Re: Massive stars are so close that they're touching

Newsgroups	sci.physics
Date	2015-10-23 08:45 -0700
References	(2 earlier) <eMKdnXrzKNQv57TLnZ2dnUU7-dsAAAAA@giganews.com> <8010a4d5-a76e-4bfc-aee1-6219d0ad8bdb@googlegroups.com> <9-OdnQzF879hp7fLnZ2dnUU7-I2dnZ2d@giganews.com> <5fdc40e2-3714-4b2e-a1c0-da46fba11f95@googlegroups.com> <-radnaUZmdRbzLfLnZ2dnUU7-fkAAAAA@giganews.com>
Message-ID	<9639b3ce-287c-41de-bad4-979036576429@googlegroups.com> (permalink)
Subject	Re: Massive stars are so close that they're touching
From	"Ross A. Finlayson" <ross.finlayson@gmail.com>

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On Friday, October 23, 2015 at 8:27:05 AM UTC-7, Sam Wormley wrote:
> On 10/23/15 10:24 AM, Ross A. Finlayson wrote:
> > On Friday, October 23, 2015 at 6:49:54 AM UTC-7, Sam Wormley wrote:
> >> On 10/23/15 1:00 AM, Ross A. Finlayson wrote:
> >>>
> >>> Sam, they can't be in the same frame and moving
> >>> past each other faster than c.  They each go the
> >>> same (also besides Sagnac/Ehrenfest each about
> >>> their centers), splitting the difference is 0.5c.
> >>>
> >>>
> >>
> >>
> >>     No! This is a binary star system--no relativistic speeds.
> >>> http://cdn.arstechnica.net/wp-content/uploads/2015/10/VFTS-binary-star-640x400.jpg
> >>
> >>
> >>
> >>     Massive stars are so close that they're touching> >
> >> http://arstechnica.com/science/2015/10/massive-stars-are-so-close-that-theyre-touching/
> >>
> >>   > New observations from the Very Large Array have turned up a system
> >>   > with two stars that are so close they're actually touching. Named
> >>   > VFTS 352, this isn't the first time we've observed a system of this
> >>   > type, known as an overcontact binary. But this is the most massive
> >>   > one discovered to date and the hottest one yet discovered, with both
> >>   > stars having temperatures over 40,000ºC.
> >>   >
> >>   > Overcontact binaries are extremely rare and thus are observed
> >>   > infrequently. That's because they exist for only a very short period
> >>   > in the lifespan of a system.
> >>   >
> >>   > VFTS 352's stars are continuing to orbit one another despite their
> >>   > close proximity of 12 million kilometers.  They complete an orbit of
> >>   > their common center of mass in just over a day. By contrast,
> >>   > Mercury's tight orbit of the Sun, though much faster than Earth's,
> >>   > still takes a full 88 days more or less. They're so close that
> >>   > they're actually sharing a bridge of gas that connects them (as
> >>   > illustrated in this animation).
> >>
> >>
> >
> > Those are pulsars otherwise that's to Casimir.
> >
> 
>    Nope -- These are Main Sequence stars fusing hydrogen into helium.
> 

Then why are they blue?

Thread

Massive stars are so close that they’re touching Sam Wormley <swormley1@gmail.com> - 2015-10-22 15:59 -0500
  Re: Massive stars are so close that they're touching "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-10-22 14:17 -0700
  Re: Massive stars are so close that they’re touching jimp@specsol.spam.sux.com - 2015-10-22 21:56 +0000
    Re: Massive stars are so close that they’re touching Sam Wormley <swormley1@gmail.com> - 2015-10-24 10:01 -0500
      Re: Massive stars are so close that they’re touching jimp@specsol.spam.sux.com - 2015-10-24 18:53 +0000
  Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-22 15:32 -0700
    Re: Massive stars are so close that they're touching Sam Wormley <swormley1@gmail.com> - 2015-10-22 19:09 -0500
      Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-22 23:00 -0700
        Re: Massive stars are so close that they're touching Sam Wormley <swormley1@gmail.com> - 2015-10-23 08:49 -0500
          Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 08:24 -0700
            Re: Massive stars are so close that they're touching Sam Wormley <swormley1@gmail.com> - 2015-10-23 10:27 -0500
              Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 08:45 -0700
                Re: Massive stars are so close that they're touching Sam Wormley <swormley1@gmail.com> - 2015-10-23 10:59 -0500
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 09:08 -0700
                Re: Massive stars are so close that they're touching Sam Wormley <swormley1@gmail.com> - 2015-10-23 11:15 -0500
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 09:19 -0700
                Re: Massive stars are so close that they're touching Sam Wormley <swormley1@gmail.com> - 2015-10-23 11:24 -0500
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 09:41 -0700
                Re: Massive stars are so close that they're touching pnalsing@gmail.com - 2015-10-23 10:16 -0700
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 10:23 -0700
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 10:24 -0700
                Re: Massive stars are so close that they're touching pnalsing@gmail.com - 2015-10-23 10:46 -0700
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 12:10 -0700
                Re: Massive stars are so close that they're touching pnalsing@gmail.com - 2015-10-23 14:41 -0700
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 14:55 -0700
                Re: Massive stars are so close that they're touching pnalsing@gmail.com - 2015-10-23 15:04 -0700
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 15:21 -0700
                Re: Massive stars are so close that they're touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-23 19:05 -0400
                Re: Massive stars are so close that they're touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-23 18:58 -0400
                Re: Massive stars are so close that they're touching "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2015-10-23 16:10 -0700
                Re: Massive stars are so close that they're touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-23 18:54 -0400
                Re: Massive stars are so close that they're touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-23 18:52 -0400
            Re: Massive stars are so close that they're touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-23 18:51 -0400
  Re: Massive stars are so close that they’re touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-22 19:53 -0400
    Re: Massive stars are so close that they're touching john <johnsefton288@gmail.com> - 2015-10-22 17:09 -0700
      Re: Massive stars are so close that they're touching Odd Bodkin <bodkinodd@gmail.com> - 2015-10-26 11:06 -0500
    Re: Massive stars are so close that they’re touching Sam Wormley <swormley1@gmail.com> - 2015-10-22 19:24 -0500
      Re: Massive stars are so close that they're touching "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-10-23 10:25 -0700
        Re: Massive stars are so close that they're touching HVAC <mr.hvac@gmail.com> - 2015-10-24 10:01 -0700
      Re: Massive stars are so close that they’re touching Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2015-10-23 18:49 -0400
  Re: Massive stars are so close that they’re touching gilber34 <fafa@invalid.com> - 2015-10-22 20:48 -0500
  Re: Massive stars are so close that they're touching Double-A <double-a3@hush.com> - 2015-10-26 15:40 -0700
    Re: Massive stars are so close that they're touching Poutnik <poutnik4nntp@gmail.com> - 2015-10-27 07:35 +0100

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