A high-resolution spectroscopic search for the remaining donor for Tycho'S supernova

Wolfgang E. Kerzendorf, David Yong, Brian P. Schmidt, Joshua D. Simon, C. Simon Jeffery, Jay Anderson, Philipp Podsiadlowski, Avishay Gal-Yam, Jeffrey M. Silverman, Alexei V. Filippenko, Ken'Ichi Nomoto, Simon J. Murphy, Michael S. Bessell, Kim A. Venn, Ryan J. Foley

Research output: Contribution to journalArticlepeer-review


In this paper, we report on our analysis using Hubble Space Telescope astrometry and Keck-I HIRES spectroscopy of the central six stars of Tycho's supernova remnant (SN 1572). With these data, we measured the proper motions, radial velocities, rotational velocities, and chemical abundances of these objects. Regarding the chemical abundances, we do not confirm the unusually high [Ni/Fe] ratio previously reported for Tycho-G. Rather, we find that for all metrics in all stars, none exhibit the characteristics expected from traditional Type Ia supernova single-degenerate-scenario calculations. The only possible exception is Tycho-B, a rare, metal-poor A-type star; however, we are unable to find a suitable scenario for it. Thus, we suggest that SN 1572 cannot be explained by the standard single-degenerate model.

Original languageEnglish (US)
Article number99
JournalAstrophysical Journal
Issue number2
StatePublished - Sep 10 2013
Externally publishedYes


  • ISM: supernova remnants
  • supernovae: individual (SN1572)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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