Results 61 to 70 of about 5,389 (174)

Seeking for the Leading Actor on the Cosmic Stage: Galaxies versus Supermassive Black Holes

, 2012
Advances in Astronomy, Volume 2012, Issue 1, 2012.
Angela Bongiorno, Francesco Shankar, Francesca Civano, Isabelle Gavignaud, Antonis Georgakakis   +4 more
wiley   +1 more source

Starburst and AGN activity in ultraluminous infrared galaxies

, 2003
(Abridged) We examine the power source of 41 local Ultraluminous Infrared Galaxies using archival infrared and optical photometry. We fit the observed Spectral Energy Distributions (SEDs) with starburst and AGN components; each component being drawn from
Afonso, J., Clements, D., Efstathiou, A., Farrah, D., Fox, M., Rowan-Robinson, M.   +5 more
core   +1 more source

ORIGIN OF MULTIPLE NUCLEI IN ULTRALUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal, 2012
12 pages, 9 figures, accepted for publication in ...
Matsui, Hidenori, Saitoh, Takayuki R., Makino, Junichiro, Wada, Keiichi, Tomisaka, Kohji, Kokubo, Eiichiro, Daisaka, Hiroshi, Okamoto, Takashi, Yoshida, Naoki   +8 more
openaire   +2 more sources

Integral Field Spectroscopy of Mrk 273: Mapping 10^3 km/s Gas Flows and an Off-Nucleus Seyfert 2 Nebula

, 1999
Integral field optical spectroscopy with the INTEGRAL fiber-based systemis used to map the extended ionized regions and gas flows in Mrk 273, one of the closest Ultraluminous Infrared galaxies (ULIRGs).
Arribas, S., Borne, K., Colina, L.
core   +1 more source

Low Accretion Rates in Black Holes in Late-stage Merger Ultraluminous Infrared Galaxies

The Astrophysical Journal
We explore the accretion rates of supermassive black holes (SMBHs) in late-stage galaxy mergers by observing three ultraluminous infrared galaxies (ULIRGs), IRAS 14378-3651, IRAS 17208-0014 and IRAS 23365+3604, using the JWST/MIRI Medium Resolution ...
George H. Rieke, Victorine A. Buiten, Charles E. Goldberg, Jane Morrison, Paul van der Werf, Almudena Alonso-Herrero, Stacey Alberts, Nina Bonaventura, Zhiyuan Ji, Jianwei Lyu, P. Rinaldi, Meredith A. Stone, Yang Sun, Yongda Zhu   +13 more
doaj   +1 more source

Ultraluminous infrared galaxies: Starburst vs. AGN

Advances in Space Research, 1999
Abstract We have obtained ISOPHOT-S low resolution mid-infrared spectra of a sample of 60 Ultraluminous Infrared Galaxies (ULIRGs). We use the strength of the ‘PAH’ mid-infrared features as a discriminator between starburst and AGN activity, and to probe for evolutionary effects. Observed ratios of PAH features in ULIRGs differ slightly from those in
Lutz, D, Genzel, R, Sturm, E, Tran, D, Rigopoulou, D, Spoon, H, Moorwood, A   +6 more
openaire   +2 more sources

Core Revelations: The Star Formation and Active Galactic Nucleus Connection at the Heart of NGC 7469

The Astrophysical Journal
We investigate the star formation–active galactic nucleus (AGN) connection in the Seyfert 1 NGC 7469 using James Webb Space Telescope mid-infrared spectroscopic integral field unit (IFU) data.
Léa M. Feuillet, Steve Kraemer, Marcio B. Meléndez, Travis C. Fischer, Henrique R. Schmitt, James N. Reeves, Anna Trindade Falcão   +6 more
doaj   +1 more source

The Rest-frame Submillimeter Spectrum of High-redshift, Dusty, Star-forming Galaxies from the SPT-SZ Survey

The Astrophysical Journal, 2023
We present the average rest-frame spectrum of the final catalog of dusty star-forming galaxies (DSFGs) selected from the South Pole Telescope's SPT-SZ survey and measured with Band 3 of the Atacama Large Millimeter/submillimeter Array.
C. Reuter, J. S. Spilker, J. D. Vieira, D. P. Marrone, A. Weiss, M. Aravena, M. A. Archipley, S. C. Chapman, A. Gonzalez, T. R. Greve, C. C. Hayward, R. Hill, S. Jarugula, S. Kim, M. Malkan, K. A. Phadke, A. A. Stark, N. Sulzenauer, D. Vizgan   +18 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

Infrared emission from z ∼ 6.5 quasar host galaxies: a direct estimate of dust physical properties

Astronomy & Astrophysics
Quasars at the dawn of cosmic time (z > 6) are fundamental probes for investigating the early coevolution of supermassive black holes and their host galaxy.
Costa M., Decarli R., Pozzi F., Cox P., Meyer R. A., Pensabene A., Venemans B. P., Walter F., Xu F.   +8 more
doaj   +1 more source