Файл:SN1572.Companion.jpg

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).