The binary progenitor of Tycho Brahe's 1572 supernova

P. Ruiz-Lapuente, F. Comeron, J. Mendez, R. Canal, Stephen Smartt, A.V. Filippenko, R.L. Kurucz, R. Chornock, R.J. Foley, V. Stanishev, R. Ibata

Research output: Contribution to journalArticlepeer-review

188 Citations (Scopus)


The brightness of type Ia supernovae, and their homogeneity as a class, makes them powerful tools in cosmology, yet little is known about the progenitor systems of these explosions. They are thought to arise when a white dwarf accretes matter from a companion star, is compressed and undergoes a thermonuclear explosion(1-3). Unless the companion star is another white dwarf ( in which case it should be destroyed by the mass-transfer process itself), it should survive and show distinguishing properties. Tycho's supernova(4,5) is one of only two type Ia supernovae observed in our Galaxy, and so provides an opportunity to address observationally the identification of the surviving companion. Here we report a survey of the central region of its remnant, around the position of the explosion, which excludes red giants as the mass donor of the exploding white dwarf. We found a type G0 - G2 star, similar to our Sun in surface temperature and luminosity ( but lower surface gravity), moving at more than three times the mean velocity of the stars at that distance, which appears to be the surviving companion of the supernova.
Original languageEnglish
Pages (from-to)1069-1072
Number of pages4
Issue number7012
Publication statusPublished - 28 Oct 2004

ASJC Scopus subject areas

  • General


Dive into the research topics of 'The binary progenitor of Tycho Brahe's 1572 supernova'. Together they form a unique fingerprint.

Cite this