TY - JOUR
T1 - A high-resolution spectroscopic search for the remaining donor for Tycho'S supernova
AU - Kerzendorf, Wolfgang E.
AU - Yong, David
AU - Schmidt, Brian P.
AU - Simon, Joshua D.
AU - Jeffery, C. Simon
AU - Anderson, Jay
AU - Podsiadlowski, Philipp
AU - Gal-Yam, Avishay
AU - Silverman, Jeffrey M.
AU - Filippenko, Alexei V.
AU - Nomoto, Ken'Ichi
AU - Murphy, Simon J.
AU - Bessell, Michael S.
AU - Venn, Kim A.
AU - Foley, Ryan J.
PY - 2013/9/10
Y1 - 2013/9/10
N2 - 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.
AB - 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.
KW - ISM: supernova remnants
KW - supernovae: individual (SN1572)
UR - http://www.scopus.com/inward/record.url?scp=84883625505&partnerID=8YFLogxK
U2 - 10.1088/0004-637X/774/2/99
DO - 10.1088/0004-637X/774/2/99
M3 - Article
SN - 0004-637X
VL - 774
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 99
ER -