SwePub
Sök i LIBRIS databas

  Extended search

WFRF:(Frieman Joshua A.)
 

Search: WFRF:(Frieman Joshua A.) > COSMOLOGY WITH PHOT...

  • Campbell, Heather (author)

COSMOLOGY WITH PHOTOMETRICALLY CLASSIFIED TYPE Ia SUPERNOVAE FROM THE SDSS-II SUPERNOVA SURVEY

  • Article/chapterEnglish2013

Publisher, publication year, extent ...

  • 2013
  • printrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:su-88257
  • https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-88257URI
  • https://doi.org/10.1088/0004-637X/763/2/88DOI

Supplementary language notes

  • Language:English
  • Summary in:English

Part of subdatabase

Classification

  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • AuthorCount:28;
  • We present the cosmological analysis of 752 photometrically classified Type Ia Supernovae (SNe Ia) obtained from the full Sloan Digital Sky Survey II (SDSS-II) Supernova (SN) Survey, supplemented with host-galaxy spectroscopy from the SDSS-III Baryon Oscillation Spectroscopic Survey. Our photometric-classification method is based on the SN classification technique of Sako et al., aided by host-galaxy redshifts (0.05 < z < 0.55). SuperNova ANAlysis simulations of our methodology estimate that we have an SN Ia classification efficiency of 70.8%, with only 3.9% contamination from core-collapse (non-Ia) SNe. We demonstrate that this level of contamination has no effect on our cosmological constraints. We quantify and correct for our selection effects (e. g., Malmquist bias) using simulations. When fitting to a flat.CDM cosmological model, we find that our photometric sample alone gives Omega(m) = 0.24(-0.05)(+0.07) (statistical errors only). If we relax the constraint on flatness, then our sample provides competitive joint statistical constraints on Omega(m) and Omega(Lambda), comparable to those derived from the spectroscopically confirmed Three-year Supernova Legacy Survey (SNLS3). Using only our data, the statistics-only result favors an accelerating universe at 99.96% confidence. Assuming a constant wCDM cosmological model, and combining with H-0, cosmic microwave background, and luminous red galaxy data, we obtain w = -0.96(-0.10)(+0.10), Omega(m) = 0.29(-0.02)(+0.02), and Omega(k) = 0.00(-0.02)(+0.03)(statistical errors only), which is competitive with similar spectroscopically confirmed SNe Ia analyses. Overall this comparison is reassuring, considering the lower redshift leverage of the SDSS-II SN sample (z < 0.55) and the lack of spectroscopic confirmation used herein. These results demonstrate the potential of photometrically classified SN Ia samples in improving cosmological constraints.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • D'Andrea, Chris B. (author)
  • Nichol, Robert C. (author)
  • Sako, Masao (author)
  • Smith, Mathew (author)
  • Lampeitl, Hubert (author)
  • Olmstead, Matthew D. (author)
  • Bassett, Bruce (author)
  • Biswas, Rahul (author)
  • Brown, Peter (author)
  • Cinabro, David (author)
  • Dawson, Kyle S. (author)
  • Dilday, Ben (author)
  • Foley, Ryan J. (author)
  • Frieman, Joshua A. (author)
  • Garnavich, Peter (author)
  • Hlozek, Renee (author)
  • Jha, Saurabh W. (author)
  • Kuhlmann, Steve (author)
  • Kunz, Martin (author)
  • Marriner, John (author)
  • Miquel, Ramon (author)
  • Richmond, Michael (author)
  • Riess, Adam (author)
  • Schneider, Donald P. (author)
  • Sollerman, JesperStockholms universitet,Institutionen för astronomi,Oskar Klein-centrum för kosmopartikelfysik (OKC)(Swepub:su)solle (author)
  • Taylor, Matt (author)
  • Zhao, Gong-Bo (author)
  • Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

Related titles

  • In:Astrophysical Journal763:2, s. 88-0004-637X1538-4357

Internet link

Find in a library

To the university's database

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view