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Date: 19 Aug 2007 20:46:30
From: I.N. Galidakis
Subject: Mean Star Density of MW
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Does anyone know (or have refs) for the "mean star density" of the Milky Way?
Alternatively forms of data are ok: stars/ly^3 or stars/pc^3 or stars/AU^3.
Many thanks!
--
I.N. Galidakis
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Date: 19 Aug 2007 18:47:24
From: Ed Holden
Subject: Re: Mean Star Density of MW
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"I.N. Galidakis" <morpheus@olympus.mons > wrote:
> Does anyone know (or have refs) for the "mean star density" of the Milky Way?
From http://zebu.uoregon.edu/~imamura/123/lecture-2/bulge.html :
"The core harbors ~ 1,600 stars per cubic light year. This is several
hundred thousand times as dense as the average stellar density of our
Galaxy! In the Solar neighborhood, stars are found roughly every 5 light
years. In the galactic center, stars are roughly 0.1 light years apart."
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Date: 19 Aug 2007 20:05:32
From: Mk2
Subject: Re: Mean Star Density of MW
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>
> "The core harbors ~ 1,600 stars per cubic light year. This is several
> hundred thousand times as dense as the average stellar density of our
> Galaxy! In the Solar neighborhood, stars are found roughly every 5 light
> years. In the galactic center, stars are roughly 0.1 light years apart."
must be a well lite up place....
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Date: 19 Aug 2007 22:12:43
From: Paul Schlyter
Subject: Re: Mean Star Density of MW
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In article <go1yi.82026$Io4.55550@edtnps89 >, Mk2 <mk@tnospam.net> wrote:
>> "The core harbors ~ 1,600 stars per cubic light year. This is several
>> hundred thousand times as dense as the average stellar density of our
>> Galaxy! In the Solar neighborhood, stars are found roughly every 5 light
>> years. In the galactic center, stars are roughly 0.1 light years apart."
>
> must be a well lite up place....
Indeed! The "night" sky there would be about as bright as the daytime sky of
the Earth!!!! Any inhabitants there would be unable to observe anything
except its neighbourhood of stars.
--
----------------------------------------------------------------
Paul Schlyter, Grev Turegatan 40, SE-114 38 Stockholm, SWEDEN
e-mail: pausch at stockholm dot bostream dot se
WWW: http://stjarnhimlen.se/
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Date: 24 Aug 2007 00:43:57
From: Brian Tung
Subject: ASTRO: Mean Star Density of MW
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Paul Schlyter wrote:
> Indeed! The "night" sky there would be about as bright as the daytime sky of
> the Earth!!!! Any inhabitants there would be unable to observe anything
> except its neighbourhood of stars.
Either Night Sky or Sky and Telescope, in one of its semi-recent issues
(within the last year or two) had a question in the Q&A page that
addressed the night sky in the center of the galaxy. I want to say
that the expected limiting magnitude was in the neighborhood of 0, but
I can't say for sure.
--
Brian Tung <brian@isi.edu >
The Astronomy Corner at http://astro.isi.edu/
Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/
The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/
My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.html
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