Popovic, B and Wiseman, P and Sullivan, M and Smith, M and González-Gaitán, S and Scolnic, D and Duarte, J and Armstrong, P and Asorey, J and Brout, D and Carollo, D and Galbany, L and Glazebrook, K and Kelsey, L and Kessler, R and Lidman, C and Lee, J and Lewis, G F and Möller, A and Nichol, R C and Sánchez, B O and Toy, M and Tucker, B E and Vincenzi, M and Abbott, T M C and Aguena, M and Andrade-Oliveira, F and Bacon, D and Brooks, D and Burke, D L and Carnero Rosell, A and Carretero, J and Castander, F J and da Costa, L N and Pereira, M E S and Davis, T M and Desai, S and Everett, S and Ferrero, I and Flaugher, B and García-Bellido, J and Gaztanaga, E and Gruendl, R A and Gutierrez, G and Hinton, S R and Hollowood, D L and Honscheid, K and James, D J and Kuehn, K and Lahav, O and Lee, S and Marshall, J L and Mena-Fernández, J and Miquel, R and Myles, J and Ogando, R L C and Palmese, A and Pieres, A and Plazas Malagón, A A and Sanchez, E and Sanchez Cid, D and Schubnell, M and Sevilla-Noarbe, I and Suchyta, E and Swanson, M E C and Tarle, G and Vikram, V and Weaverdyck, N (2024) Modelling the impact of host galaxy dust on type Ia supernova distance measurements. Monthly Notices of the Royal Astronomical Society, 534 (3). pp. 2263-2276. ISSN 0035-8711
Full text not available from this repository.Abstract
Type Ia Supernovae (SNe Ia) are a critical tool in measuring the accelerating expansion of the universe. Recent efforts to improve these standard candles have focused on incorporating the effects of dust on distance measurements with SNe Ia. In this paper, we use the state-of-the-art Dark Energy Survey 5 year sample to evaluate two different families of dust models: empirical extinction models derived from SNe Ia data and physical attenuation models from the spectra of galaxies. In this work, we use realistic simulations of SNe Ia to forward-model different models of dust and compare summary statistics in order to test different assumptions and impacts on SNe Ia data. Among the SNe Ia-derived models, we find that a logistic function of the total-to-selective extinction $R_V$ best recreates the correlations between supernova distance measurements and host galaxy properties, though an additional 0.02 mag of grey scatter is needed to fully explain the scatter in SNIa brightness in all cases. These empirically derived extinction distributions are highly incompatible with the physical attenuation models from galactic spectral measurements. From these results, we conclude that SNe Ia must either preferentially select extreme ends of galactic dust distributions, or that the characterization of dust along the SNe Ia line-of-sight is incompatible with that of galactic dust distributions.