THE STANDARDIZED CANDLE METHOD FOR TYPE II PLATEAU SUPERNOVAE

被引:125
作者
Olivares E, Felipe [1 ,2 ]
Hamuy, Mario [1 ]
Pignata, Giuliano [1 ,3 ]
Maza, Jose [1 ]
Bersten, Melina [1 ]
Phillips, Mark M. [4 ]
Suntzeff, Nicholas B. [5 ]
Filippenko, Alexei V. [6 ]
Morrel, Nidia I. [4 ]
Kirshner, Robert P. [7 ]
Matheson, Thomas [8 ]
机构
[1] Univ Chile, Dept Astron, Santiago, Chile
[2] Max Planck Inst Extraterr Phys, D-85740 Garching, Germany
[3] Univ Andres Bello, Dept Ciencias Fis, Santiago, Chile
[4] Carnegie Observ, Las Campanas Observ, La Serena, Chile
[5] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA
[6] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA
[7] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA
[8] Natl Opt Astron Observ, Tucson, AZ 85719 USA
基金
美国国家科学基金会;
关键词
distance scale; galaxies: distances and redshifts; supernovae: general; QUANTITATIVE SPECTROSCOPIC ANALYSIS; PROBE WMAP OBSERVATIONS; DARK ENERGY; IA SUPERNOVAE; HUBBLE DIAGRAM; P SUPERNOVAE; LIGHT CURVES; SN; 2005CS; GALAXY DISTANCES; DECLINE RATE;
D O I
10.1088/0004-637X/715/2/833
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In this paper, we study the "standardized candle method" using a sample of 37 nearby (redshift z < 0.06) Type II plateau supernovae having BVRI photometry and optical spectroscopy. An analytic procedure is implemented to fit light curves, color curves, and velocity curves. We find that the V-I color toward the end of the plateau can be used to estimate the host-galaxy reddening with a precision of sigma(A(V)) = 0.2 mag. The correlation between plateau luminosity and expansion velocity previously reported in the literature is recovered. Using this relation and assuming a standard reddening law (R-V = 3.1), we obtain Hubble diagrams (HDs) in the BVI bands with dispersions of similar to 0.4 mag. Allowing R-V to vary and minimizing the spread in the HDs, we obtain a dispersion range of 0.25-0.30 mag, which implies that these objects can deliver relative distances with precisions of 12%-14%. The resulting best-fit value of R-V is 1.4 +/- 0.1.
引用
收藏
页码:833 / 853
页数:21
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