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  #3391 (permalink)  
Old 23-December-2007, 05:10 AM
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6. A variable star is correct.
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  #3392 (permalink)  
Old 23-December-2007, 06:35 AM
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Is its variable nature connected with the fact that it forms a very close binary?
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  #3393 (permalink)  
Old 23-December-2007, 06:08 PM
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7. It is a binary star.
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Old 23-December-2007, 06:58 PM
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Quote:
Originally Posted by Dave Mitsky View Post
1. The object is not bigger than a cubic light year.
2. In the strictest sense of the term, it would not be greater in apparent size than 30' at 1 a.u., to the best of my knowledge.
3. Yes, the "object" is spherical.
4. It does not lie within 1 light-year of the Sun.
5. Nuclear fusion is currently occuring and has occurred in the past.
6. A variable star is correct.
7. It is a binary star.
For clarification, by "binary star", you mean your object is only one of the two stars, right?

Are both stars active in fusion (non-white dwarfs or neutron stars)?
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Lighten up! This is a stellar board! Author: duh.

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  #3395 (permalink)  
Old 23-December-2007, 09:43 PM
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8. No, that's not right and I consider that to be a separate question.

9. No.
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  #3396 (permalink)  
Old 23-December-2007, 10:42 PM
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Quote:
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8. No, that's not right and I consider that to be a separate question.

Fair enough. That's why I like this thread, I never bothered to ask anyone if star could be used in a plural meaning. A binary star is two stars. I think I've always ducked it by stating it as a binary star system, instead.

[We should have an astronomical quirks thread? ]

Is one a black hole?
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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.
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  #3397 (permalink)  
Old 25-December-2007, 02:10 AM
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10. One of the components is not a black hole.
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  #3398 (permalink)  
Old 25-December-2007, 03:07 AM
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is that like the riddle "two coins add up to .30, but one of them is not a nickel"?

((this question isn't part of the quiz just rhetorical))
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Old 25-December-2007, 07:19 AM
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Is it an X-ray binary?
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Old 25-December-2007, 01:39 PM
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11. Yes, it is an x-ray binary.
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Old 27-December-2007, 03:17 PM
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Is it a low mass x-ray binary?
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Lighten up! This is a stellar board! Author: duh.

"The Sun, with all the planets revolving around it, and depending on it, can still ripen a bunch of grapes as though it had nothing else in the universe to do..." Author: Galileo supposedly.
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  #3402 (permalink)  
Old 28-December-2007, 03:25 PM
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12. I can't find any information on the masses of the component stars but I believe it is safe to assume that at least one of them is not very massive.
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  #3403 (permalink)  
Old 29-December-2007, 10:18 AM
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Is it in the Milky Way Galaxy?
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Old 29-December-2007, 02:12 PM
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13. Yes, it's a denizen of the Milky Way.
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Old 29-December-2007, 04:51 PM
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Does it reside in a globular cluster?
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  #3406 (permalink)  
Old 29-December-2007, 07:35 PM
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14. The binary in question is not part of a globular cluster.
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Old 29-December-2007, 08:59 PM
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Dave, since it appears that low- and high mass X-ray binaries have different mechanisms, could you try to clarify your answer to question 12? Here is a page about the distinction between the two types.
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  #3408 (permalink)  
Old 30-December-2007, 08:27 PM
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The system in question does not strictly fit into either category as defined on that web site, Arneb.
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  #3409 (permalink)  
Old 31-December-2007, 07:27 AM
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Is it a microquasar?
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  #3410 (permalink)  
Old 31-December-2007, 03:36 PM
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15. It is not a microquasar.

I'll drop a hint. The system is similar in some respects to a low-mass x-ray binary.
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  #3411 (permalink)  
Old 31-December-2007, 04:25 PM
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Is it a Soft X-Ray Transient?
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