scholarly journals Understanding Cosmological Measurements with a large number of mock galaxy catalogues.

2014 ◽  
Vol 10 (S306) ◽  
pp. 266-268
Author(s):  
M. Manera ◽  
W. J. Percival ◽  
Ashley Ross ◽  
R. Tojeiro ◽  
L. Samushia ◽  
...  
Keyword(s):  
Error Analysis ◽  
Distance Scale ◽  
Galaxy Surveys ◽  
Best Estimate ◽  
Cosmic Distance Scale

AbstractMock galaxy catalogues are essential to the error analysis of cosmological measurements from big galaxy surveys covering thousands of square degrees in the sky, like BOSS, WiggleZ, DES, or Euclid. The PTHalos mock galaxy catalogues were used in the BOSS survey to analyse the BAO measurement from the CMASS (z∼ 0.57) and LOWZ (z∼ 0.32) galaxy samples, which provided the best estimate to date of the cosmic distance scale from galaxy surveys at these redshifts. We review the PTHalos mocks galaxy catalogues and their key contributions to these analyses.

The Cosmic Distance Scale

Nature ◽  
1958 ◽  
Vol 182 (4643) ◽  
pp. 1132-1133
Keyword(s):  
Distance Scale ◽  
Cosmic Distance Scale

scholarly journals Planetary Nebulae and the Cosmic Distance Scale

1995 ◽  
Vol 10 ◽  
pp. 501-503
Author(s):  
George H. Jacoby
Keyword(s):  
Excellent Agreement ◽  
Stellar Evolution ◽  
Planetary Nebula ◽  
Planetary Nebulae ◽  
Distance Scale ◽  
Final Mass ◽  
Luminosity Functions ◽  
Systematic Effects ◽  
Cosmic Distance Scale

AbstractPlanetary nebula luminosity functions provide very accurate distances to galaxies as judged by comparisons with other techniques, including Cepheids; systematic effects cannot be significant. The method is empirical and is a consequence of the shallow initial-final mass relationship predicted by stellar evolution and directly measured. From distances to ∼ 30 galaxies, the PNLF yields H0 = 79, in excellent agreement with recent Cepheid discoveries in Virgo.

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