@article{20eb2ff1b72043ccaee7f4c27ad509be,
title = "Calibrating the absolute magnitude of type Ia supernovae in nearby galaxies using [O ii] and implications for H0",
abstract = "The present state of cosmology is facing a crisis where there is a fundamental disagreement in measurements of the Hubble constant (), with significant tension between the early and late Universe methods. Type Ia supernovae (SNe Ia) are important to measuring through the astronomical distance ladder. However, there remains potential to better standardize SN Ia light curves by using known dependencies on host galaxy properties after the standard light curve width and colour corrections have been applied to the peak SN Ia luminosities. To explore this, we use the 5-yr photometrically identified SNe Ia sample obtained by the Dark Energy Survey, along with host galaxy spectra obtained by the Australian Dark Energy Survey. Using host galaxy spectroscopy, we find a significant trend with the equivalent width (EW) of the [O ii] 3727, 29 doublet, a proxy for specific star formation rate, and Hubble residuals. We find that the correlation with [O ii] EW is a powerful alternative to the commonly used mass step after initial light-curve corrections. Applying this [O ii] EW correction to 20 SNe Ia in calibrator galaxies observed with WiFeS, we examined the impact on SN Ia absolute magnitudes and. Our [O ii] EW corrections result in values ranging between 73.04 and 73.51, with a combined statistical and systematic uncertainty of. However, even with this additional correction, the impact of host galaxy properties in standardizing SNe Ia appears limited in reducing the current tension () with the cosmic microwave background result for.",
keywords = "cosmology: observations, galaxies: general, transients: supernovae",
author = "{DES Collaboration} and M. Dixon and J. Mould and C. Lidman and Taylor, {E. N.} and C. Flynn and Duffy, {A. R.} and L. Galbany and D. Scolnic and Davis, {T. M.} and A. M{\"o}ller and L. Kelsey and J. Lee and P. Wiseman and M. Vincenzi and P. Shah and M. Aguena and Allam, {S. S.} and O. Alves and D. Bacon and S. Bocquet and D. Brooks and Burke, {D. L.} and Rosell, {A. Carnero} and D. Carollo and J. Carretero and C. Conselice and {Da Costa}, {L. N.} and Pereira, {M. E.S.} and Diehl, {H. T.} and P. Doel and S. Everett and I. Ferrero and B. Flaugher and J. Frieman and J. Garc{\'i}a-Bellido and M. Gatti and E. Gaztanaga and G. Giannini and D. Gruen and Gruendl, {R. A.} and G. Gutierrez and K. Herner and Hinton, {S. R.} and Hollowood, {D. L.} and K. Honscheid and James, {D. J.} and K. Kuehn and M. Lima and Marshall, {J. L.} and F. Menanteau",
note = "Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Funda\u00E7\u00E3o Carlos Chagas Filho de Amparo \u00E0 Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cient\u00EDfico e Tecnol\u00F3gico and the Minist\u00E9rio da Ci\u00EAncia, Tecnologia e Inova\u00E7\u00E3o, the Deutsche Forschungsgemeinschaft and the Collaborating Institutions in the Dark Energy Survey. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MICINN under grants ESP2017-89838, PGC2018-094773, PGC2018-102021, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA programme of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union\u2019s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ci\u00EAncia e Tecnologia (INCT) do e-Universo (CNPq grant 465376/2014-2). This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The author Mitchell Dixon would like to acknowledge support through an Australian Government Research Training Program Scholarship. This research was supported by the Centre of Excellence for Dark Matter Particle Physics (CDM; project number CE200100008) and the Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav; project number CE170100004). This project/ publication was made possible through the support of a grant from the John Templeton Foundation. The authors gratefully acknowledge this grant ID 61807, Two Standard Models Meet. The opinions expressed in this publication are those of the author(s) and do not necessarily reflect the views of the John Templeton Foundation. LG acknowledges financial support from the Spanish Ministerio de Ciencia e Innovaci\u00F3n (MCIN) and the Agencia Estatal de Investigaci\u00F3n (AEI) 10.13039/501100011033 under the PID2020-115253GA-I00 HOSTFLOWS project, from Centro Superior de Investigaciones Cient\u00EDficas (CSIC) under the PIE project 20215AT016 and the program Unidad de Excelencia Mar\u00EDa de Maeztu CEX2020-001058-M, and from the Departament de Recerca i Universitats de la Generalitat de Catalunya through the 2021-SGR-01270 grant. LK thanks the UKRI Future Leaders Fellowship for support through the grant MR/T01881X/1. AM is supported by the ARC Discovery Early Career Researcher Award (DECRA) project number DE230100055.",
year = "2025",
month = apr,
day = "1",
doi = "10.1093/mnras/staf266",
language = "English (US)",
volume = "538",
pages = "782--796",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "2",
}