Results 101 to 110 of about 833,501 (156)

Hα Velocity Mapping of Ultraluminous Infrared Galaxies

The Astrophysical Journal, 1998
We use imaging Fabry-Pec rot observations to explore the dynamical conditions in four southern ultra- luminous infrared galaxies. These galaxies all show morphological and kinematic fea- (L IR Z 1012 L _ ) tures indicative of a major merger, but they span a wide range of inferred dynamical ages: the youngest system is just past the -rst encounter ...
J. Christopher Mihos, Gregory D. Bothun
openaire   +1 more source

Possibility of Using 3.3 μm Polycyclic Aromatic Hydrocarbon Luminosity as a Molecular Gas Mass Estimator

The Astrophysical Journal
We present CO(1–0) observations of 50 star-forming galaxies at 0.01 < z < 0.35, for which 3.3 μ m polycyclic aromatic hydrocarbon (PAH) emission flux or its upper limit is available.
Hyunjin Shim, Junhyun Baek, Dohyeong Kim, Minjin Kim, Hyunmi Song, Gu Lim, Jaejun Cho, Hayeong Jeong, Yejin Jeong, Ye-eun Kang, Dongseob Lee, Junyeong Park, Eunsuk Seo, Junho Song, Been Yeo   +14 more
doaj   +1 more source

Over half of the far-infrared background light comes from galaxies at z ≥ 1.2 [PDF]

, 2009
Submillimetre surveys during the past decade have discovered a population of luminous, high-redshift, dusty starburst galaxies¹⁻⁸. In the redshift range 1 ≤ z ≤ 4, these massive submillimetre galaxies go through a phase characterized by optically ...
David Hughes, ITZIAR ARETXAGA MENDEZ
core  

Measuring the star formation rate density from CNOC2 [PDF]

, 2006
This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core  

Ionized Carbon in Galaxies: The [C ii] 158 μm Line as a Total Molecular Gas Mass Tracer Revisited

The Astrophysical Journal
In this paper, we present a statistical study of the [C ii ] 158 μ m line and the CO(1−0) emission for a sample of ∼200 local and high- z (32 sources with z > 1) galaxies with very different physical conditions.
Yinghe Zhao, Jiamin Liu, Zhi-Yu Zhang, Thomas G. Bisbas   +3 more
doaj   +1 more source

Ultraluminous Infrared Galaxies and the Origin of QSOs

, 2001
LaTex, 11 pages with 7 embedded postscript figures, Review presented at the Workshop on "QSO Hosts and Their Environments", Granada, Spain, 10-12 January ...
openaire   +2 more sources

Atomic hydrogen and OH emission in luminous infrared galaxies

, 2022
Luminous infrared galaxies have enhanced efficiencies of molecular cloud formation, and star formation, relative to normal galaxies with comparable total amounts of interstellar gas.
Mirabel, I.F.
core  

Hidden quasars in ultraluminous infared galaxies [PDF]

, 1998
. Many ultraluminous infrared galaxies (ULIRGS) are pow- ered by quasars hidden in the center, but many are also powered by starbursts. A simply diagnostic diagram is proposed that can iden- tify obscured quasars in ULIRGs by their high-ionization ...
Stanford, S. A., Tran, H., Brotherton, M. S., van Breugel, W.   +3 more
core  

Implication of Galaxy-scale Negative Feedback by One of the Most Powerful Multiphase Outflows in a Hyperluminous Infrared Galaxy at Intermediate Redshift

The Astrophysical Journal
Powerful galactic outflows driven by active galactic nuclei (AGNs) are commonly considered as one of the main mechanisms to regulate star formation in massive galaxies.
Xiaoyang Chen, Masayuki Akiyama, Kohei Ichikawa, Yoshiki Toba, Toshihiro Kawaguchi, Takuma Izumi, Toshiki Saito, Daisuke Iono, Masatoshi Imanishi, Kianhong Lee, Hiroshi Nagai, Hirofumi Noda, Abdurro’uf, Mitsuru Kokubo, Naoki Matsumoto   +14 more
doaj   +1 more source

The SUPERCOLD-CGM Survey. II. [C i](1–0) Emission and the Physical Conditions of Cold Gas in Enormous Lyα Nebulae at z ∼ 2

The Astrophysical Journal
We report Atacama Large Millimeter/submillimeter Array and Atacama Compact Array observations of atomic carbon ([C i ](1–0)) and dust continuum in 10 enormous Ly α nebulae hosting ultraluminous Type-I QSOs at z = 2.2–2.5, as part of the Survey of ...
Jianan Li, Bjorn H. C. Emonts, Zheng Cai, Jianrui Li, Ran Wang, Montserrat Villar-Martín, Fabrizio Arrigoni Battaia, Mingyu Li, Yunjing Wu, Ilsang Yoon, Matthew D. Lehnert, Kyle Massingill, Craig Sarazin, Jason X Prochaska, Mark Lacy, Brian Mason   +15 more
doaj   +1 more source