The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary

Frieman, Joshua A.

doi:10.1088/0004-6256/135/1/338

Title: The Sloan Digital Sky Survey-II Supernova Survey: Technical Summary

Journal Article · Wed Aug 01 00:00:00 EDT 2007 · Astron.J.

DOI:https://doi.org/10.1088/0004-6256/135/1/338· OSTI ID:1847766

Frieman, Joshua A.

The Sloan Digital Sky Survey-II (SDSS-II) has embarked on a multi-year project to identify and measure light curves for intermediate-redshift (0.05 < z < 0.35) Type Ia supernovae (SNe Ia) using repeated five-band (ugriz) imaging over an area of 300 sq. deg. The survey region is a stripe 2.5 degrees wide centered on the celestial equator in the Southern Galactic Cap that has been imaged numerous times in earlier years, enabling construction of a deep reference image for discovery of new objects. Supernova imaging observations are being acquired between 1 September and 30 November of 2005-7. During the first two seasons, each region was imaged on average every five nights. Spectroscopic follow-up observations to determine supernova type and redshift are carried out on a large number of telescopes. In its first two three-month seasons, the survey has discovered and measured light curves for 327 spectroscopically confirmed SNe Ia, 30 probable SNe Ia, 14 confirmed SNe Ib/c, 32 confirmed SNe II, plus a large number of photometrically identified SNe Ia, 94 of which have host-galaxy spectra taken so far. This paper provides an overview of the project and briefly describes the observations completed during the first two seasons of operation.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)

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

DOE Contract Number:: AC02-07CH11359

OSTI ID:: 1847766

Report Number(s):: FERMILAB-PUB-07-476-A; SLAC-PUB-12780; arXiv:0708.2749; oai:inspirehep.net:758697

Journal Information:: Astron.J., Vol. 135

Country of Publication:: United States

Language:: English

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