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Understanding Type Ia SuperNovae for Accurate Cosmology

Total Cost €


EC-Contrib. €






Project "USNAC" data sheet

The following table provides information about the project.


Organization address
address: RUE MICHEL ANGE 3
city: PARIS
postcode: 75794

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 1˙437˙188 €
 EC max contribution 1˙437˙188 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-03-01   to  2023-02-28


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

With this proposal I aim at removing astrophysical biases in SN cosmology that limit improvements in the derivation of properties of the dark energy (DE). DE is the cause of the recent acceleration of the expansion of the Universe and accounts for ~70% of its total energy. The initial discovery based on distance measurements from Type Ia Supernovae (SNeIa) has since been confirmed with several independent probes. Today, the goal of cosmology is to understand the nature of DE, and SNeIa remain a central probe for this endeavor. However, the nature of SNeIa remains largely unknown, which limits our ability to accurately trace the properties of the Universe. The proposed research program focuses on solving this problem.

The project takes place at the frontier between astronomy, cosmology and data-science, and consists of three main interconnected work-packages: 1. Understand the influence of the interstellar dust on the SN reddening, based on the unique combination of ground based spectrophotometry and high-resolution HST (space) UltraViolet-photometry; 2. Map SN progenitor variations across environments through next-generation large-scale transient surveys; 3. Combine the knowledge of the two former packages into a unique SN framework capable of adapting as the Universe evolves across time and distance. This will be used to derive accurate measurement of the Hubble constant and the dark energy equation of state parameters.

The project is made possible by a combination of state-of-the-art SN and galactic datasets from ZTF, SNfactory and an ongoing Hubble Space Telescope program of up to 136 orbits (PI: Rigault). The HST data will enable the first measurement of stellar-age and the interstellar dust at the SN location.


year authors and title journal last update
List of publications.
2019 Kim, Young-Lo; Kang, Yijung; Lee, Young-Wook
Environmental Dependence of Type Ia Supernova Luminosities from the YONSEI Supernova Catalog
published pages: 181-205, ISSN: 1225-4614, DOI:
Journal of The Korean Astronomical Society 52 2019-11-22
2019 Ulrich Feindt, Jakob Nordin, Mickael Rigault, Valéry Brinnel, Suhail Dhawan, Ariel Goobar, Marek Kowalski
simsurvey : estimating transient discovery rates for the Zwicky transient facility
published pages: 005-005, ISSN: 1475-7516, DOI: 10.1088/1475-7516/2019/10/005
Journal of Cosmology and Astroparticle Physics 2019/10 2019-11-08
2019 J. Nordin, V. Brinnel, J. van Santen, M. Bulla, U. Feindt, A. Franckowiak, C. Fremling, A. Gal-Yam, M. Giomi, M. Kowalski, A. Mahabal, N. Miranda, L. Rauch, M. Rigault, S. Schulze, J. Sollerman, R. Stein, O. Yaron, S. van Velzen, C. Ward
Transient processing and analysis using AMPEL: Alert management, photometry, and evaluation of lightcurves
published pages: , ISSN: 0004-6361, DOI: 10.1051/0004-6361/201935634
Astronomy & Astrophysics 2019-11-08
2019 S Taubenberger, A Floers, C Vogl, M Kromer, J Spyromilio, G Aldering, P Antilogus, S Bailey, C Baltay, S Bongard, K Boone, C Buton, N Chotard, Y Copin, S Dixon, D Fouchez, C Fransson, E Gangler, R R Gupta, S Hachinger, B Hayden, W Hillebrandt, A G Kim, M Kowalski, P-F Leget, B Leibundgut, P A Mazzali, U M Noebauer, J Nordin, R Pain, R Pakmor, E Pecontal, R Pereira, S Perlmutter, K A Ponder, D Rabi
SN 2012dn from early to late times: 09dc-like supernovae reassessed★
published pages: 5473-5488, ISSN: 0035-8711, DOI: 10.1093/mnras/stz1977
Monthly Notices of the Royal Astronomical Society 488 2019-09-17
2019 Matthew J. Graham, S. R. Kulkarni, Eric C. Bellm, Scott M. Adams, Cristina Barbarino, Nadejda Blagorodnova, Dennis Bodewits, Bryce Bolin, Patrick R. Brady, S. Bradley Cenko, Chan-Kao Chang, Michael W. Coughlin, Kishalay De, Gwendolyn Eadie, Tony L. Farnham, Ulrich Feindt, Anna Franckowiak, Christoffer Fremling, Suvi Gezari, Shaon Ghosh, Daniel A. Goldstein, V. Zach Golkhou, Ariel Goobar, Anna Y. Q
The Zwicky Transient Facility: Science Objectives
published pages: 78001, ISSN: 0004-6280, DOI: 10.1088/1538-3873/ab006c
Publications of the Astronomical Society of the Pacific 131/1001 2019-09-17
2019 Eric C. Bellm, Shrinivas R. Kulkarni, Matthew J. Graham, Richard Dekany, Roger M. Smith, Reed Riddle, Frank J. Masci, George Helou, Thomas A. Prince, Scott M. Adams, C. Barbarino, Tom Barlow, James Bauer, Ron Beck, Justin Belicki, Rahul Biswas, Nadejda Blagorodnova, Dennis Bodewits, Bryce Bolin, Valery Brinnel, Tim Brooke, Brian Bue, Mattia Bulla, Rick Burruss, S. Bradley Cenko, Chan-Kao Chang, An
The Zwicky Transient Facility: System Overview, Performance, and First Results
published pages: 18002, ISSN: 0004-6280, DOI: 10.1088/1538-3873/aaecbe
Publications of the Astronomical Society of the Pacific 131/995 2019-09-17
2018 Léget, P.-F.; Pruzhinskaya, M. V.; Bongard, S.; Boone, K.; Buton, C.; Childress, M.; Chotard, N.; Copin, Y.; Dixon, S.; Fagrelius, P.; Feindt, U.; Fouchez, D.; Ciulli, A.; Gris, P.; Hayden, B.; Hillebrandt, W.; Howell, D. A.; Kim, A.; Kowalski, M.; Kuesters, D.; Lombardo, S.; Lin, Q.; Nordin, J.; Gangler, E.; Pain, R.; Pecontal, E.; Pereira, R.; Perlmutter, S.; Rabinowitz, D.; Rigault, M.; Runge,
Correcting for peculiar velocities of Type Ia supernovae in clusters of galaxies
published pages: 12, ISSN: 0004-6361, DOI: 10.3204/PUBDB-2018-03196
Astronomy & Astrophysics 615 2019-09-17
2018 M. Rigault
Supernovae: Status and Perspective
published pages: , ISSN: , DOI:
POS 2019-09-17
2019 R Graziani, H M Courtois, G Lavaux, Y Hoffman, R B Tully, Y Copin, D Pomarède
The peculiar velocity field up to z ∼ 0.05 by forward-modelling Cosmicflows-3 data
published pages: 5438-5451, ISSN: 0035-8711, DOI: 10.1093/mnras/stz078
Monthly Notices of the Royal Astronomical Society 488/4 2019-09-17
2018 C. Saunders, G. Aldering, P. Antilogus, S. Bailey, C. Baltay, K. Barbary, D. Baugh, K. Boone, S. Bongard, C. Buton, J. Chen, N. Chotard, Y. Copin, S. Dixon, P. Fagrelius, H. K. Fakhouri, U. Feindt, D. Fouchez, E. Gangler, B. Hayden, W. Hillebrandt, A. G. Kim, M. Kowalski, D. Küsters, P.-F. Leget, S. Lombardo, J. Nordin, R. Pain, E. Pecontal, R. Pereira, S. Perlmutter, D. Rabinowitz, M. Rigault, D
SNEMO: Improved Empirical Models for Type Ia Supernovae
published pages: 167, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aaec7e
The Astrophysical Journal 869/2 2019-09-17
2019 M. Rigault, J. D. Neill, N. Blagorodnova, A. Dugas, M. Feeney, R. Walters, V. Brinnel, Y. Copin, C. Fremling, J. Nordin, J. Sollerman
Fully automated integral field spectrograph pipeline for the SEDMachine: pysedm
published pages: A115, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201935344
Astronomy & Astrophysics 627 2019-09-17
2019 Sjoert van Velzen, Suvi Gezari, S. Bradley Cenko, Erin Kara, James C. A. Miller-Jones, Tiara Hung, Joe Bright, Nathaniel Roth, Nadejda Blagorodnova, Daniela Huppenkothen, Lin Yan, Eran Ofek, Jesper Sollerman, Sara Frederick, Charlotte Ward, Matthew J. Graham, Rob Fender, Mansi M. Kasliwal, Chris Canella, Robert Stein, Matteo Giomi, Valery Brinnel, Jakob van Santen, Jakob Nordin, Eric C. Bellm, Ric
The First Tidal Disruption Flare in ZTF: From Photometric Selection to Multi-wavelength Characterization
published pages: 198, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aafe0c
The Astrophysical Journal 872/2 2019-09-17

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