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First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline a...

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline a...

https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_proquest_journals_2131049679

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline and Light Curve Data Release

About this item

Full title

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline and Light Curve Data Release

Publisher

Ithaca: Cornell University Library, arXiv.org

Journal title

arXiv.org, 2019-06

Language

English

Formats

Publication information

Publisher

Ithaca: Cornell University Library, arXiv.org

More information

Scope and Contents

Contents

We present griz light curves of 251 Type Ia Supernovae (SNe Ia) from the first 3 years of the Dark Energy Survey Supernova Program's (DES-SN) spectroscopically classified sample. The photometric pipeline described in this paper produces the calibrated fluxes and associated uncertainties used in the cosmological parameter analysis (Brout et al. 2018-SYS, DES Collaboration et al. 2018) by employing a scene modeling approach that simultaneously forward models a variable transient flux and temporally constant host galaxy. We inject artificial point sources onto DECam images to test the accuracy of our photometric method. Upon comparison of input and measured artificial supernova fluxes, we find flux biases peak at 3 mmag. We require corrections to our photometric uncertainties as a function of host galaxy surface brightness at the transient location, similar to that seen by the DES Difference Imaging Pipeline used to discover transients. The public release of the light curves can be found at https://des.ncsa.illinois.edu/releases/sn....

Alternative Titles

Full title

First Cosmology Results Using Type Ia Supernovae From the Dark Energy Survey: Photometric Pipeline and Light Curve Data Release

Identifiers

Primary Identifiers

Record Identifier

TN_cdi_proquest_journals_2131049679

Permalink

https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_proquest_journals_2131049679

Other Identifiers

E-ISSN

2331-8422

DOI

10.48550/arxiv.1811.02378

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