomik: UHC; Lumicon: OIII, H-beta, DeepSky; Baader: UHC-S, M&SG, CB; Orion: UltraBlock, SG. DSO tally: 1021 (H400-1: 400, H400-2: 190, H300-3: 67; M110: 110, S110: 73). Doubles: 614, Comets: 8, Asteroids: 42
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.

  12. #7
    Eagleheaf's Avatar
    Eagleheaf is offline Banned
    Points: 28,244, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 29.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Feb 2017
    Location
    Oakwood, Illinois
    Posts
    4,473
    Points
    28,244
    Level
    100
    Thanks
    3,285
    Thanked 2,216x 1,540 Posts
    Downloads
    6
    Uploads
    0

    Default Re: Star clusters

    Definately will revisit...many times... and yes Fritz...that was another thing I read...they are important because of what can be learned ...and I think a couple of them were triangulated and allowed ability to estimate distances...I think due in some way to the luminance of the ones that were triangulated...i could be mixing this up a bit.

  13. #8
    not_Fritz_Argelander's Avatar
    not_Fritz_Argelander is offline HYPER GIANT
    Points: 153,666, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.7%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Awards:
    Thread Award
    Join Date
    Jul 2011
    Location
    US
    Posts
    18,869
    Points
    153,666
    Level
    100
    Thanks
    6,895
    Thanked 41,219x 13,104 Posts
    Blog Entries
    49
    Downloads
    0
    Uploads
    0

    Default Re: Star clusters

    The Hyades and Pleiades clusters can be measured directly by triangulation. More distant clusters have distances from luminosity based on the triangulation of Hyades and Pleiades.

  14. The Following 2 Users Say Thank You to not_Fritz_Argelander For This Useful Post:

    Eagleheaf (04-13-2017),michael131313 (04-13-2017)

  15. #9
    Eagleheaf's Avatar
    Eagleheaf is offline Banned
    Points: 28,244, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 29.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Feb 2017
    Location
    Oakwood, Illinois
    Posts
    4,473
    Points
    28,244
    Level
    100
    Thanks
    3,285
    Thanked 2,216x 1,540 Posts
    Downloads
    6
    Uploads
    0

    Default Re: Star clusters

    Yes...that is what I was understanding but very poorly stated in what I said earlier.

  16. #10
    SpaceMarine's Avatar
    SpaceMarine is offline Bright Giants
    Points: 6,575, Level: 56
    Level completed: 13%, Points required for next Level: 175
    Overall activity: 1.0%
    Achievements:
    5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!2 Posts Achievement20 Posts Achievement!
    Join Date
    Mar 2012
    Location
    Malaysia
    Posts
    273
    Points
    6,575
    Level
    56
    Thanks
    69
    Thanked 78x 62 Posts
    Downloads
    1
    Uploads
    0

    Default Re: Star clusters

    Are star clusters really 'clusters'?? Or are they seen as clusters from our position on Earth ..e.g The Orion. We may make out the shape of a Hunter, but in fact, all the stars in that constellation are of different distances from each other. Just asking.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
    Celestron Nexstar 4SE, Altzimuth mount.
    Celestron Power Tank. 6mm, 8mm, 13mm, 17mm, 25mm & 32mm lens, 2XBarlow Celestron Narrowband OIII Filter.
    Neximage CCD, Canon. Nikon P520. Digital Camera T- Adapter. Nikon D80 DSLR. Registax 6, Deep Sky stacker, iPhoto.
    Site:
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
    spacemarine69

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. Which lens to see DSO like M89 and other star clusters?
    By JohnnyScience in forum Catadioptric Telescope Forum
    Replies: 4
    Last Post: 05-03-2015, 01:06 PM
  2. Help with star clusters?
    By vanislandmike in forum Astronomy Beginners Forum
    Replies: 8
    Last Post: 04-02-2011, 03:31 AM
  3. Some Star Clusters and a Galaxy
    By budguinn in forum Astrophotography Forum
    Replies: 3
    Last Post: 11-21-2009, 10:58 PM
  4. What are your favorite star clusters?
    By DizzyGazer in forum General Stargazing Forum
    Replies: 10
    Last Post: 03-13-2009, 09:36 PM
  5. M-47, Open Star Cluster in Puppis; plus star clusters NGC 2423 and NGC 2425
    By George Normandin in forum Astrophotography Forum
    Replies: 3
    Last Post: 03-04-2008, 05:25 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin« Version 4.2.0
Powered by vBulletin«
All times are GMT. The time now is 01:29 PM.