Type Ia supernovae, the Hubble Constant, the cosmological constant, and the age of the Universe

被引：0

作者：

Tonry, JL ^{[1
]}

机构：

[1] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA

来源：

ASTROPHYSICAL AGES AND TIME SCALES | 2001年 / 245卷

关键词：

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The age of the Universe depends on both the present-day Hubble Constant and the history of cosmic expansion. For decelerating cosmologies such as Omega(m) = 1, the dimensionless product H(0)t < 1 and modestly high values of the Hubble constant H-0 > 70 km s(-1) Mpc(-1) would be inconsistent with a cosmic age to larger than 12 Gyr. However, if Omega(Lambda) > 0, then H(0)t(0) can take on a range of values. Evidence from the Hubble diagram for high redshift Type Ia supernovae favors Omega(Lambda) similar to 0.7 and H(0)t(0) similar to 1. Then, if Ho lies in the range 65-73 km s(-1) Mpc(-1), the age of the Universe, to, is 14 +/- 1.6 Gyr.

引用

页码：593 / 602

页数：10

共 27 条

[1] Cosmological constant or intergalactic dust? Constraints from the cosmic far-infrared background [J].

Aguirre, A ;

Haimi, Z .

ASTROPHYSICAL JOURNAL, 2000, 532 (01) :28-36

[2] Intergalactic dust and observations of type Ia supernovae [J].

Aguirre, A .

ASTROPHYSICAL JOURNAL, 1999, 525 (02) :583-593

[3]

AJHAR EA, 2001, IN PRESS APJ

[4] THE CASE FOR A HUBBLE CONSTANT OF 30 KM S(-1) MPC(-1) [J].

BARTLETT, JG ;

BLANCHARD, A ;

SILK, J ;

TURNER, MS .

SCIENCE, 1995, 267 (5200) :980-983

[5]

Blakeslee JP, 1999, ASTROPHYS SPACE SC L, V237, P181

[6] Optical spectra of Type Ia supernovae at z=0.46 and z=1.2 [J].

Coil, AL ;

Matheson, T ;

Filippenko, AV ;

Leonard, DC ;

Tonry, J ;

Riess, AG ;

Challis, P ;

Clocchiatti, A ;

Garnavich, PM ;

Hogan, CJ ;

Jha, S ;

Kirshner, RP ;

Leibundgut, B ;

Phillips, MM ;

Schmidt, BP ;

Schommer, RA ;

Smith, RC ;

Soderberg, AM ;

Spyromilio, J ;

Stubbs, C ;

Suntzeff, NB ;

Woudt, P .

ASTROPHYSICAL JOURNAL, 2000, 544 (02) :L111-L114

[7] The Hubble Space Telescope Key Project on the Extragalactic Distance Scale.: XXVI.: The calibration of population II secondary distance indicators and the value of the hubble constant [J].

Ferrarese, L ;

Mould, JR ;

Kennicutt, RC ;

Huchra, J ;

Ford, HC ;

Freedman, WL ;

Stetson, PB ;

Madore, BF ;

Sakai, S ;

Gibson, BK ;

Graham, JA ;

Hughes, SM ;

Illingworth, GD ;

Kelson, DD ;

Macri, L ;

Sebo, K ;

Silbermann, NA .

ASTROPHYSICAL JOURNAL, 2000, 529 (02) :745-767

[8] Results from the High-z Supernova Search Team [J].

Filippenko, AV ;

Riess, AG .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1998, 307 (1-4) :31-44

[9]

FREEDMAN WL, 2001, IN PRESS APJ

[10]

GIBSON BK, 2001, APJ, V547, P103

← 1 2 3 →