A SUPERNOVA AT Z=0.458 AND IMPLICATIONS FOR MEASURING THE COSMOLOGICAL DECELERATION

被引：83

作者：

PERLMUTTER, S

PENNYPACKER, CR

GOLDHABER, G

GOOBAR, A

MULLER, RA

NEWBERG, HJM

DESAI, J

KIM, AG

KIM, MY

SMALL, IA

BOYLE, BJ

CRAWFORD, CS

MCMAHON, RG

BUNCLARK, PS

CARTER, D

IRWIN, MJ

TERLEVICH, RJ

ELLIS, RS

GLAZEBROOK, K

COUCH, WJ

MOULD, JR

SMALL, TA

ABRAHAM, RG

机构：

[1] UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720

[2] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[3] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[4] UNIV CAMBRIDGE,INST ASTRON,CAMBRIDGE CB3 0HA,ENGLAND

[5] ROYAL GREENWICH OBSERV,CAMBRIDGE CB3 0EZ,ENGLAND

[6] UNIV DURHAM,DURHAM DH1 3LE,ENGLAND

[7] UNIV NEW S WALES,KENSINGTON,NSW 2083,AUSTRALIA

[8] CALTECH,PASADENA,CA 91125

[9] DOMINION ASTROPHYS OBSERV,VICTORIA,BC V8X 4M6,CANADA

来源：

ASTROPHYSICAL JOURNAL | 1995年 / 440卷 / 02期

关键词：

COSMOLOGY; DISTANCE SCALE; DARK MATTER; SUPERNOVAE; GENERAL; INDIVIDUAL; SN; 1999BI;

D O I：

10.1086/187756

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have begun a program to discover high-redshift supernovae (z approximate to 0.25-0.5) and study them with follow-up photometry and spectroscopy. We report here our first discovery, a supernova at z = 0.458. The photometry for this supernova closely matches the light curve calculated for this redshift from the template of well-observed nearby Type Ia supernovae. We discuss the measurement of the deceleration parameter q(0) using such high-redshift supernovae and give the best fit value assuming this one supernova is a normal, unextincted Type Ia. We describe the main sources of error in such a measurement of q(0) and ways to reduce these errors.

引用

页码：L41 / L44

页数：4

共 22 条

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