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Number of Authors: 37
2016 (English)In: Astrophysical Journal Supplement Series, ISSN 0067-0049, E-ISSN 1538-4365, Vol. 224, no 1, 3Article in journal (Refereed) Published
Abstract [en]

The ESSENCE survey discovered 213 Type Ia supernovae at redshifts 0.1 < z < 0.81 between 2002 and 2008. We present their R- and I-band photometry, measured from images obtained using the MOSAIC II camera at the CTIO Blanco, along with rapid-response spectroscopy for each object. We use our spectroscopic follow-up observations to determine an accurate, quantitative classification, and precise redshift. Through an extensive calibration program we have improved the precision of the CTIO Blanco natural photometric system. We use several empirical metrics to measure our internal photometric consistency and our absolute calibration of the survey. We assess the effect of various potential sources of systematic bias on our measured fluxes, and estimate the dominant term in the systematic error budget from the photometric calibration on our absolute fluxes is similar to 1%.

Place, publisher, year, edition, pages
2016. Vol. 224, no 1, 3
Keyword [en]
cosmology: observations, methods: data analysis, supernovae: general, surveys
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:su:diva-132004DOI: 10.3847/0067-0049/224/1/3ISI: 000377050200003OAI: diva2:952114
Available from: 2016-08-11 Created: 2016-07-05 Last updated: 2016-08-11Bibliographically approved

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Sollerman, Jesper
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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