Results 41 to 50 of about 5,290 (158)
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 +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
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 +7 more
openaire +2 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
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 +9 more
doaj +1 more source
Evidence for a Molecular Cloud Origin for Gamma-Ray Bursts: Implications for the Nature of Star Formation in the Universe [PDF]
, 2001 It appears that the majority of rapidly-, well-localized gamma-ray bursts with undetected, or dark, optical afterglows, or `dark bursts' for short, occur in clouds of size R > 10L_{49}^{1/2} pc and mass M > 3x10^5L_{49} M_{sun}, where L is the isotropic ...
Dal Fiume D. +7 more
core +2 more sources
High‐Resolution Mid‐Infrared Spectroscopy of Ultraluminous Infrared Galaxies [PDF]
The Astrophysical Journal, 2007 62 pages in preprint format, 4 tables, 23 figures.
James R. Houck +11 more
openaire +4 more sources
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 +9 more
doaj +1 more source
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 +8 more
doaj +1 more source
The Nature of Ultraluminous Infrared Galaxies [PDF]
Symposium - International Astronomical Union, 2001 The Infrared Space Observatory (ISO) has for the first time made possible mid- and far-infrared spectroscopic studies of nearby and moderate redshift, dusty ultraluminous infrared galaxies (ULIRGs). We discuss recent SWS, LWS, ISOPHOT-S and ISOCAM (CVF) results on ULIRGs, addressing the following topics: What powers ULIRGs?
openaire +2 more sources