SN1572.Companion.jpg (800 × 450 кропак, аб’ём файла: 60 KB, тып MIME: image/jpeg)
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АпісаннеSN1572.Companion.jpg
English: These images show the location of a suspected runaway companion star to a titanic supernova explosion witnessed in the year 1572 by the great Danish astronomer Tycho Brahe and other astronomers of that era. This discovery provides the first direct evidence supporting the long-held belief that Type Ia supernovae come from binary star systems containing a normal star and a burned-out white dwarf star. When the dwarf ultimately explodes by being overfueled by the companion star, the companion is slung away from the demised star. The Hubble Space Telescope played a key role by precisely measuring the surviving star's motion against the sky background.
Right image
A Hubble Space Telescope Wide Field Planetary Camera-2 image of a small section of sky containing the candidate star. The star is like our Sun except several billion years older. It is moving through space at three times the speed of the other stars in its neighborhood. Hubble's sharp view allowed for a measurement of the star's motion, based on images taken in 1999 and 2003.
Left image
The Hubble view is superimposed on this wide-field view of the region enveloped by the expanding bubble of the supernova explosion; the bubble and candidate star are at approximately the same distance, 10,000 light-years. The star is noticeably offset from the geometric center of the bubble. The colors in the Chandra X-ray image of the hot bubble show different X-ray energies, with red, green, and blue representing low, medium, and high energies, respectively. (The image is cut off at the bottom because the southernmost region of the remnant fell outside the field of view of the Chandra camera.)
The results of this research, led by Pilar Ruiz-Lapuente of the University of Barcelona, are being published in the Oct. 28 British science journal Nature. The co-authors are Fernando Comeron (European Southern Observatory), Javier Mendez (University of Barcelona and Isaac Newton Group), Ramon Canal (University of Barcelona), Stephen Smartt (Institute of Astronomy, Cambridge), Alex Filippenko (University of California, Berkeley), Robert Kurucz (Harvard-Smithsonian Center for Astrophysics), Ryan Chornock and Ryan Foley (University of California, Berkeley), Vallery Stanishev (Stockholm University), and Rodrigo Ibata (Observatory of Strasbourg).
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This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag.
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{{Information |Description=Chandra's X-Ray image + Hubble Space Telescope optical image of G-class star companion of former binary system |Source=http://upload.wikimedia.org/wikipedia/ru/8/8c/SN1572.Companion.jpg |Date= |Author= |Permission= |other_versio
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