The Astrophysical Journal (Jan 2024)
The Dark Energy Survey Supernova Program: Cosmological Biases from Host Galaxy Mismatch of Type Ia Supernovae
- H. Qu,
- M. Sako,
- M. Vincenzi,
- C. Sánchez,
- D. Brout,
- R. Kessler,
- R. Chen,
- T. Davis,
- L. Galbany,
- L. Kelsey,
- J. Lee,
- C. Lidman,
- B. Popovic,
- B. Rose,
- D. Scolnic,
- M. Smith,
- M. Sullivan,
- P. Wiseman,
- T. M. C. Abbott,
- M. Aguena,
- O. Alves,
- D. Bacon,
- E. Bertin,
- D. Brooks,
- D. L. Burke,
- A. Carnero Rosell,
- J. Carretero,
- L. N. da Costa,
- M. E. S. Pereira,
- H. T. Diehl,
- P. Doel,
- S. Everett,
- I. Ferrero,
- J. Frieman,
- J. García-Bellido,
- G. Giannini,
- D. Gruen,
- R. A. Gruendl,
- G. Gutierrez,
- S. R. Hinton,
- D. L. Hollowood,
- K. Honscheid,
- D. J. James,
- K. Kuehn,
- O. Lahav,
- J. L. Marshall,
- J. Mena-Fernández,
- F. Menanteau,
- R. Miquel,
- R. L. C. Ogando,
- A. Palmese,
- A. Pieres,
- A. A. Plazas-Malagón,
- M. Raveri,
- E. Sanchez,
- I. Sevilla-Noarbe,
- M. Soares-Santos,
- E. Suchyta,
- G. Tarle,
- N. Weaverdyck,
- DES Collaboration
Affiliations
- H. Qu
- ORCiD
- Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104, USA ; [email protected]
- M. Sako
- ORCiD
- Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104, USA ; [email protected]
- M. Vincenzi
- Department of Physics, Duke University Durham , NC 27708, USA
- C. Sánchez
- ORCiD
- Departament de Física, Universitat Autònoma de Barcelona , 08193 Bellaterra, Barcelona, Spain; Institut de Física d’Altes Energies (IFAE) , The Barcelona Institute of Science and Technology, Campus UAB, 08193 Bellaterra, Barcelona, Spain
- D. Brout
- ORCiD
- Department of Astronomy, Boston University , 725 Commonwealth Avenue, Boston, MA 02215, USA
- R. Kessler
- ORCiD
- Department of Astronomy and Astrophysics, University of Chicago , Chicago, IL 60637, USA; Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USA
- R. Chen
- ORCiD
- Department of Physics, Duke University Durham , NC 27708, USA
- T. Davis
- ORCiD
- School of Mathematics and Physics, The University of Queensland , Brisbane QLD 4072 Australia
- L. Galbany
- ORCiD
- Institut d’Estudis Espacials de Catalunya (IEEC) , 08034 Barcelona, Spain; Institute of Space Sciences (ICE, CSIC) , Campus UAB, Carrer de Can Magrans, s/n, 08193 Barcelona, Spain
- L. Kelsey
- Institute of Cosmology and Gravitation, University of Portsmouth , Portsmouth, PO1 3FX, UK; School of Physics and Astronomy, University of Southampton , Southampton, SO17 1BJ, UK
- J. Lee
- ORCiD
- Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104, USA ; [email protected]
- C. Lidman
- ORCiD
- Centre for Gravitational Astrophysics, College of Science, The Australian National University , ACT 2601, Australia; The Research School of Astronomy and Astrophysics, Australian National University , ACT 2601, Australia
- B. Popovic
- ORCiD
- Department of Physics, Duke University Durham , NC 27708, USA
- B. Rose
- ORCiD
- Department of Physics, Duke University Durham , NC 27708, USA
- D. Scolnic
- ORCiD
- Department of Physics, Duke University Durham , NC 27708, USA
- M. Smith
- ORCiD
- Univ Lyon , Univ Claude Bernard Lyon 1, CNRS, IP2I Lyon / IN2P3, IMR 5822, F-69622 Villeurbanne, France
- M. Sullivan
- ORCiD
- School of Physics and Astronomy, University of Southampton , Southampton, SO17 1BJ, UK
- P. Wiseman
- School of Physics and Astronomy, University of Southampton , Southampton, SO17 1BJ, UK
- T. M. C. Abbott
- ORCiD
- Cerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory , Casilla 603, La Serena, Chile
- M. Aguena
- ORCiD
- Laboratório Interinstitucional de e-Astronomia—LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, Brazil
- O. Alves
- ORCiD
- Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA
- D. Bacon
- ORCiD
- Institute of Cosmology and Gravitation, University of Portsmouth , Portsmouth, PO1 3FX, UK
- E. Bertin
- ORCiD
- CNRS, UMR 7095, Institut d’Astrophysique de Paris , F-75014, Paris, France; Sorbonne Universités , UPMC Univ Paris 06, UMR 7095, Institut d’Astrophysique de Paris, F-75014, Paris, France
- D. Brooks
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- D. L. Burke
- ORCiD
- Kavli Institute for Particle Astrophysics & Cosmology, P.O. Box 2450, Stanford University , Stanford, CA 94305, USA; SLAC National Accelerator Laboratory , Menlo Park, CA 94025, USA
- A. Carnero Rosell
- ORCiD
- Laboratório Interinstitucional de e-Astronomia—LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, Brazil; Instituto de Astrofisica de Canarias , E-38205 La Laguna, Tenerife, Spain; Universidad de La Laguna , Dpto. Astrofísica, E-38206 La Laguna, Tenerife, Spain
- J. Carretero
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, 08193 Bellaterra (Barcelona) Spain
- L. N. da Costa
- ORCiD
- Laboratório Interinstitucional de e-Astronomia—LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, Brazil
- M. E. S. Pereira
- ORCiD
- Hamburger Sternwarte, Universität Hamburg , Gojenbergsweg 112, 21029 Hamburg, Germany
- H. T. Diehl
- ORCiD
- Fermi National Accelerator Laboratory , P.O. Box 500, Batavia, IL 60510, USA
- P. Doel
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- S. Everett
- ORCiD
- Jet Propulsion Laboratory , California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA
- I. Ferrero
- ORCiD
- Institute of Theoretical Astrophysics, University of Oslo , P.O. Box 1029 Blindern, NO-0315 Oslo, Norway
- J. Frieman
- ORCiD
- Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USA; Fermi National Accelerator Laboratory , P.O. Box 500, Batavia, IL 60510, USA
- J. García-Bellido
- ORCiD
- Instituto de Fisica Teorica UAM/CSIC, Universidad Autonoma de Madrid , 28049 Madrid, Spain
- G. Giannini
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, 08193 Bellaterra (Barcelona) Spain
- D. Gruen
- ORCiD
- University Observatory , Faculty of Physics, Ludwig-Maximilians-Universität, Scheinerstr. 1, 81679 Munich, Germany
- R. A. Gruendl
- ORCiD
- Center for Astrophysical Surveys, National Center for Supercomputing Applications , 1205 West Clark Street, Urbana, IL 61801, USA; Department of Astronomy, University of Illinois at Urbana-Champaign , 1002 W. Green Street, Urbana, IL 61801, USA
- G. Gutierrez
- ORCiD
- Fermi National Accelerator Laboratory , P.O. Box 500, Batavia, IL 60510, USA
- S. R. Hinton
- ORCiD
- School of Mathematics and Physics, University of Queensland , Brisbane, QLD 4072, Australia
- D. L. Hollowood
- ORCiD
- Santa Cruz Institute for Particle Physics , Santa Cruz, CA 95064, USA
- K. Honscheid
- ORCiD
- Center for Cosmology and Astro-Particle Physics, The Ohio State University , Columbus, OH 43210, USA; Department of Physics, The Ohio State University , Columbus, OH 43210, USA
- D. J. James
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- K. Kuehn
- ORCiD
- Australian Astronomical Optics, Macquarie University , North Ryde, NSW 2113, Australia; Lowell Observatory , 1400 Mars Hill Rd, Flagstaff, AZ 86001, USA
- O. Lahav
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- J. L. Marshall
- ORCiD
- George P. and Cynthia Woods Mitchell Institute for Fundamental Physics and Astronomy, and Department of Physics and Astronomy, Texas A&M University , College Station, TX 77843, USA
- J. Mena-Fernández
- ORCiD
- Centro de Investigaciones Energéticas , Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- F. Menanteau
- ORCiD
- Center for Astrophysical Surveys, National Center for Supercomputing Applications , 1205 West Clark Street, Urbana, IL 61801, USA; Department of Astronomy, University of Illinois at Urbana-Champaign , 1002 W. Green Street, Urbana, IL 61801, USA
- R. Miquel
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, 08193 Bellaterra (Barcelona) Spain; Institució Catalana de Recerca i Estudis Avançats , E-08010 Barcelona, Spain
- R. L. C. Ogando
- ORCiD
- Observatório Nacional , Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, Brazil
- A. Palmese
- ORCiD
- Department of Physics, Carnegie Mellon University , Pittsburgh, PA 15312, USA
- A. Pieres
- ORCiD
- Laboratório Interinstitucional de e-Astronomia—LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, Brazil; Observatório Nacional , Rua Gal. José Cristino 77, Rio de Janeiro, RJ—20921-400, Brazil
- A. A. Plazas-Malagón
- ORCiD
- Department of Astrophysical Sciences, Princeton University , Peyton Hall, Princeton, NJ 08544, USA
- M. Raveri
- Department of Physics, University of Genova and INFN , Via Dodecaneso 33, 16146, Genova, Italy
- E. Sanchez
- ORCiD
- Centro de Investigaciones Energéticas , Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- I. Sevilla-Noarbe
- ORCiD
- Centro de Investigaciones Energéticas , Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- M. Soares-Santos
- ORCiD
- Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA
- E. Suchyta
- ORCiD
- Computer Science and Mathematics Division, Oak Ridge National Laboratory , Oak Ridge, TN 37831, USA
- G. Tarle
- ORCiD
- Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA
- N. Weaverdyck
- ORCiD
- Department of Physics, University of Michigan , Ann Arbor, MI 48109, USA; Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- DES Collaboration
- DOI
- https://doi.org/10.3847/1538-4357/ad251d
- Journal volume & issue
-
Vol. 964,
no. 2
p. 134
Abstract
Redshift measurements, primarily obtained from host galaxies, are essential for inferring cosmological parameters from type Ia supernovae (SNe Ia). Matching SNe to host galaxies using images is nontrivial, resulting in a subset of SNe with mismatched hosts and thus incorrect redshifts. We evaluate the host galaxy mismatch rate and resulting biases on cosmological parameters from simulations modeled after the Dark Energy Survey 5 Yr (DES-SN5YR) photometric sample. For both DES-SN5YR data and simulations, we employ the directional light radius method for host galaxy matching. In our SN Ia simulations, we find that 1.7% of SNe are matched to the wrong host galaxy, with redshift differences between the true and matched hosts of up to 0.6. Using our analysis pipeline, we determine the shift in the dark energy equation of state parameter (Δ w ) due to including SNe with incorrect host galaxy matches. For SN Ia–only simulations, we find Δ w = 0.0013 ± 0.0026 with constraints from the cosmic microwave background. Including core-collapse SNe and peculiar SNe Ia in the simulation, we find that Δ w ranges from 0.0009 to 0.0032, depending on the photometric classifier used. This bias is an order of magnitude smaller than the expected total uncertainty on w from the DES-SN5YR sample of ∼0.03. We conclude that the bias on w from host galaxy mismatch is much smaller than the uncertainties expected from the DES-SN5YR sample, but we encourage further studies to reduce this bias through better host-matching algorithms or selection cuts.
Keywords
