CO EMISSION FROM THE Z = 2.14 DAMPED LYMAN-ALPHA SYSTEM TOWARD 0528-250

被引：14

作者：

BROWN, RL

VANDENBOUT, PA

机构：

[1] National Radio Astronomy Observatory, Charlottesville

来源：

ASTROPHYSICAL JOURNAL | 1993年 / 412卷 / 01期

关键词：

EARLY UNIVERSE; GALAXIES; FORMATION; EVOLUTION; QUASARS; ABSORPTION LINES;

D O I：

10.1086/186930

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the detection of CO(J = 3-2) and CO(J = 4-3) emission observed toward the QSO 0528-250 at a redshift corresponding to the z = 2.14 damped Lyalpha absorption system previously identified in the optical spectrum of the object. The CO emission lines extend over 1100 km s-1 and show evidence for kinematic substructure of 100-150 km s-1. The total CO luminosity exceeds 2 x 10(8) LD., and the mass of molecular gas inferred under the assumption that the density, excitation temperature, and heavy-element depletion are similar to Galactic GMCs is approximately 7 x 10(11) M..

引用

收藏

页码：L21 / L24

页数：4

相关论文

共 19 条

[11] ABSORPTION-LINES AND ION ABUNDANCES IN THE QSO-PKS0528-250 [J].

MORTON, DC ;

CHEN, JS ;

WRIGHT, AE ;

PETERSON, BA ;

JAUNCEY, DL .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1980, 193 (02) :399-413

[12] CONFIRMATION OF DUST IN DAMPED LYMAN-ALPHA SYSTEMS [J].

PEI, YCC ;

FALL, SM ;

BECHTOLD, J .

ASTROPHYSICAL JOURNAL, 1991, 378 (01) :6-16

[13] A HIGH-REDSHIFT IRAS GALAXY WITH HUGE LUMINOSITY - HIDDEN QUASAR OR PROTOGALAXY [J].

ROWANROBINSON, M ;

BROADHURST, T ;

LAWRENCE, A ;

MCMAHON, RG ;

LONSDALE, CJ ;

OLIVER, SJ ;

TAYLOR, AN ;

HACKING, PB ;

CONROW, T ;

SAUNDERS, W ;

ELLIS, RS ;

EFSTATHIOU, GP ;

CONDON, JJ .

NATURE, 1991, 351 (6329) :719-721

[14] A SURVEY OF LYMAN-LIMIT ABSORPTION IN THE SPECTRA OF 59 HIGH-REDSHIFT QSOS [J].

SARGENT, WLW ;

STEIDEL, CC ;

BOKSENBERG, A .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 69 (04) :703-761

[15]

VANDISHOECK EF, 1988, ASTROPHYS J, V334, P711

[16] DAMPED LYMAN-ALPHA ABSORPTION BY DISK GALAXIES WITH LARGE REDSHIFTS .1. THE LICK SURVEY [J].

WOLFE, AM ;

TURNSHEK, DA ;

SMITH, HE ;

COHEN, RD .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1986, 61 (02) :249-304

[17] CLUSTERING OF GALAXIES NEAR DAMPED LYMAN-ALPHA SYSTEMS WITH (Z) = 2.6 [J].

WOLFE, AM .

ASTROPHYSICAL JOURNAL, 1993, 402 (02) :411-419

[18]

WOLFE AM, 1988, QSO ABSORPTION LINES, P297

[19] PRELIMINARY SPECTRAL OBSERVATIONS OF THE GALAXY WITH A 7-DEGREES BEAM BY THE COSMIC BACKGROUND EXPLORER (COBE) [J].

WRIGHT, EL ;

MATHER, JC ;

BENNETT, CL ;

CHENG, ES ;

SHAFER, RA ;

FIXSEN, DJ ;

EPLEE, RE ;

ISAACMAN, RB ;

READ, SM ;

BOGGESS, NW ;

GULKIS, S ;

HAUSER, MG ;

JANSSEN, M ;

KELSALL, T ;

LUBIN, PM ;

MEYER, SS ;

MOSELEY, SH ;

MURDOCK, TL ;

SILVERBERG, RF ;

SMOOT, GF ;

WEISS, R ;

WILKINSON, DT .

ASTROPHYSICAL JOURNAL, 1991, 381 (01) :200-209