Search: onr:"swepub:oai:research.chalmers.se:42a8b9fa-cc56-4fef-a9cf-6c67123b2d9c" >
Resolved CO(1-0) Em...
Resolved CO(1-0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2-4
-
- Stanley, F. (author)
- Institut d 'Astrophysique de Paris,Institut de Radioastronomie Millimétrique (IRAM)
-
- Jones, B. M. (author)
- Universität zu Köln,University of Cologne,University of Manchester
-
- Riechers, D. A. (author)
- Universität zu Köln,University of Cologne
-
show more...
-
- Yang, Chentao, 1988 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
-
- Berta, S. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
-
- Cox, P. (author)
- Institut d 'Astrophysique de Paris
-
- Bakx, Tom J.L.C. (author)
- Nagoya University,National Astronomical Observatory of Japan
-
- Cooray, A. (author)
- University of California at Irvine (UCI)
-
- Dannerbauer, H. (author)
- Instituto de Astrofísica de Canarias,Universidad de la Laguna,University of La Laguna
-
- Dye, S. (author)
- University Of Nottingham
-
- Hughes, D. H. (author)
- Instituto Nacional de Astrofísica, Óptica y Electrońica (INAOE),National Institute of Astrophysics, Optics and Electronics (INAOE)
-
- Ivison, R. J. (author)
- European Southern Observatory (ESO)
-
- Jin, S. (author)
- Danmarks Tekniske Universitet,Technical University of Denmark
-
- Lehnert, M. (author)
- CRAL Le Centre de Recherche Astronomique de Lyon
-
- Neri, R. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
-
- Omont, A.A. (author)
- Institut d 'Astrophysique de Paris
-
- van der Werf, Paul P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
-
- Weiss, A. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
-
show less...
-
(creator_code:org_t)
- 2023-03-02
- 2023
- English.
-
In: Astrophysical Journal. - : American Astronomical Society. - 1538-4357 .- 0004-637X. ; 945:1
- Related links:
-
https://research.cha... (primary) (free)
-
show more...
-
https://research.cha...
-
https://doi.org/10.3...
-
show less...
Abstract
Subject headings
Close
- We present the results of a survey of CO(1−0) emission in 14 infrared luminous dusty star-forming galaxies (DSFGs) at 2 < z < 4 with the NSF’s Karl G. Jansky Very Large Array. All sources are detected in 12CO(1−0), with an angular resolution of ∼1″. Seven sources show extended and complex structure. We measure CO luminosities of ( μ ) L CO ( 1 − 0 ) ′ = 0.4 - 2.9 × 10 11 K km s−1 pc2, and molecular gas masses of ( μ ) M H 2 = 1.3 - 8.6 × 10 11 M ⊙, where (μ) is the magnification factor. The derived molecular gas depletion times of t dep = 40-460 Myr, cover the expected range of both normal star-forming galaxies and starbursts. Compared to the higher −J CO transitions previously observed for the same sources, we find CO temperature brightness ratios of r 32/10 = 0.4-1.4, r 43/10 = 0.4-1.7, and r 54/10 = 0.3-1.3. We find a wide range of CO spectral line energy distributions (SLEDs), in agreement with other high-z DSFGs, with the exception of three sources that are most comparable to Cloverleaf and APM08279+5255. Based on radiative transfer modeling of the CO SLEDs we determine densities of n H 2 = 0.3 − 8.5 × 10 3 cm−3 and temperatures of T K = 100-200 K. Lastly, four sources are detected in the continuum, three have radio emission consistent with their infrared-derived star formation rates, while HerBS-70E requires an additional synchrotron radiation component from an active galactic nucleus. Overall, we find that even though the sample is similarly luminous in the infrared, by tracing the CO(1−0) emission a diversity of galaxy and excitation properties are revealed, demonstrating the importance of CO(1−0) observations in combination to higher-J transitions.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
-
Stanley, F.
-
Jones, B. M.
-
Riechers, D. A.
-
Yang, Chentao, 1 ...
-
Berta, S.
-
Cox, P.
-
show more...
-
Bakx, Tom J.L.C.
-
Cooray, A.
-
Dannerbauer, H.
-
Dye, S.
-
Hughes, D. H.
-
Ivison, R. J.
-
Jin, S.
-
Lehnert, M.
-
Neri, R.
-
Omont, A.A.
-
van der Werf, Pa ...
-
Weiss, A.
-
show less...
- About the subject
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Astronomy Astrop ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Atom and Molecul ...
-
- NATURAL SCIENCES
-
NATURAL SCIENCES
-
and Physical Science ...
-
and Other Physics To ...
- Articles in the publication
-
Astrophysical Jo ...
- By the university
-
Chalmers University of Technology