Grayling, M;
Gutierrez, CP;
Sullivan, M;
Wiseman, P;
Vincenzi, M;
Galbany, L;
Moller, A;
... Varga, TN; + view all
(2023)
Core-collapse supernovae in the Dark Energy Survey: luminosity functions and host galaxy demographics.
Monthly Notices of the Royal Astronomical Society
, 520
(1)
pp. 684-701.
10.1093/mnras/stad056.
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Abstract
We present the luminosity functions and host galaxy properties of the Dark Energy Survey (DES) core-collapse supernova (CCSN) sample, consisting of 69 Type II and 50 Type Ibc spectroscopically and photometrically confirmed supernovae over a redshift range 0.045 < z < 0.25. We fit the observed DES griz CCSN light curves and K-correct to produce rest-frame R-band light curves. We compare the sample with lower redshift CCSN samples from Zwicky Transient Facility (ZTF) and Lick Observatory Supernova Search (LOSS). Comparing luminosity functions, the DES and ZTF samples of SNe II are brighter than that of LOSS with significances of 3.0σ and 2.5σ, respectively. While this difference could be caused by redshift evolution in the luminosity function, simpler explanations such as differing levels of host extinction remain a possibility. We find that the host galaxies of SNe II in DES are on average bluer than in ZTF, despite having consistent stellar mass distributions. We consider a number of possibilities to explain this – including galaxy evolution with redshift, selection biases in either the DES or ZTF samples, and systematic differences due to the different photometric bands available – but find that none can easily reconcile the differences in host colour between the two samples and thus its cause remains uncertain.
| Type: | Article |
|---|---|
| Title: | Core-collapse supernovae in the Dark Energy Survey: luminosity functions and host galaxy demographics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stad056 |
| Publisher version: | https://doi.org/10.1093/mnras/stad056 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Surveys, supernovae: general |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10167086 |
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