A new measurement of the cosmic microwave background radiation temperature at z=1.97

被引：80

作者：

Ge, J

Bechtold, J

Black, JH

机构：

[1] Steward Observatory, University of Arizona, Tucson

来源：

ASTROPHYSICAL JOURNAL | 1997年 / 474卷 / 01期

关键词：

cosmic microwave background; quasars; absorption lines; individual; (QSO; 0013-004);

D O I：

10.1086/303426

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present detections of absorption from the ground state and excited states of C I in the z = 1.9731 damped Ly alpha system of the QSO 0013-004. The excitation temperature between the J = 0 and J = 1 fine-structure levels of C I is 11.6 +/- 1.0 K. We estimate other contributions to the excitation of the C I fine-structure levels, and use the population ratio of the excited state to the ground state to derive an estimate for the cosmic microwave background radiation (CMBR) temperature of T = 7.9 +/- 1.0 K at 0.61 mm and z = 1.9731, which is consistent with the predicted value of T = 8.105+/-0.030 K from the standard cosmology.

引用

页码：67 / 73

页数：7

共 24 条

[11]

LAUNAY JM, 1977, ASTRON ASTROPHYS, V56, P289

[12]

Lu LM, 1996, ASTROPHYS J, V457, pL1

[13] MEASUREMENT OF THE COSMIC MICROWAVE BACKGROUND SPECTRUM BY THE COBE FIRAS INSTRUMENT [J].

MATHER, JC ;

CHENG, ES ;

COTTINGHAM, DA ;

EPLEE, RE ;

FIXSEN, DJ ;

HEWAGAMA, T ;

ISAACMAN, RB ;

JENSEN, KA ;

MEYER, SS ;

NOERDLINGER, PD ;

READ, SM ;

ROSEN, LP ;

SHAFER, RA ;

WRIGHT, EL ;

BENNETT, CL ;

BOGGESS, NW ;

HAUSER, MG ;

KELSALL, T ;

MOSELEY, SH ;

SILVERBERG, RF ;

SMOOT, GF ;

WEISS, R ;

WILKINSON, DT .

ASTROPHYSICAL JOURNAL, 1994, 420 (02) :439-444

[14]

MATHIS JS, 1983, ASTRON ASTROPHYS, V128, P212

[15] AN UPPER LIMIT ON THE MICROWAVE BACKGROUND TEMPERATURE AT Z = 1.776 [J].

MEYER, DM ;

BLACK, JH ;

CHAFFEE, FH ;

FOLTZ, CB ;

YORK, DG .

ASTROPHYSICAL JOURNAL, 1986, 308 (02) :L37-L41

[16] ATOMIC DATA FOR RESONANCE-ABSORPTION LINES .1. WAVELENGTHS LONGWARD OF THE LYMAN LIMIT [J].

MORTON, DC .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1991, 77 (01) :119-202

[17]

PEEBLES PJE, 1993, PRINCIPLES PHYSICAL

[18] METAL ENRICHMENT, DUST, AND STAR-FORMATION IN GALAXIES AT HIGH REDSHIFTS .3. ZN AND CR ABUNDANCES FOR 17 DAMPED LYMAN-ALPHA SYSTEMS [J].

PETTINI, M ;

SMITH, LJ ;

HUNSTEAD, RW ;

KING, DL .

ASTROPHYSICAL JOURNAL, 1994, 426 (01) :79-96

[19]

ROUEFF E, 1990, ASTRON ASTROPHYS, V236, P515

[20] THE HUBBLE-SPACE-TELESCOPE QUASAR ABSORPTION-LINE KEY PROJECT .2. DATA CALIBRATION AND ABSORPTION-LINE SELECTION [J].

SCHNEIDER, DP ;

HARTIG, GF ;

JANNUZI, BT ;

KIRHAKOS, S ;

SAXE, DH ;

WEYMANN, RJ ;

BAHCALL, JN ;

BERGERON, J ;

BOKSENBERG, A ;

SARGENT, WLW ;

SAVAGE, BD ;

TURNSHEK, DA ;

WOLFE, AM .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1993, 87 (01) :45-62

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