Re: Faint dwarf galaxies in Fornax shed light on a cosmological mystery

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Subject	Re: Faint dwarf galaxies in Fornax shed light on a cosmological mystery
Date	Tue, 24 Nov 2015 20:12:04 -0000
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Sam Wormley <swormley1@gmail.com> wrote:
> Faint dwarf galaxies in Fornax shed light on a cosmological mystery
>> http://phys.org/news/2015-11-faint-dwarf-galaxies-fornax-cosmological.html
> 
> 
>> An astonishing number of faint low surface brightness dwarf galaxies
>> recently discovered in the Fornax cluster of galaxies may help to
>> solve the long-standing cosmological mystery of "The Missing
>> Satellites". The discovery, made by an international team of
>> astronomers led by Roberto Mu?oz and Thomas Puzia of Pontificia
>> Universidad Cat?lica de Chile, was carried out using the Dark Energy
>> Camera (DECam) on the 4-m Blanco telescope at Cerro Tololo
>> Inter-American Observatory (CTIO). CTIO is operated by the National
>> Optical Astronomy Observatory (NOAO).
>>
>> Computer simulations of the evolution of the matter distribution in
>> the Universe predict that dwarf galaxies should vastly outnumber
>> galaxies like the Milky Way, with hundreds of low mass dwarf galaxies
>> predicted for every Milky Way-like galaxy. The apparent shortage of
>> dwarf galaxies relative to these predictions, "the missing satellites
>> problem," could imply that the cosmological simulations are wrong or
>> that the predicted dwarf galaxies have simply not yet been
>> discovered. The discovery of numerous faint dwarf galaxies in Fornax
>> suggests that the "missing satellites" are now being found.
>>
>> The discovery, recently published in the Astrophysical Journal, comes
>> as one of the first results from the Next Generation Fornax Survey
>> (NGFS), a study of the central 30 square degree region of the Fornax
>> galaxy cluster using optical imaging with DECam and near-infrared
>> imaging with ESO's VISTA/VIRCam. The Fornax cluster, located at a
>> distance of 62 million light-years, is the second richest galaxy
>> cluster within 100 million light-years after the much richer Virgo
>> cluster.
 
Beware of the Fornax monsters.
 

-- 
Jim Pennino

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Faint dwarf galaxies in Fornax shed light on a cosmological mystery Sam Wormley <swormley1@gmail.com> - 2015-11-24 13:51 -0600
  Re: Faint dwarf galaxies in Fornax shed light on a cosmological mystery jimp@specsol.spam.sux.com - 2015-11-24 20:12 +0000

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