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Main Sequence Stellar Mass Function?



 
 
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  #21  
Old November 3rd 08, 07:18 AM posted to rec.arts.sf.science,sci.astro
Erik Max Francis
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Posts: 345
Default Main Sequence Stellar Mass Function?

BradGuth wrote:

Why couldn't a white dwarf eventually become a massive but small brown
dwarf?


Because that's not what the words mean. What's one mile north of the
North Pole? What exists inside a thing which doesn't exist? Why
couldn't a feeling of dread become an earthworm? Why couldn't an old
man become a zygote? Why couldn't this chair become a galaxy? Why do
you still crosspost your crank **** here?

--
Erik Max Francis && && http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M erikmaxfrancis
The mightiest rivers lose their force when split up into several
streams. -- Ovid
  #22  
Old November 3rd 08, 10:15 AM posted to rec.arts.sf.science,sci.astro
Eivind
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Default Main Sequence Stellar Mass Function?

BradGuth skreiv:

"or" perhaps you're merely unable to deductively think outside the
box.


One should keep an open mind -- but not so open that the brain falls
out. We say in Norwegian, dunno how well that translates, but you get
the idea, or not.

What if the universe is 135 billion years old, or actually much older?


What if I'm a pumpkin ? It's not worthwhile to spend a lot of energy
adjusting theories to acount for "what-ifs" where there is zero evidence
pointing in that direction.


Eivind
  #23  
Old November 3rd 08, 10:37 AM posted to rec.arts.sf.science,sci.astro
Erik Max Francis
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Posts: 345
Default Main Sequence Stellar Mass Function?

Eivind wrote:

BradGuth skreiv:

"or" perhaps you're merely unable to deductively think outside the
box.


One should keep an open mind -- but not so open that the brain falls
out. We say in Norwegian, dunno how well that translates, but you get
the idea, or not.


The same idiom is used routinely in American English -- almost verbatim,
actually.

--
Erik Max Francis && && http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M erikmaxfrancis
The multitude of books is making us ignorant.
-- Voltaire
  #24  
Old November 3rd 08, 02:07 PM posted to rec.arts.sf.science,sci.astro
BradGuth
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Posts: 21,544
Default Main Sequence Stellar Mass Function?

On Nov 2, 11:18 pm, Erik Max Francis wrote:
BradGuth wrote:
Why couldn't a white dwarf eventually become a massive but small brown
dwarf?


Because that's not what the words mean. What's one mile north of the
North Pole? What exists inside a thing which doesn't exist? Why
couldn't a feeling of dread become an earthworm? Why couldn't an old
man become a zygote? Why couldn't this chair become a galaxy? Why do
you still crosspost your crank **** here?

--
Erik Max Francis && &&http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M erikmaxfrancis
The mightiest rivers lose their force when split up into several
streams. -- Ovid


Just because your universe is only 13.5 billion years old isn't my
fault.

To me a brown dwarf can just as easily be and old white dwarf instead
of a 10x Jupiter.

What else should we call an old white dwarf? (a dull dwarf?, a cold
dwarf?)

~ BG
  #25  
Old November 3rd 08, 02:08 PM posted to rec.arts.sf.science,sci.astro
BradGuth
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Posts: 21,544
Default Main Sequence Stellar Mass Function?

On Nov 3, 2:15 am, Eivind wrote:
BradGuth skreiv:

"or" perhaps you're merely unable to deductively think outside the
box.


One should keep an open mind -- but not so open that the brain falls
out. We say in Norwegian, dunno how well that translates, but you get
the idea, or not.

What if the universe is 135 billion years old, or actually much older?


What if I'm a pumpkin ? It's not worthwhile to spend a lot of energy
adjusting theories to acount for "what-ifs" where there is zero evidence
pointing in that direction.

Eivind


Are your Norwegian private parts getting a little too cold?

~ BG
  #26  
Old November 3rd 08, 04:35 PM posted to rec.arts.sf.science,sci.astro
BradGuth
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Posts: 21,544
Default Main Sequence Stellar Mass Function?

On Oct 31, 8:16 am, Raghar wrote:
On Oct 31, 5:19 am, Erik Max Francis wrote:

Raghar wrote:
These numbers are more or less correct from about 5 years ago. You can
adjust them for newer solar catalogs, and do number crunching again if
you need a correct table.


Ignoring the formatting problem, note that the masses given are only for
main sequence stars, so it neglects white dwarfs, as well as all
late-evolution stars. These are less common than main sequence stars,
but their exclusion will significantly distort the overall numbers.


Sorry about that pesky formating problem. It's hard to do tables on
the usenet.

You want to integrate along the initial mass function to get a more
accurate figure, and then adjust for stellar evolution.


Actually in computer games, the most important thing are the main
sequence stars. While it might be convenient to have probabilities
even for white dwarfs and other excluded stuff, in majority of
computer games they don't interact thus they are irrelevant as
anything else as decoration, in the rest games the numbers could be
fudged easily.

A perfect paper for computer games would have a table with
probabilities of main sequence stars, and probabilities of the rest of
the stuff with respect to the amount of main seqence stars.

Aka type number/1000
WD a
BH b


How about a game of Sirius B going red giant postal and then flashing
itself over into a white dwarf, losing its tidal radius grip on all of
its planets?

Is there any reason why Sirius B at 6 to 7 solar mass couldn't have
had Earth and Venus like planets, or even a trinary companion star
exactly like a certain main sequence that we call our sun?

~ BG
  #27  
Old November 3rd 08, 09:04 PM posted to rec.arts.sf.science,sci.astro
Erik Max Francis
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Posts: 345
Default Main Sequence Stellar Mass Function?

BradGuth wrote:

On Nov 2, 11:18 pm, Erik Max Francis wrote:
BradGuth wrote:
Why couldn't a white dwarf eventually become a massive but small brown
dwarf?

Because that's not what the words mean. What's one mile north of the
North Pole? What exists inside a thing which doesn't exist? Why
couldn't a feeling of dread become an earthworm? Why couldn't an old
man become a zygote? Why couldn't this chair become a galaxy? Why do
you still crosspost your crank **** here?

Just because your universe is only 13.5 billion years old isn't my
fault.


I'm reminded of a character from the comedy show NewsRadio: "Don't
confuse me with the facts!"

To me a brown dwarf can just as easily be and old white dwarf instead
of a 10x Jupiter.


Perhaps, if you don't know what the terms actually mean as used by
astronomers. Which you obviously don't. But then, effective
communication is not exactly high on your list of priorities.

What else should we call an old white dwarf? (a dull dwarf?, a cold
dwarf?)


There's already a name for that: a black dwarf.

--
Erik Max Francis && && http://www.alcyone.com/max/
San Jose, CA, USA && 37 18 N 121 57 W && AIM, Y!M erikmaxfrancis
Golf is a good walk spoiled.
-- Mark Twain
  #28  
Old November 4th 08, 12:50 AM posted to rec.arts.sf.science,sci.astro
BradGuth
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Posts: 21,544
Default Main Sequence Stellar Mass Function?

On Nov 3, 1:04 pm, Erik Max Francis wrote:
BradGuth wrote:
On Nov 2, 11:18 pm, Erik Max Francis wrote:
BradGuth wrote:
Why couldn't a white dwarf eventually become a massive but small brown
dwarf?
Because that's not what the words mean. What's one mile north of the
North Pole? What exists inside a thing which doesn't exist? Why
couldn't a feeling of dread become an earthworm? Why couldn't an old
man become a zygote? Why couldn't this chair become a galaxy? Why do
you still crosspost your crank **** here?

Just because your universe is only 13.5 billion years old isn't my
fault.


I'm reminded of a character from the comedy show NewsRadio: "Don't
confuse me with the facts!"

To me a brown dwarf can just as easily be and old white dwarf instead
of a 10x Jupiter.


Perhaps, if you don't know what the terms actually mean as used by
astronomers. Which you obviously don't. But then, effective
communication is not exactly high on your list of priorities.

What else should we call an old white dwarf? (a dull dwarf?, a cold
dwarf?)


There's already a name for that: a black dwarf.


It takes a great deal of time to reach the black dwarf phase.
Somewhere in between white and black is brown.

~ BG
  #29  
Old November 4th 08, 02:34 AM posted to rec.arts.sf.science,sci.astro
Michael Ash
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Posts: 128
Default Main Sequence Stellar Mass Function?

In rec.arts.sf.science BradGuth wrote:
On Nov 3, 1:04 pm, Erik Max Francis wrote:
BradGuth wrote:
On Nov 2, 11:18 pm, Erik Max Francis wrote:
BradGuth wrote:
Why couldn't a white dwarf eventually become a massive but small brown
dwarf?
Because that's not what the words mean. What's one mile north of the
North Pole? What exists inside a thing which doesn't exist? Why
couldn't a feeling of dread become an earthworm? Why couldn't an old
man become a zygote? Why couldn't this chair become a galaxy? Why do
you still crosspost your crank **** here?
Just because your universe is only 13.5 billion years old isn't my
fault.


I'm reminded of a character from the comedy show NewsRadio: "Don't
confuse me with the facts!"

To me a brown dwarf can just as easily be and old white dwarf instead
of a 10x Jupiter.


Perhaps, if you don't know what the terms actually mean as used by
astronomers. Which you obviously don't. But then, effective
communication is not exactly high on your list of priorities.

What else should we call an old white dwarf? (a dull dwarf?, a cold
dwarf?)


There's already a name for that: a black dwarf.


It takes a great deal of time to reach the black dwarf phase.
Somewhere in between white and black is brown.


Wow, you don't even share common vocabulary for *colors*? Astounding. Here
in reality, we call the colors which exist between white and black "gray".
(Or for our bretheren who speak the Queen's English, "grey".) Brown
requires an additional tint of yellow, orange or red to be added.

--
Mike Ash
Radio Free Earth
Broadcasting from our climate-controlled studios deep inside the Moon
  #30  
Old November 4th 08, 04:18 AM posted to rec.arts.sf.science,sci.astro
Golden California Girls
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Posts: 210
Default Main Sequence Stellar Mass Function?

Michael Ash wrote:
In rec.arts.sf.science BradGuth wrote:
On Nov 3, 1:04 pm, Erik Max Francis wrote:
BradGuth wrote:
On Nov 2, 11:18 pm, Erik Max Francis wrote:
BradGuth wrote:
Why couldn't a white dwarf eventually become a massive but small brown
dwarf?
Because that's not what the words mean. What's one mile north of the
North Pole? What exists inside a thing which doesn't exist? Why
couldn't a feeling of dread become an earthworm? Why couldn't an old
man become a zygote? Why couldn't this chair become a galaxy? Why do
you still crosspost your crank **** here?
Just because your universe is only 13.5 billion years old isn't my
fault.
I'm reminded of a character from the comedy show NewsRadio: "Don't
confuse me with the facts!"

To me a brown dwarf can just as easily be and old white dwarf instead
of a 10x Jupiter.
Perhaps, if you don't know what the terms actually mean as used by
astronomers. Which you obviously don't. But then, effective
communication is not exactly high on your list of priorities.

What else should we call an old white dwarf? (a dull dwarf?, a cold
dwarf?)
There's already a name for that: a black dwarf.

It takes a great deal of time to reach the black dwarf phase.
Somewhere in between white and black is brown.


Wow, you don't even share common vocabulary for *colors*? Astounding. Here
in reality, we call the colors which exist between white and black "gray".
(Or for our bretheren who speak the Queen's English, "grey".) Brown
requires an additional tint of yellow, orange or red to be added.


Gosh someone who doesn't know what blackbody radiation is.


 




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