Forecasting cosmological constraints from age of high-z galaxies

被引：6

作者：

Bengaly, C. A. P., Jr. ^{[1
]}

Dantas, M. A. ^{[2
]}

Carvalho, J. C. ^{[1
,3
]}

Alcaniz, J. S. ^{[1
]}

机构：

[1] Observ Nacl, Dept Astron, BR-20921400 Rio De Janeiro, RJ, Brazil

[2] Univ Estado Rio Grande do Norte, Dept Fis, BR-59625620 Mossoro, RN, Brazil

[3] Univ Fed Rio Grande do Norte, Dept Fis, BR-59072970 Natal, RN, Brazil

来源：

ASTRONOMY & ASTROPHYSICS | 2014年 / 561卷

关键词：

cosmology: theory; cosmology: observations; cosmological parameters; dark energy; PROBE WMAP OBSERVATIONS; HUBBLE-SPACE-TELESCOPE; OSCILLATIONS; CONSTANT;

D O I：

10.1051/0004-6361/201322475

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We perform Monte Carlo simulations based on current age estimates of high-z objects to forecast constraints on the equation of state (EoS) of the dark energy. In our analysis, we use two different EoS parameterizations, namely, the so-called Chevallier-Polarski-Linder (CPL) and its uncorrelated form, and calculate the improvements on the figure of merit (FoM) for both cases. Although there is a clear dependence of the FoM with the size and accuracy of the synthetic age samples, we find that the most substantial gain in FoM comes from a joint analysis involving age and baryon acoustic oscillation data.

引用

页数：4

共 29 条

[1] New limits on ΩΛ and ΩM from old galaxies at high redshift [J].

Alcaniz, JS ;

Lima, JAS .

ASTROPHYSICAL JOURNAL, 1999, 521 (02) :L87-L90

[2] The 6dF Galaxy Survey: baryon acoustic oscillations and the local Hubble constant [J].

Beutler, Florian ;

Blake, Chris ;

Colless, Matthew ;

Jones, D. Heath ;

Staveley-Smith, Lister ;

Campbell, Lachlan ;

Parker, Quentin ;

Saunders, Will ;

Watson, Fred .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 416 (04) :3017-3032

[3] Probing dark energy using baryonic oscillations in the galaxy power spectrum as a cosmological ruler [J].

Blake, C ;

Glazebrook, K .

ASTROPHYSICAL JOURNAL, 2003, 594 (02) :665-673

[4] The WiggleZ Dark Energy Survey: mapping the distance-redshift relation with baryon acoustic oscillations [J].

Blake, Chris ;

Kazin, Eyal A. ;

Beutler, Florian ;

Davis, Tamara M. ;

Parkinson, David ;

Brough, Sarah ;

Colless, Matthew ;

Contreras, Carlos ;

Couch, Warrick ;

Croom, Scott ;

Croton, Darren ;

Drinkwater, Michael J. ;

Forster, Karl ;

Gilbank, David ;

Gladders, Mike ;

Glazebrook, Karl ;

Jelliffe, Ben ;

Jurek, Russell J. ;

Li, I-hui ;

Madore, Barry ;

Martin, D. Christopher ;

Pimbblet, Kevin ;

Poole, Gregory B. ;

Pracy, Michael ;

Sharp, Rob ;

Wisnioski, Emily ;

Woods, David ;

Wyder, Ted K. ;

Yee, H. K. C. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2011, 418 (03) :1707-1724

[5] CONFLICT OVER THE AGE OF THE UNIVERSE [J].

BOLTE, M ;

HOGAN, CJ .

NATURE, 1995, 376 (6539) :399-402

[6] Accelerating universes with scaling dark matter [J].

Chevallier, M ;

Polarski, D .

INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 2001, 10 (02) :213-223

[7] Luminous red galaxies in simulations: cosmic chronometers? [J].

Crawford, S. M. ;

Ratsimbazafy, A. L. ;

Cress, C. M. ;

Olivier, E. A. ;

Blyth, S. -L. ;

van der Heyden, K. J. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2010, 406 (04) :2569-2577

[8] Age constraints on the cosmic equation of state [J].

Dantas, M. A. ;

Alcaniz, J. S. ;

Jain, D. ;

Dev, A. .

ASTRONOMY & ASTROPHYSICS, 2007, 467 (02) :421-426

[9] Time and distance constraints on accelerating cosmological models [J].

Dantas, M. A. ;

Alcaniz, J. S. ;

Mania, D. ;

Ratra, Bharat .

PHYSICS LETTERS B, 2011, 699 (04) :239-245

[10] A 3.5-Gyr-old galaxy at redshift 1.55 [J].

Dunlop, J ;

Peacock, J ;

Spinrad, H ;

Dey, A ;

Jimenez, R ;

Stern, D ;

Windhorst, R .

NATURE, 1996, 381 (6583) :581-584

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