The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope

Jones, D. O.; Scolnic, D. M.; Foley, R. J.; Rest, A.; Kessler, R.; Challis, P. M.; Chambers, K. C.; Coulter, D. A.; Dettman, K. G.; Foley, M. M.; Huber, M. E.; Jha, S. W.; Johnson, E.; Kilpatrick, C. D.; Kirshner, R. P.; Manuel, J.; Narayan, G.; Pan, Y. -C.; Riess, A. G.; Schultz, A. S.  B.; Siebert, M. R.; Berger, E.; Chornock, R.; Flewelling, H.; Magnier, E. A.; Smartt, S. J.; Smith, K. W.; Wainscoat, R. J.; Waters, C.; Willman, M.

doi:10.3847/1538-4357/ab2bec

Title: The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope

Abstract

Measurements of the dark energy equation-of-state parameter, w, have been limited by uncertaintyin the selection effects and photometric calibration of $z <0.1$ Type Ia supernovae (SNe Ia). The Foundation Supernova Survey is designed to lower these uncertainties by creating a new sample of $z < 0.1$ SNe Ia observed on the Pan-STARRS system. Here, we combine the Foundation sample with SNe from the Pan-STRRS Medium Deep Survey and measure cosmological parameters with 1,338 SNe from a single telescope and a single, well-calibrated photometric system. For the firsttime, both the low-z and high-z data are predominantly discovered by surveys that do not target pre-selected galaxies, reducing selection bias uncertainties. The $z > 0.1$ data include 875 SNe without spectroscopic classifications and we show that we can robustly marginalize over CC SN contamination. We measure Foundation Hubble residuals to be fainter than the pre-existing low-z Hubble residualsby 0.046±0.027 mag (stat+sys). By combining the SN Ia data with cosmic microwave backgroundconstraints, we find w = -0.938±0.053, consistent with $Λ$CDM. With 463 spectroscopically classified SNe Ia alone, we measure w = -0.933±0.061. Using the more homogeneous and better-characterized Foundation sample gives a 55% reduction in the systematic uncertainty attributed to SN Ia sampleselection biases.more »« less

Authors:

^[1]; Scolnic, D. M. ^[2]; Foley, R. J. ^[1]; Rest, A. ^[3];

^[2]; Challis, P. M. ^[4];

^[5];

^[1]; Dettman, K. G. ^[6]; Foley, M. M. ^[4];

^[5];

^[6]; Johnson, E. ^[7];

^[1]; Kirshner, R. P. ^[8]; Manuel, J. ^[9];

^[10]; Pan, Y. -C. ^[11]; Riess, A. G. ^[3]; Schultz, A. S. B. ^[5] more »

Univ. of California, Santa Cruz, CA (United States)
Univ. of Chicago, IL (United States)
Space Telescope Science Inst., Baltimore, MD (United States); Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Physics and Astronomy
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
Univ. of Hawaii, Honolulu, HI (United States)
Rutgers Univ., Piscataway, NJ (United States)
Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Physics and Astronomy
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States); Gordon and Betty Moore Foundation, Palo Alto, CA (United States)
Villanova Univ., Villanova, PA (United States)
Space Telescope Science Inst., Baltimore, MD (United States)
Division of Theoretical Astronomy, National Astronomical Observatory of Japan (Japan); Academia Sinica, Taipei (Taiwan)
Ohio Univ., Athens, OH (United States)
Queen's Univ., Belfast, Northern Ireland (United Kingdom)

Publication Date:: 2019-08-07

Research Org.:: Univ. of Chicago, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1593851

Grant/Contract Number:: SC0009924

Resource Type:: Accepted Manuscript

Journal Name:: The Astrophysical Journal (Online)

Additional Journal Information:: Journal Name: The Astrophysical Journal (Online); Journal Volume: 881; Journal Issue: 1; Journal ID: ISSN 1538-4357

Publisher:: Institute of Physics (IOP)

Country of Publication:: United States

Language:: English

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

Citation Formats


                    Jones, D. O., Scolnic, D. M., Foley, R. J., Rest, A., Kessler, R., Challis, P. M., Chambers, K. C., Coulter, D. A., Dettman, K. G., Foley, M. M., Huber, M. E., Jha, S. W., Johnson, E., Kilpatrick, C. D., Kirshner, R. P., Manuel, J., Narayan, G., Pan, Y. -C., Riess, A. G., Schultz, A. S.  B., Siebert, M. R., Berger, E., Chornock, R., Flewelling, H., Magnier, E. A., Smartt, S. J., Smith, K. W., Wainscoat, R. J., Waters, C., and Willman, M. The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope.  United States: N. p., 2019. 
        Web.  doi:10.3847/1538-4357/ab2bec.

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                    Jones, D. O., Scolnic, D. M., Foley, R. J., Rest, A., Kessler, R., Challis, P. M., Chambers, K. C., Coulter, D. A., Dettman, K. G., Foley, M. M., Huber, M. E., Jha, S. W., Johnson, E., Kilpatrick, C. D., Kirshner, R. P., Manuel, J., Narayan, G., Pan, Y. -C., Riess, A. G., Schultz, A. S.  B., Siebert, M. R., Berger, E., Chornock, R., Flewelling, H., Magnier, E. A., Smartt, S. J., Smith, K. W., Wainscoat, R. J., Waters, C., & Willman, M. The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope.  United States.  doi:https://doi.org/10.3847/1538-4357/ab2bec

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                    Jones, D. O., Scolnic, D. M., Foley, R. J., Rest, A., Kessler, R., Challis, P. M., Chambers, K. C., Coulter, D. A., Dettman, K. G., Foley, M. M., Huber, M. E., Jha, S. W., Johnson, E., Kilpatrick, C. D., Kirshner, R. P., Manuel, J., Narayan, G., Pan, Y. -C., Riess, A. G., Schultz, A. S.  B., Siebert, M. R., Berger, E., Chornock, R., Flewelling, H., Magnier, E. A., Smartt, S. J., Smith, K. W., Wainscoat, R. J., Waters, C., and Willman, M. Wed .  
        "The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope".  United States.  doi:https://doi.org/10.3847/1538-4357/ab2bec.  https://www.osti.gov/servlets/purl/1593851.

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@article{osti_1593851,

  title        = {The Foundation Supernova Survey: Measuring Cosmological Parameters with Supernovae from a Single Telescope},

  author       = {Jones, D. O. and Scolnic, D. M. and Foley, R. J. and Rest, A. and Kessler, R. and Challis, P. M. and Chambers, K. C. and Coulter, D. A. and Dettman, K. G. and Foley, M. M. and Huber, M. E. and Jha, S. W. and Johnson, E. and Kilpatrick, C. D. and Kirshner, R. P. and Manuel, J. and Narayan, G. and Pan, Y. -C. and Riess, A. G. and Schultz, A. S.  B. and Siebert, M. R. and Berger, E. and Chornock, R. and Flewelling, H. and Magnier, E. A. and Smartt, S. J. and Smith, K. W. and Wainscoat, R. J. and Waters, C. and Willman, M.},

  abstractNote = {Measurements of the dark energy equation-of-state parameter, w, have been limited by uncertaintyin the selection effects and photometric calibration of $z <0.1$ Type Ia supernovae (SNe Ia). The Foundation Supernova Survey is designed to lower these uncertainties by creating a new sample of $z < 0.1$ SNe Ia observed on the Pan-STARRS system. Here, we combine the Foundation sample with SNe from the Pan-STRRS Medium Deep Survey and measure cosmological parameters with 1,338 SNe from a single telescope and a single, well-calibrated photometric system. For the firsttime, both the low-z and high-z data are predominantly discovered by surveys that do not target pre-selected galaxies, reducing selection bias uncertainties. The $z > 0.1$ data include 875 SNe without spectroscopic classifications and we show that we can robustly marginalize over CC SN contamination. We measure Foundation Hubble residuals to be fainter than the pre-existing low-z Hubble residualsby 0.046±0.027 mag (stat+sys). By combining the SN Ia data with cosmic microwave backgroundconstraints, we find w = -0.938±0.053, consistent with $Λ$CDM. With 463 spectroscopically classified SNe Ia alone, we measure w = -0.933±0.061. Using the more homogeneous and better-characterized Foundation sample gives a 55% reduction in the systematic uncertainty attributed to SN Ia sampleselection biases. Although use of just a single photometric system at low and high redshift increases the impact of photometric calibration uncertainties in this analysis, previous low-z samples may have correlated calibration uncertainties that were neglected in past studies. The full Foundation sample will observe up to 800 SNe to anchor the LSST and WFIRST Hubble diagrams.},

  doi          = {10.3847/1538-4357/ab2bec},

  journal      = {The Astrophysical Journal (Online)},

  number       = 1,

  volume       = 881,

  place        = {United States},

  year         = {2019},

  month        = {8}

}

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Abstract

Citation Formats

THE CARNEGIE SUPERNOVA PROJECT: FIRST PHOTOMETRY DATA RELEASE OF LOW-REDSHIFT TYPE Ia SUPERNOVAE journal, January 2010

Should Type Ia Supernova Distances Be Corrected for Their Local Environments? journal, November 2018

DOPHOT, a CCD photometry program: Description and tests journal, July 1993

Environmental Dependence of Type Ia Supernova Luminosities from a Sample without a Local–Global Difference in Host Star Formation journal, February 2018

First cosmology results using Type Ia supernova from the Dark Energy Survey: simulations to correct supernova distance biases journal, February 2019

The cosmic transparency measured with Type Ia supernovae: implications for intergalactic dust journal, April 2018

Extending BEAMS to incorporate correlated systematic uncertainties journal, January 2013

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Constraining dark matter halo properties using lensed Supernova Legacy Survey supernovae journal, March 2010

The ASAS-SN bright supernova catalogue – III. 2016 journal, August 2017

Measuring the galaxy-mass and galaxy-dust correlations through magnification and reddening: Magnification and dust reddening journal, May 2010

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample journal, March 2017

THE FUNDAMENTAL METALLICITY RELATION REDUCES TYPE Ia SN HUBBLE RESIDUALS MORE THAN HOST MASS ALONE journal, February 2013

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CONFIRMATION OF A STAR FORMATION BIAS IN TYPE Ia SUPERNOVA DISTANCES AND ITS EFFECT ON THE MEASUREMENT OF THE HUBBLE CONSTANT journal, March 2015

Nearby supernova rates from the Lick Observatory Supernova Search - II. The observed luminosity functions and fractions of supernovae in a complete sample: Nearby supernova rates from LOSS - II journal, March 2011

Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant journal, September 1998

Photometric Supernova Cosmology with Beams and Sdss-Ii journal, May 2012

Rates and Properties of Type Ia Supernovae as a Function of Mass and Star Formation in Their Host Galaxies journal, September 2006

The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am journal, January 2018

Sampling the probability distribution of Type Ia Supernova lightcurve parameters in cosmological analysis journal, April 2016

The Supernova Legacy Survey: measurement of $\Omega_{\mathsf{M}}$, $\Omega_\mathsf{\Lambda}$ and w from the first year data set journal, January 2006

The clustering of the SDSS DR7 main Galaxy sample – I. A 4 per cent distance measure at z = 0.15 journal, March 2015

PHOTOMETRIC TYPE Ia SUPERNOVA CANDIDATES FROM THE THREE-YEAR SDSS-II SN SURVEY DATA journal, August 2011

Cosmological parameters from CMB and other data: A Monte Carlo approach journal, November 2002

New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope : Implications for the Hubble Constant journal, March 2018

COLOR DISPERSION AND MILKY-WAY-LIKE REDDENING AMONG TYPE Ia SUPERNOVAE journal, December 2013

Type Ia Supernova Discoveries at z > 1 from the Hubble Space Telescope : Evidence for Past Deceleration and Constraints on Dark Energy Evolution journal, June 2004

Classifying Supernovae Using only Galaxy data journal, November 2013

First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation journal, April 2019

Projected distances to host galaxy reduce SNIa dispersion journal, September 2018

Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey journal, September 2007

New Hubble Space Telescope Discoveries of Type Ia Supernovae at z ≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy journal, April 2007

Photometric Calibration of the First 1.5 Years of the Pan-Starrs1 Survey journal, August 2012

Snls3: Constraints on dark Energy Combining the Supernova Legacy Survey Three-Year data with Other Probes journal, August 2011

Stellar population synthesis at the resolution of 2003 journal, October 2003

CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA journal, July 2009

SYSTEMATIC UNCERTAINTIES ASSOCIATED WITH THE COSMOLOGICAL ANALYSIS OF THE FIRST PAN-STARRS1 TYPE Ia SUPERNOVA SAMPLE journal, October 2014

New Constraints on Ω M , Ω Λ , and w from an Independent Set of 11 High‐Redshift Supernovae Observed with the Hubble Space Telescope journal, November 2003

COSMOLOGICAL CONSTRAINTS FROM MEASUREMENTS OF TYPE Ia SUPERNOVAE DISCOVERED DURING THE FIRST 1.5 yr OF THE Pan-STARRS1 SURVEY journal, October 2014

The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample journal, May 2018

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters journal, February 2019

Supernova Limits on the Cosmic Equation of State journal, December 1998

Exploring the Expansion History of the Universe journal, March 2003

Measurements of Ω and Λ from 42 High‐Redshift Supernovae journal, June 1999

Correcting Type Ia Supernova Distances for Selection Biases and Contamination in Photometrically Identified Samples journal, February 2017

The Foundation Supernova Survey: motivation, design, implementation, and first data release journal, December 2017

Diversity in extinction laws of Type Ia supernovae measured between 0.2 and 2 μm journal, September 2015

The relative specific Type Ia supernovae rate from three years of ASAS-SN journal, January 2019

Dependence of Type Ia supernova luminosities on their local environment journal, July 2018

SExtractor: Software for source extraction journal, June 1996

The Progenitors of Subluminous Type I[CLC]a[/CLC] Supernovae journal, June 2001

The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant journal, December 2018

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Releases 10 and 11 Galaxy samples journal, April 2014

THE CARNEGIE SUPERNOVA PROJECT: INTRINSIC COLORS OF TYPE Ia SUPERNOVAE journal, June 2014

HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST GALAXY MASSES journal, May 2010

First-Year Sloan Digital sky Survey-Ii Supernova Results: Hubble Diagram and Cosmological Parameters journal, October 2009

zBEAMS: a unified solution for supernova cosmology with redshift uncertainties journal, October 2017

THE CARNEGIE SUPERNOVA PROJECT: ANALYSIS OF THE FIRST SAMPLE OF LOW-REDSHIFT TYPE-Ia SUPERNOVAE journal, December 2009

emcee : The MCMC Hammer journal, March 2013

[ITAL]BVRI[/ITAL] Light Curves for 22 Type I[CLC]a[/CLC] Supernovae journal, February 1999

TESTING MODELS OF INTRINSIC BRIGHTNESS VARIATIONS IN TYPE Ia SUPERNOVAE AND THEIR IMPACT ON MEASURING COSMOLOGICAL PARAMETERS journal, January 2013

Planck 2015 results : XXIII. The thermal Sunyaev-Zeldovich effect-cosmic infrared background correlation journal, September 2016

Supernova Constraints and Systematic Uncertainties from the First Three Years of the Supernova Legacy Survey journal, December 2010

An Open Catalog for Supernova Data journal, January 2017

DAOPHOT - A computer program for crowded-field stellar photometry journal, March 1987

Testing LMC Microlensing Scenarios: The Discrimination Power of the SuperMACHO Microlensing Survey journal, December 2005

Shedding light on the Type Ia supernova extinction puzzle: dust location found journal, June 2018

TYPE Ia SUPERNOVA LIGHT CURVE INFERENCE: HIERARCHICAL MODELS IN THE OPTICAL AND NEAR-INFRARED journal, April 2011

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Evidence of environmental dependencies of Type Ia supernovae from the Nearby Supernova Factory indicated by local H α journal, December 2013

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IMPROVED DARK ENERGY CONSTRAINTS FROM ∼100 NEW CfA SUPERNOVA TYPE Ia LIGHT CURVES journal, July 2009

The Difference Imaging Pipeline for the Transient Search in the dark Energy Survey journal, November 2015

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journal, January 2010

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journal, November 2018

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journal, July 1993

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journal, February 2018

First cosmology results using Type Ia supernova from the Dark Energy Survey: simulations to correct supernova distance biases
journal, February 2019

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journal, April 2018

Extending BEAMS to incorporate correlated systematic uncertainties
journal, January 2013

Measuring type ia Supernova Populations of Stretch and Color and Predicting Distance Biases
journal, May 2016

Constraining dark matter halo properties using lensed Supernova Legacy Survey supernovae
journal, March 2010

The ASAS-SN bright supernova catalogue – III. 2016
journal, August 2017

Measuring the galaxy-mass and galaxy-dust correlations through magnification and reddening: Magnification and dust reddening
journal, May 2010

The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
journal, March 2017

THE FUNDAMENTAL METALLICITY RELATION REDUCES TYPE Ia SN HUBBLE RESIDUALS MORE THAN HOST MASS ALONE
journal, February 2013

Improved Cosmological Constraints from New, Old, and Combined Supernova Data Sets
journal, October 2008

Planck 2015 results : XIII. Cosmological parameters
journal, September 2016

CONFIRMATION OF A STAR FORMATION BIAS IN TYPE Ia SUPERNOVA DISTANCES AND ITS EFFECT ON THE MEASUREMENT OF THE HUBBLE CONSTANT
journal, March 2015

Nearby supernova rates from the Lick Observatory Supernova Search - II. The observed luminosity functions and fractions of supernovae in a complete sample: Nearby supernova rates from LOSS - II
journal, March 2011

Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
journal, September 1998

Photometric Supernova Cosmology with Beams and Sdss-Ii
journal, May 2012

Rates and Properties of Type Ia Supernovae as a Function of Mass and Star Formation in Their Host Galaxies
journal, September 2006

The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am
journal, January 2018

Sampling the probability distribution of Type Ia Supernova lightcurve parameters in cosmological analysis
journal, April 2016

The Supernova Legacy Survey: measurement of $\Omega_{\mathsf{M}}$, $\Omega_\mathsf{\Lambda}$ and w from the first year data set
journal, January 2006

The clustering of the SDSS DR7 main Galaxy sample – I. A 4 per cent distance measure at z = 0.15
journal, March 2015

PHOTOMETRIC TYPE Ia SUPERNOVA CANDIDATES FROM THE THREE-YEAR SDSS-II SN SURVEY DATA
journal, August 2011

Cosmological parameters from CMB and other data: A Monte Carlo approach
journal, November 2002

New Parallaxes of Galactic Cepheids from Spatially Scanning the Hubble Space Telescope : Implications for the Hubble Constant
journal, March 2018

COLOR DISPERSION AND MILKY-WAY-LIKE REDDENING AMONG TYPE Ia SUPERNOVAE
journal, December 2013

Type Ia Supernova Discoveries at z > 1 from the Hubble Space Telescope : Evidence for Past Deceleration and Constraints on Dark Energy Evolution
journal, June 2004

Classifying Supernovae Using only Galaxy data
journal, November 2013

First Cosmology Results Using SNe Ia from the Dark Energy Survey: Analysis, Systematic Uncertainties, and Validation
journal, April 2019

Projected distances to host galaxy reduce SNIa dispersion
journal, September 2018

Observational Constraints on the Nature of Dark Energy: First Cosmological Results from the ESSENCE Supernova Survey
journal, September 2007

New Hubble Space Telescope Discoveries of Type Ia Supernovae at z ≥ 1: Narrowing Constraints on the Early Behavior of Dark Energy
journal, April 2007

Photometric Calibration of the First 1.5 Years of the Pan-Starrs1 Survey
journal, August 2012

Snls3: Constraints on dark Energy Combining the Supernova Legacy Survey Three-Year data with Other Probes
journal, August 2011

Stellar population synthesis at the resolution of 2003
journal, October 2003

CfA3: 185 TYPE Ia SUPERNOVA LIGHT CURVES FROM THE CfA
journal, July 2009

SYSTEMATIC UNCERTAINTIES ASSOCIATED WITH THE COSMOLOGICAL ANALYSIS OF THE FIRST PAN-STARRS1 TYPE Ia SUPERNOVA SAMPLE
journal, October 2014

New Constraints on Ω M , Ω Λ , and w from an Independent Set of 11 High‐Redshift Supernovae Observed with the Hubble Space Telescope
journal, November 2003

COSMOLOGICAL CONSTRAINTS FROM MEASUREMENTS OF TYPE Ia SUPERNOVAE DISCOVERED DURING THE FIRST 1.5 yr OF THE Pan-STARRS1 SURVEY
journal, October 2014

The Complete Light-curve Sample of Spectroscopically Confirmed SNe Ia from Pan-STARRS1 and Cosmological Constraints from the Combined Pantheon Sample
journal, May 2018

First Cosmology Results using Type Ia Supernovae from the Dark Energy Survey: Constraints on Cosmological Parameters
journal, February 2019

Supernova Limits on the Cosmic Equation of State
journal, December 1998

Exploring the Expansion History of the Universe
journal, March 2003

Measurements of Ω and Λ from 42 High‐Redshift Supernovae
journal, June 1999

Correcting Type Ia Supernova Distances for Selection Biases and Contamination in Photometrically Identified Samples
journal, February 2017

The Foundation Supernova Survey: motivation, design, implementation, and first data release
journal, December 2017

Diversity in extinction laws of Type Ia supernovae measured between 0.2 and 2 μm
journal, September 2015

The relative specific Type Ia supernovae rate from three years of ASAS-SN
journal, January 2019

Dependence of Type Ia supernova luminosities on their local environment
journal, July 2018

SExtractor: Software for source extraction
journal, June 1996

The Progenitors of Subluminous Type I[CLC]a[/CLC] Supernovae
journal, June 2001

The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant
journal, December 2018

The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: baryon acoustic oscillations in the Data Releases 10 and 11 Galaxy samples
journal, April 2014

THE CARNEGIE SUPERNOVA PROJECT: INTRINSIC COLORS OF TYPE Ia SUPERNOVAE
journal, June 2014

HUBBLE RESIDUALS OF NEARBY TYPE Ia SUPERNOVAE ARE CORRELATED WITH HOST GALAXY MASSES
journal, May 2010

First-Year Sloan Digital sky Survey-Ii Supernova Results: Hubble Diagram and Cosmological Parameters
journal, October 2009

zBEAMS: a unified solution for supernova cosmology with redshift uncertainties
journal, October 2017

THE CARNEGIE SUPERNOVA PROJECT: ANALYSIS OF THE FIRST SAMPLE OF LOW-REDSHIFT TYPE-Ia SUPERNOVAE
journal, December 2009

`emcee` : The MCMC Hammer
journal, March 2013

[ITAL]BVRI[/ITAL] Light Curves for 22 Type I[CLC]a[/CLC] Supernovae
journal, February 1999

TESTING MODELS OF INTRINSIC BRIGHTNESS VARIATIONS IN TYPE Ia SUPERNOVAE AND THEIR IMPACT ON MEASURING COSMOLOGICAL PARAMETERS
journal, January 2013

Planck 2015 results : XXIII. The thermal Sunyaev-Zeldovich effect-cosmic infrared background correlation
journal, September 2016

Supernova Constraints and Systematic Uncertainties from the First Three Years of the Supernova Legacy Survey
journal, December 2010

An Open Catalog for Supernova Data
journal, January 2017

DAOPHOT - A computer program for crowded-field stellar photometry
journal, March 1987

Testing LMC Microlensing Scenarios: The Discrimination Power of the SuperMACHO Microlensing Survey
journal, December 2005

Shedding light on the Type Ia supernova extinction puzzle: dust location found
journal, June 2018

TYPE Ia SUPERNOVA LIGHT CURVE INFERENCE: HIERARCHICAL MODELS IN THE OPTICAL AND NEAR-INFRARED
journal, April 2011

A MORE GENERAL MODEL FOR THE INTRINSIC SCATTER IN TYPE Ia SUPERNOVA DISTANCE MODULI
journal, September 2011

Evidence of environmental dependencies of Type Ia supernovae from the Nearby Supernova Factory indicated by local H α
journal, December 2013

The reddening law of type Ia supernovae: separating intrinsic variability from dust using equivalent widths
journal, April 2011

IMPROVED DARK ENERGY CONSTRAINTS FROM ∼100 NEW CfA SUPERNOVA TYPE Ia LIGHT CURVES
journal, July 2009

The Difference Imaging Pipeline for the Transient Search in the dark Energy Survey
journal, November 2015

Extending Supernova Spectral Templates for Next-generation Space Telescope Observations
journal, October 2018

Accelerating Universes with Scaling dark Matter
journal, April 2001

The Supernova Legacy Survey 3-year sample: Type Ia supernovae photometric distances and cosmological constraints
journal, November 2010

UBVRI Light Curves of 44 Type Ia Supernovae
journal, January 2006

The Gaia mission
journal, November 2016