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Re: Spirals in dust around young stars may betray presence of massive planets

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Sam Wormley <swormley1@gmail.com> wrote:
> Spirals in dust around young stars may betray presence of massive planets

Yet again astronomy news to the physics discussion group and not to
any of the astronomy groups.


>> http://phys.org/news/2015-10-spirals-young-stars-betray-presence.html

Anyone wanting to be kept up to date can simply subscribe to the RSS
feed; no one needs you to cut and paste.

>> A team of astronomers is proposing that huge spiral patterns seen
>> around some newborn stars, merely a few million years old (about one
>> percent our sun's age), may be evidence for the presence of giant
>> unseen planets. This idea not only opens the door to a new method of
>> planet detection, but also could offer a look into the early
>> formative years of planet birth.
>>
>> Though astronomers have cataloged thousands of planets orbiting other
>> stars, the very earliest stages of planet formation are elusive
>> because nascent planets are born and embedded inside vast,
>> pancake-shaped disks of dust and gas encircling newborn stars, known
>> as circumstellar disks.
>>
>> The conclusion that planets may betray their presence by modifying
>> circumstellar disks on large scales is based on detailed computer
>> modeling of how gas-and-dust disks evolve around newborn stars, which
>> was conducted by two NASA Hubble Fellows, Ruobing Dong of Lawrence
>> Berkeley National Laboratory, and Zhaohuan Zhu of Princeton
>> University. Their research was published in the Aug. 5 edition of The
>> Astrophysical Journal Letters.

Summary: Giant planets may cause observable gravity effects.
 

-- 
Jim Pennino

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Spirals in dust around young stars may betray presence of massive planets Sam Wormley <swormley1@gmail.com> - 2015-10-29 17:05 -0500
  Re: Spirals in dust around young stars may betray presence of massive planets jimp@specsol.spam.sux.com - 2015-10-29 22:55 +0000
    Re: Spirals in dust around young stars may betray presence of massive planets Sam Wormley <swormley1@gmail.com> - 2015-10-29 19:26 -0500
      Re: Spirals in dust around young stars may betray presence of massive planets Sam Wormley <swormley1@gmail.com> - 2015-10-30 08:20 -0500
        Re: Spirals in dust around young stars may betray presence of massive planets jimp@specsol.spam.sux.com - 2015-10-30 17:01 +0000

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