Results 61 to 70 of about 149 (141)

Investigating the central engine of ultraluminous infrared galaxies: near infrared imaging [PDF]

Monthly Notices of the Royal Astronomical Society, 2002
We present 0.5-arcsec-resolution near-infrared images of six ultraluminous infrared galaxies with known redshifts. Six of the eight bright nuclei are resolved on kiloparsec scales, suggesting that there is significant circumnuclear star formation or close progenitor nuclei.
Davies, R., Burston, A., Ward, M.
openaire   +2 more sources

Building on the Archives: Connecting the CN/CO Intensity Ratio with Global Galaxy Properties in Nearby U/LIRGs

The Astrophysical Journal
We 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, Christine D. Wilson, Osvald Klimi, Núria Torres-Albà, Toshiki Saito   +4 more
doaj   +1 more source

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, Z.-P. Huang, Q. F. Yin, T. X. Thuan   +3 more
openaire   +1 more source

SPECTRAL ENERGY DISTRIBUTIONS OF LOCAL LUMINOUS AND ULTRALUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal Supplement Series, 2012
Luminous and ultraluminous infrared galaxies ((U)LIRGs) are the most extreme star forming galaxies in the universe. The local (U)LIRGs provide a unique opportunity to study their multi-wavelength properties in detail for comparison to their more numerous counterparts at high redshifts.
U, Vivian, Sanders, D. B., Mazzarella, J. M., Evans, A. S., Howell, J. H., Surace, J. A., Armus, L., Iwasawa, K., Kim, D.-C., Casey, C. M., Vavilkin, T., Dufault, M., Larson, K. L., Barnes, J. E., Chan, B. H. P., Frayer, D. T., Haan, S., Inami, H., Ishida, C. M., Kartaltepe, J. S., Melbourne, J. L., Petric, A. O.   +21 more
openaire   +3 more sources

Far-infrared Emission Lines as Metallicity Diagnostic

The Astrophysical Journal
The 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, Tommy Wiklind, Skarleth Motiño Flores, Rafael T. Eufrasio   +3 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., Rigopoulou, D., Farrah, D., Lebouteiller, Vianney, Li, J.   +4 more
openaire   +3 more sources

JWST Discovery of High-velocity Mid-infrared Ionized Outflows in Ultraluminous Infrared Galaxies F11119+3257 and F05189-2524

The Astrophysical Journal
Ultrafast 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, Kylie Yui Dan, Sylvain Veilleux, David S. N. Rupke, Eduardo Gonzalez-Alfonso, Ismael Garcia-Bernete, Weizhe Liu, Dieter Lutz, Marcio Melendez, Miguel Pereira-Santaella, Eckhard Sturm, Francesco Tombesi   +11 more
doaj   +1 more source

A Complete 16 μm Selected Galaxy Sample at z ∼ 1. II. Morphological Analysis

The Astrophysical Journal
We present a morphological analysis of the 16 μ m flux-density-limited galaxy sample at 0.8 < z < 1.3 from Huang et al. (2021). At the targeted redshift, the 16 μ m emission corresponds to the polycyclic aromatic hydrocarbon feature from intense star ...
Piaoran Liang, Y. Sophia Dai, Jia-Sheng Huang, Cheng Cheng, Yaru Shi   +4 more
doaj   +1 more source

JWST Discovery of a Very Fast Biconical Outflow of Warm Molecular Gas in the Nearby Ultraluminous Infrared Galaxy F08572+3915 NW

The Astrophysical Journal
We present new James Webb Space Telescope (JWST) Mid-Infrared Instrument Medium-Resolution Spectrometer observations of the nearby ultraluminous infrared galaxy (ULIRG) F08572+3915 NW. These integral field spectroscopic (IFS) data reveal a kpc-scale warm-
Kylie Yui Dan, Jerome Seebeck, Sylvain Veilleux, David Rupke, Eduardo Gonzalez-Alfonso, Ismael Garcia-Bernete, Weizhe Liu, Dieter Lutz, Marcio Melendez, Miguel Pereira Santaella, Eckhard Sturm, Francesco Tombesi   +11 more
doaj   +1 more source

Radio-only and Radio-to-far-ultraviolet Spectral Energy Distribution Modeling of 14 ULIRGs: Insights into the Global Properties of Infrared Bright Galaxies

The Astrophysical Journal
We present detailed spectral energy distribution (SED) modeling of 14 local ultraluminous infrared galaxies (ULIRGs) with outstanding photometric data from the literature covering the ultraviolet–infrared (FIR) and radio bands (∼50 MHz to ∼30 GHz).
Subhrata Dey, Arti Goyal, Katarzyna Małek, Tanio Díaz-Santos   +3 more
doaj   +1 more source