Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (154) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (4)
· NED Objects (1)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Warm molecular gas in the primeval galaxy IRAS 10214 + 4724
Authors:
Solomon, P. M.; Downes, D.; Radford, S. J. E.
Affiliation:
AA(New York, State Univ., Stony Brook), AB(Inst. de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France), AC(Inst. de Radioastronomie Millimetrique, Saint-Martin-d'Heres, France)
Publication:
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 398, no. 1, p. L29-L32. (ApJL Homepage)
Publication Date:
10/1992
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
GALACTIC EVOLUTION, HIGH TEMPERATURE GASES, INFRARED SOURCES (ASTRONOMY), MOLECULAR GASES, STARBURST GALAXIES, CARBON MONOXIDE, GALACTIC MASS, LINE SPECTRA, LUMINOSITY
DOI:
10.1086/186569
Bibliographic Code:
1992ApJ...398L..29S

Abstract

We observed CO(6 yields 5) and CO(3 yields 2) emission at z = 2.286 from the extremely luminous infrared galaxy IRAS 10214 + 4724. We show that the CO(3 yields 2) line is always comparable in strength to the 1-0 line, in galaxies at high redshift, due to the warmer microwave background. The CO(6 yields 5) line traces warm molecular gas, which is found in the Milky Way only in regions of high-mass star formation. The molecular gas in 10214 + 4724 is warm and dense with n(H2) is about 5000/cu cm if T(kin) = 50 K. The total mass of molecular hydrogen is 1 x 10 exp 11/sq h solar masses. Although this is about 200 times less mass than initially estimated by Brown and VandenBout (1991), it is still 3-5 times larger than the molecular mass of any other galaxy yet observed and 60/sq h more than the H2 mass of the Milky Way. A starburst can power 10214 + 4724 only if predominantly high-mass stars are produced. This extraordinary primeval galaxy has most of its mass in molecular gas, has already collapsed, and is undergoing an extreme starburst that is generating metals in abundances close to solar.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints