2005A&A...429L..25W


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET03:42:09

2005A&A...429L..25W - Astronomy and Astrophysics, volume 429, L25-28 (2005/1-2)

Atomic carbon at redshift ∼2.5.

WEISS A., DOWNES D., HENKEL C. and WALTER F.

Abstract (from CDS):

Using the IRAM 30 m telescope we detected the lower fine structure line of neutral carbon (CI (3P1-3P0), νrest=492GHz) towards three high-redshift sources: IRAS FSC10214 (z=2.3), SMM J14011+0252 (z=2.5) and H1413+117 (Cloverleaf quasar, z=2.5). SMM J14011+0252 is the first high-redshift, non-AGN source in which CI has been detected. The CI (3P1-3P0) line from FSC10214 is almost an order of magnitude weaker than previously claimed, while our detection in the Cloverleaf is in good agreement with earlier observations. The CI (3P1-3P0) linewidths are similar to the CO widths, indicating that both lines trace similar regions of molecular gas on galactic scales. Derived CI (3P1-3P0) masses for all three objects are of order fewx107M and the implied CI (3P1-3P0)/12CO(J=3-2) line luminosity ratio is about 0.2. This number is similar to values found in local galaxies. We derive a C I abundance of 5x10–5 which implies significant metal enrichment of the cold molecular gas at redshifts 2.5 (age of the universe 2.7Gyr). We conclude that the physical properties of systems at large lookback times are similar to today's starburst/AGN environments.

Abstract Copyright:

Journal keyword(s): galaxies: formation - galaxies: high-redshift - galaxies: ISM - galaxies: individual: SMM J14011+0252 - quasars: individual: Cloverleaf, IRAS F10214+4724 - cosmology: observations

Simbad objects: 5

goto Full paper

goto View the reference in ADS

Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 M 82 IG 09 55 52.430 +69 40 46.93 9.61 9.30 8.41     ~ 5426 6
2 [VV96] J102434.5+470911 Sy1 10 24 34.5 +47 09 11     20.5     ~ 475 0
3 NAME SMM J14011+0252 GiC 14 01 04.95 +02 52 24.0           ~ 152 1
4 QSO J1415+1129 QSO 14 15 46.25 +11 29 43.4   17.63 17.23     ~ 604 0
5 GAL 000.0+00.0 gam 17 45 39.60213 -29 00 22.0000           ~ 12003 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2005A&A...429L..25W and select 'bookmark this link' or equivalent in the popup menu


2021.03.03-03:42:09

© Université de Strasbourg/CNRS

    • Contact