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Metallicity distributions of core-collapse supernovae within 30Mpc: Evidence for a lack of single massive Ib progenitors at low metallicities.

Published online by Cambridge University Press:  29 August 2024

Joanne L. Pledger Open the ORCID record for Joanne L. Pledger [Opens in a new window] ,
Rudi Ganss ,
Anne E. Sansom ,
Philip A. James ,
Joachim Puls  and
Stacey M. Habergham-Mawson
Joanne L. Pledger*
Affiliation:
Jeremiah Horrocks Institute, University of Central Lancashire, Preston, PR1 2HE, UK
Rudi Ganss
Affiliation:
Jeremiah Horrocks Institute, University of Central Lancashire, Preston, PR1 2HE, UK
Anne E. Sansom
Affiliation:
Jeremiah Horrocks Institute, University of Central Lancashire, Preston, PR1 2HE, UK
Philip A. James
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool L3 5RF, UK
Joachim Puls
Affiliation:
LMU München, Universitäts-Sternwarte, Scheinerstr, 1, D-81679 München, Germany
Stacey M. Habergham-Mawson
Affiliation:
Astrophysics Research Institute, Liverpool John Moores University, 146 Brownlow Hill, Liverpool L3 5RF, UK
*
email: [email protected]
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Abstract

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Local HII environment metallicities of 65 supernovae (SNe), obtained with INT/IDS, have been determined using the N2 and O3N2 strong emission line methods. Resulting cumulative distribution functions reveal a narrower distribution for Ib SNe (standard deviation σ ∼ 0.06 dex) compared to Ic and IIP distributions (σ ∼ 0.15 dex). This narrow distribution of Ib SNe is confirmed with an extended dataset using data from Galbany et al. (2018). Statistical tests confirm a statistically significant difference between the Ib and II-P metallicity distributions with < 5% probability that they result from the same progenitors. This narrow distribution suggests a lack of Type Ib SNe in low metallicity environments and points towards single star progenitors for these Type Ib SNe, rather than binaries. It also suggests that single massive stars at low metallicity are not commonly able to produce helium-rich Type Ib supernovae.

Keywords

supernovae: generalISM: HII regionsgalaxies: abundances.
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 590 - 595
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Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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