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Faint dwarf galaxies in Fornax shed light on a cosmological mystery

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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

#535140 — Faint dwarf galaxies in Fornax shed light on a cosmological mystery

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 Muñoz and Thomas Puzia of Pontificia
> Universidad Católica 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.


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#535163

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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