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

    64 Citations (Scopus)

    Abstract

    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
    Article number99
    JournalAstrophysical Journal
    Volume774
    Issue number2
    DOIs
    Publication statusPublished - 10 Sept 2013

    Fingerprint

    Dive into the research topics of 'A high-resolution spectroscopic search for the remaining donor for Tycho'S supernova'. Together they form a unique fingerprint.

    Cite this