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The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample

Journal Article · · The Astrophysical Journal (Online)
 [1];  [2];  [3];  [4];  [5];  [4];  [6];  [1];  [7];  [8];  [9];  [10];  [11];  [10];  [12];  [13];  [14];  [10];  [15];  [16] more »;  [17];  [18];  [6];  [19];  [20];  [19];  [21];  [22];  [6];  [23];  [6];  [6];  [6];  [6];  [23];  [6];  [17];  [17];  [17];  [17] « less
  1. The Univ. of Chicago, Chicago, IL (United States)
  2. Johns Hopkins Univ., Baltimore, MD (United States)
  3. Johns Hopkins Univ., Baltimore, MD (United States); Space Telescope Science Institute, Baltimore, MD (United States)
  4. Univ. of California, Santa Cruz, CA (United States)
  5. Ohio Univ., Athens, OH (United States)
  6. Univ. of Hawaii, Honolulu, HI (United States)
  7. Space Telescope Science Institute, Baltimore, MD (United States)
  8. Space Telescope Science Institute, Baltimore, MD (United States); Johns Hopkins Univ., Baltimore, MD (United States)
  9. Univ. of South Carolina, Columbia, SC (United States)
  10. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  11. Univ. of Pennsylvania, Philadelphia, PA (United States)
  12. The Observatories of the Carnegie Institution for Science, Pasadena, CA (United States)
  13. Harvard Univ., Cambridge, MA (United States)
  14. Stockholm Univ., Stockholm (Sweden)
  15. Private Researcher
  16. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  17. Queens Univ. Belfast, Belfast (United Kingdom)
  18. Harvard Univ., Cambridge, MA (United States); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  19. Univ. of Pittsburgh, Pittsburgh, PA (United States)
  20. Univ. of Notre Dame, Notre Dame, IN (United States)
  21. Villanova Univ., Villanova, PA (United States)
  22. GMTO Corp., Pasadena, CA (United States)
  23. Univ. of Durham Science Labs., Durham (United Kingdom)
+ Show Author Affiliations
Here, we present optical light curves, redshifts, and classifications for 365 spectroscopically confirmed Type Ia supernovae (SNe Ia) discovered by the Pan-STARRS1 (PS1) Medium Deep Survey. We detail improvements to the PS1 SN photometry, astrometry, and calibration that reduce the systematic uncertainties in the PS1 SN Ia distances. We combine the subset of 279 PS1 SNe Ia (0.03 < z < 0.68) with useful distance estimates of SNe Ia from the Sloan Digital Sky Survey (SDSS), SNLS, and various low-z and Hubble Space Telescope samples to form the largest combined sample of SNe Ia, consisting of a total of 1048 SNe Ia in the range of 0.01 < z < 2.3, which we call the Pantheon Sample. When combining Planck 2015 cosmic microwave background (CMB) measurements with the Pantheon SN sample, we find Ωm = 0.307 ± 0.012 and w = -1.026 ± 0.041 for the wCDM model. When the SN and CMB constraints are combined with constraints from BAO and local H0 measurements, the analysis yields the most precise measurement of dark energy to date: w0 = -1.007 ± 0.089 and wα = -0.222 ± 0.407 for the w0wα CDM model. Tension with a cosmological constant previously seen in an analysis of PS1 and low-z SNe has diminished after an increase of 2× in the statistics of the PS1 sample, improved calibration and photometry, and stricter light-curve quality cuts. We find that the systematic uncertainties in our measurements of dark energy are almost as large as the statistical uncertainties, primarily due to limitations of modeling the low-redshift sample. This must be addressed for future progress in using SNe Ia to measure dark energy.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1461165
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 859; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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A Model-independent Determination of the Hubble Constant from Lensed Quasars and Supernovae Using Gaussian Process Regression journal November 2019
Brans–Dicke Gravity with a Cosmological Constant Smoothes Out ΛCDM Tensions journal November 2019
Constraints on barotropic dark energy models by a new phenomenological $q(z)$ parameterization text January 2018
A Model-independent Test of Cosmic Isotropy with Low-z Pantheon Supernovae text January 2018
Updated Bounds on Sum of Neutrino Masses in Various Cosmological Scenarios text January 2018
Dark Energy in the Swampland II preprint January 2018
Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program text January 2018
Carnegie Supernova Project-II: Extending the Near-Infrared Hubble Diagram for Type Ia Supernovae to $z\sim0.1$ text January 2018
First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline and Light Curve Data Release text January 2018
Cluster Cosmology Constraints from the 2500 deg$^2$ SPT-SZ Survey: Inclusion of Weak Gravitational Lensing Data from Magellan and the Hubble Space Telescope text January 2018
Null test for interactions in the dark sector text January 2018
ZTF 18aaqeasu (SN 2018byg): A Massive Helium-shell Double Detonation on a Sub-Chandrasekhar Mass White Dwarf text January 2019
The Local Perspective on the Hubble Tension: Local Structure Does Not Impact Measurement of the Hubble Constant text January 2019
Unbiased Cosmic Opacity Constraints from Standard Sirens and Candles text January 2019
Type Ia Supernovae are Excellent Standard Candles in the Near-Infrared text January 2019
The local and distant Universe: stellar ages and $H_0$ text January 2019
Modified cosmology from extended entropy with varying exponent text January 2019
The Hyper Suprime-Cam SSP Transient Survey in COSMOS: Overview text January 2019
A Dark Energy Quintessence Model of the Universe text January 2019
Revisiting a negative cosmological constant from low-redshift data text January 2019
Quasar X-ray and UV flux, baryon acoustic oscillation, and Hubble parameter measurement constraints on cosmological model parameters text January 2019
Direct Detection of Dark Matter Substructure in Strong Lens Images with Convolutional Neural Networks text January 2019
Constraining the anisotropy of the Universe via Pantheon supernovae sample text January 2019
Planck evidence for a closed Universe and a possible crisis for cosmology text January 2019
An Information Theory Approach on Deciding Spectroscopic Follow Ups text January 2019

Figures / Tables (41)

Figure 1(p. 3)figure Figure 1
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Table 1(p. 5)table Table 1
Figure 3(p. 6)figure Figure 3
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Figure 5(p. 8)figure Figure 5
Table 2(p. 8)table Table 2
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Table-4(p. 12)table Table-4
Figure 11(p. 13)figure Figure 11
Table 5(p. 14)table Table 5
Table 6(p. 14)table Table 6
Figure 12(p. 15)figure Figure 12
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Figure 14(p. 16)figure Figure 14
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Table 7(p. 18)table Table 7
Table 8(p. 18)table Table 8
Figure 18(p. 19)figure Figure 18
Table 10(p. 19)table Table 10
Table 9(p. 19)table Table 9
Figure 19(p. 20)figure Figure 19
Table 11(p. 20)table Table 11
Figure 20(p. 21)figure Figure 20
Table 12(p. 21)table Table 12
Figure 21(p. 22)figure Figure 21
Table 13(p. 22)table Table 13
Table 14(p. 23)table Table 14
Table 15(p. 24)table Table 15
Table 16(p. 25)table Table 16
Table 17(p. 25)table Table 17
Figure 22(p. 26)figure Figure 22
Figure 23(p. 27)figure Figure 23
Table 18(p. 28)table Table 18

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmology: observations
dark energy
supernovae: general