Progenitor metallicity of Kepler's supernova

Sangwook Park, Carles Badenes, John Hughes, Patrick O. Slane, Koji Mori, Ryohei Kaida, David N. Burrows, Jae Joon Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


The detailed nature of Type Ia supernova progenitors has a profound impact on the thermonuclear supernova explosions and their utility in cosmology. Metallicity of the Type Ia progenitor is of particular interest because it is a key parameter to reveal the progenitor's age that may discriminate two populations of Type Ia supernovae (prompt vs delayed). Atomic X-ray line emission from trace elements Mn and Cr in young Type Ia supernova remnants provides an excellent opportunity to estimate the metallicity of the progenitor star. We have performed a deep Suzaku observation of Kepler's supernova remnant to reveal its progenitor's metallicity. Our preliminary results from this Suzaku Key Project indicate that Kepler's supernova was an explosion of a white dwarf with high metallicity (i.e., 4 times above the Solar), thus likely a young, prompt population of Type Ia supernova.

Original languageEnglish (US)
Title of host publicationSUZAKU 2011 - Exploring the X-Ray Universe
Subtitle of host publicationSuzaku and Beyond
Number of pages7
StatePublished - May 10 2012
EventSuzaku 2011: Exploring the X-Ray Universe: Suzaku and Beyond - Palo Alto, CA, United States
Duration: Jul 20 2011Jul 22 2011

Publication series

NameAIP Conference Proceedings


OtherSuzaku 2011: Exploring the X-Ray Universe: Suzaku and Beyond
CountryUnited States
CityPalo Alto, CA

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Ecology, Evolution, Behavior and Systematics
  • Nature and Landscape Conservation
  • Plant Science
  • Ecology


  • X-ray:ISM
  • supernova remnants
  • supernovae

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    Park, S., Badenes, C., Hughes, J., Slane, P. O., Mori, K., Kaida, R., Burrows, D. N., & Lee, J. J. (2012). Progenitor metallicity of Kepler's supernova. In SUZAKU 2011 - Exploring the X-Ray Universe: Suzaku and Beyond (pp. 87-93). (AIP Conference Proceedings; Vol. 1427).