First-year sloan digital sky survey-II supernova results: Consistency and constraints with other intermediate-redshift data sets

Lampeitl, H., Nichol, R. C., Seo, H. J., Giannantonio, T., Shapiro, C., Bassett, B., Percival, W. J., Davis, T. M., Dilday, B., Frieman, J., Garnavich, P., Sako, M., Smith, M., Sollerman, J., Becker, A. C., Cinabro, D., Filippenko, A. V., Foley, R. J., Hogan, C. J., Holtzman, J. A., Jha, S. W., Konishi, K, Marriner, J., Richmond, M. W., Riess, A. G., Schneider, D. P., Stritzinger, M., van der Heyden, K. J., VanderPlas, J. T., Wheeler, J. C. and Zheng, C. (2010) First-year sloan digital sky survey-II supernova results: Consistency and constraints with other intermediate-redshift data sets. Monthly Notices of the Royal Astronomical Society, 401 4: 2331-2342. doi:10.1111/j.1365-2966.2009.15851.x

Author Lampeitl, H.
Nichol, R. C.
Seo, H. J.
Giannantonio, T.
Shapiro, C.
Bassett, B.
Percival, W. J.
Davis, T. M.
Dilday, B.
Frieman, J.
Garnavich, P.
Sako, M.
Smith, M.
Sollerman, J.
Becker, A. C.
Cinabro, D.
Filippenko, A. V.
Foley, R. J.
Hogan, C. J.
Holtzman, J. A.
Jha, S. W.
Konishi, K
Marriner, J.
Richmond, M. W.
Riess, A. G.
Schneider, D. P.
Stritzinger, M.
van der Heyden, K. J.
VanderPlas, J. T.
Wheeler, J. C.
Zheng, C.
Title First-year sloan digital sky survey-II supernova results: Consistency and constraints with other intermediate-redshift data sets
Journal name Monthly Notices of the Royal Astronomical Society   Check publisher's open access policy
ISSN 0035-8711
Publication date 2010-02-10
Year available 2009
Sub-type Article (original research)
DOI 10.1111/j.1365-2966.2009.15851.x
Open Access Status DOI
Volume 401
Issue 4
Start page 2331
End page 2342
Total pages 12
Editor R. F. Carswell
Place of publication Oxford, United Kingdom
Publisher Oxford University Press
Collection year 2011
Language eng
Formatted abstract
We present an analysis of the luminosity distances of Type Ia Supernovae (SNe) from the Sloan Digital Sky Survey-II (SDSS-II) SN Survey in conjunction with other intermediate-redshift (z < 0.4) cosmological measurements including redshift-space distortions from the Two-Degree Field Galaxy Redshift Survey (2dFGRS), the integrated Sachs-Wolfe (ISW) effect seen by the SDSS and the latest baryon acoustic oscillation (BAO) distance scale from both the SDSS and 2dFGRS. We have analysed the SDSS-II SN data alone using a variety of 'model-independent' methods and find evidence for an accelerating Universe at a >97 per cent level from this single data set. We find good agreement between the SN and BAO distance measurements, both consistent with a Λ-dominated cold dark matter cosmology, as demonstrated through an analysis of the distance duality relationship between the luminosity (dL) and angular diameter (dA) distance measures. We then use these data to estimate w within this restricted redshift range (z < 0.4). Our most stringent result comes from the combination of all our intermediate-redshift data (SDSS-II SNe, BAO, ISW and redshift-space distortions), giving w = -0.81+0.16-0.18 (stat) ± 0.15 (sys) and ΩM = 0.22 +0.09-0.08 assuming a flat universe. This value of w and associated errors only change slightly if curvature is allowed to vary, consistent with constraints from the cosmic microwave background. We also consider more limited combinations of the geometrical (SN, BAO) and dynamical (ISW, redshift-space distortions) probes.
© 2009 RAS.
Keyword Supernovae: general
Cosmology: observations
Distance scale
Cosmological parameters
Large-scale structure of Universe
Luminous Red Galaxies
Anisotropy--Probe Observations
Integrated Sachs-Wolfe
IA Light Curves
Spectroscopic Target Selection
Large-scale Structure
Survey Imaging Data
Dark energy
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 27 NOV 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
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Created: Sun, 07 Feb 2010, 00:01:46 EST