Results 71 to 80 of about 689 (170)
Compact starbursts in ultraluminous infrared galaxies
The Astrophysical Journal, 1991 The 40 ultraluminous galaxies in the IRAS Bright Galaxy Sample of sources stronger than S = 5.24 Jy at lambda = 60 microns were mapped with approximately 0.25 arcsec resolution at 8.44 GHz. Twenty-five contain diffuse radio sources obeying the FIR-radio correlation; these are almost certainly starburst galaxies.
J. J. Condon +3 more
openaire +1 more source
The Astrophysical JournalGalactic outflows driven by rapidly accreting quasars at high redshift are widely expected to play a key role in the short- and long-term future evolution of their host galaxies.
Justin S. Spilker +6 more
doaj +1 more source
Observations of Ultraluminous Infrared Galaxies with the IRS on Spitzer [PDF]
, 2006 We present spectra taken with the Infrared Spectrograph on Spitzer covering the 5−38μm region of the ten Ultraluminous Infrared Galaxies (ULIRGs) found in the IRAS Bright Galaxy Sample.
Armus, L.
core
The Astrophysical JournalWe use the CN/CO intensity ratio to obtain the dense gas fraction, f _dense , for a sample of 16 ultraluminous and luminous infrared (IR) galaxies and compare f _dense with a suite of global galaxy properties.
Blake Ledger +4 more
doaj +1 more source
Far-infrared metallicity diagnostics: application to local ultraluminous infrared galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2017 AbstractThe abundance of metals in galaxies is a key parameter that permits to distinguish between different galaxy formation and evolution models. Most of the metallicity determinations are based on optical line ratios. However, the optical spectral range is subject to dust extinction and, for high-z objects (z > 3), some of the lines used in ...
Pereira-Santaella, M. +4 more
openaire +3 more sources
Far-infrared Emission Lines as Metallicity Diagnostic
The Astrophysical JournalThe chemical abundance of the interstellar medium is a key tracer of galaxy evolution. Optical and ultraviolet emission lines are widely used to derive gas-phase metallicities, but suffer from uncertainties due to possible temperature fluctuations and ...
Elizabeth Fletcher +3 more
doaj +1 more source
Dynamics of Molecular Gas in the Central Region of the Quasar I Zwicky 1
The Astrophysical Journal, 2023 We present a study of the molecular gas distribution and kinematics in the cicumnuclear region (radii ≲2 kpc) of the z ≈ 0.061 quasar I Zwicky 1 using a collection of available Atacama Large Millimeter/submillimeter Array observations of the carbon ...
Qinyue Fei +6 more
doaj +1 more source
Fe K emission in the ultraluminous infrared galaxy Arp 220 [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 7 pages, accepted for publication in ...
Iwasawa, K. +5 more
openaire +2 more sources
The Astrophysical JournalUltrafast outflows (UFOs) are thought to be a driving mechanism of large-scale winds driven by active galactic nuclei (AGN), which cause significant galactic feedback through quenching star formation and regulating supermassive black hole growth.
Jerome Seebeck +11 more
doaj +1 more source
Ultraluminous infrared galaxies
, 1987 The IRAS survey of the local universe has revealed the existence of a class of ultraluminous infrared galaxies with L(8 to 1000 micrometer) greater than 10 to the 12th L sub 0 that are slightly more numerous, and as luminous as optically selected quasars
Persson, S. E. +9 more
core +1 more source