Results 31 to 40 of about 629 (178)

FAR-INFRARED FINE-STRUCTURE LINE DIAGNOSTICS OF ULTRALUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal, 2013
We present Herschel observations of six fine-structure lines in 25 Ultraluminous Infrared Galaxies at z<0.27. The lines, [O III]52, [N III]57, [O I]63, [N II]122, [O I]145, and [C II]158, are mostly single gaussians with widths <600 km s-1 and luminosities of 10^7 - 10^9 Solar.
Farrah, D., Lebouteiller, Vianney, Spoon, H., Bernard-Salas, J., Pearson, C., Rigopoulou, D., Smith, H., González-Alfonso, E., Clements, D., Efstathiou, A., Cormier, D., Afonso, J., Petty, S., Harris, K., Hurley, P., Borys, C., Verma, A., Cooray, A., Salvatelli, V.   +18 more
openaire   +5 more sources

ALMA 0.5 kpc Resolution Spatially Resolved Investigations of Nuclear Dense Molecular Gas Properties in Nearby Ultraluminous Infrared Galaxies Based on HCN and HCO+ Three Transition Line Data

The Astrophysical Journal, 2023
We present the results of our ALMA ≲0.5 kpc resolution dense molecular line (HCN and HCO ^+ J = 2–1, J = 3–2, and J = 4–3) observations of 12 nearby (ultra)luminous infrared galaxies ([U]LIRGs). After matching beam sizes of all molecular line data to the
Masatoshi Imanishi, Shunsuke Baba, Kouichiro Nakanishi, Takuma Izumi   +3 more
doaj   +1 more source

A Practical Guide to the Massive Black Hole Cosmic History

Advances in Astronomy, Volume 2012, Issue 1, 2012., 2012
I review our current understanding of massive black hole (MBH) formation and evolution along the cosmic history. After a brief introductory overview of the relevance of MBHs in the hierarchical structure formation paradigm, I discuss the main viable channels for seed BH formation at high redshift and for their subsequent mass growth and spin evolution.
A. Sesana, Francesco Shankar
wiley   +1 more source

PAH Emission from Ultraluminous Infrared Galaxies [PDF]

The Astrophysical Journal, 2007
15 pages, 9 Figures; Accepted for publication in ...
Desai, V., Armus, L., Spoon, H. W. W., Charmandaris, V., Bernard-Salas, J., Brandl, B. R., Farrah, D., Soifer, B. T., Teplitz, H. I., Ogle, P. M., Devost, D., Higdon, S. J. U., Marshall, J. A., Houck, J. R.   +13 more
openaire   +4 more sources

Star Formation History of Dwarf Galaxies in Cosmological Hydrodynamic Simulations

Advances in Astronomy, Volume 2010, Issue 1, 2010., 2010
We examine the past and current work on the star formation (SF) histories of dwarf galaxies in cosmological hydrodynamic simulations. The results obtained from different numerical methods are still somewhat mixed, but the differences are understandable if we consider the numerical and resolution effects.
Kentaro Nagamine, Andrey V. Kravtsov
wiley   +1 more source

ISO Spectroscopy of Ultraluminous Infrared Galaxies

Astrophysics and Space Science, 1999
Spectroscopy from the Infrared Space Observatory ISO has for the first timeprovided the sensitivity to exploit the diagnostic power ofmid-infrared fine structure lines and PAH features for the study ofultraluminous infrared galaxies (LIR >1012 L ⊙). We report on observations obtainedwith SWS, ISOPHOT-S, and the CVF option of ISOCAM.
Lutz, D, Genzel, R, Kunze, D, Rigopoulou, D, Spoon, H, Sturm, E, Tran, D, Moorwood, A   +7 more
openaire   +1 more source

Hard X-Ray to Radio Multiwavelength SED Analysis of Local U/LIRGs in the GOALS Sample with a Self-consistent AGN Model including a Polar-dust Component

The Astrophysical Journal Supplement Series, 2023
We conduct hard X-ray to radio multiwavelength spectral energy distribution (SED) decomposition for 57 local luminous and ultraluminous infrared galaxies observed with the Nuclear Spectroscopic Telescope Array and/or Swift/Burst Alert Telescope in the ...
Satoshi Yamada, Yoshihiro Ueda, Martín Herrera-Endoqui, Yoshiki Toba, Takamitsu Miyaji, Shoji Ogawa, Ryosuke Uematsu, Atsushi Tanimoto, Masatoshi Imanishi, Claudio Ricci   +9 more
doaj   +1 more source

J0107a: A Barred Spiral Dusty Star-forming Galaxy at z = 2.467

The Astrophysical Journal Letters, 2023
Dusty star-forming galaxies (DSFGs) are among the most massive and active star-forming galaxies during the cosmic noon. Theoretical studies have proposed various formation mechanisms of DSFGs, including major merger-driven starbursts and secular star ...
Shuo Huang, Ryohei Kawabe, Kotaro Kohno, Toshiki Saito, Shoichiro Mizukoshi, Daisuke Iono, Tomonari Michiyama, Yoichi Tamura, Christopher C. Hayward, Hideki Umehata   +9 more
doaj   +1 more source

CO Survey of High-z Radio Galaxies, Revisited with the Atacama Large Millimeter/submillimeter Array: Jet–Cloud Alignments and Synchrotron Brightening by Molecular Gas in the Circumgalactic Environment

The Astrophysical Journal, 2023
Powerful radio sources associated with supermassive black holes are among the most luminous objects in the universe, and are frequently recognized both as cosmological probes and active constituents in the evolution of galaxies.
Bjorn H. C. Emonts, Matthew D. Lehnert, Sophie Lebowitz, George K. Miley, Montserrat Villar-Martín, Ray Norris, Carlos De Breuck, Chris Carilli, Ilana Feain   +8 more
doaj   +1 more source

Nature of Widely Separated Ultraluminous Infrared Galaxies

The Astrophysical Journal, 2001
In the complete sample of ultraluminous infrared galaxies (ULIRGs) compiled by Kim (1995) about 5% consists of widely separated galaxies which are presumably in the early phase of interaction. This fact is contrary to the conventional view that ULIRGs are in the final stages of the merger of two gas-rich disk galaxies.
Dinh-V-Trung, Lo, K. Y., Kim, D. -C., Gao, Yu, Gruendl, R. A.   +4 more
openaire   +2 more sources