Results 81 to 90 of about 1,606 (187)

The distribution and lifetime of powerful radio galaxies as a function of environment and redshift

Scientific Reports, 2018
Correlations between jet power and active time for z 
David Garofalo, Chandra B. Singh, Alexa Zack   +2 more
doaj   +1 more source

Far-Infrared Surveys of Galaxy Evolution [PDF]

Annual Review of Astronomy and Astrophysics, 2014
Roughly half of the radiation from evolving galaxies in the early Universe reaches us in the far-infrared and submillimeter wavelength ranges. Recent major advances in observing capabilities, in particular the launch of the Herschel Space Observatory in 2009, have dramatically enhanced our ability to use this information in the context of ...
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

SMILES: A Prototype JWST Multiband Mid-infrared Survey

The Astrophysical Journal
The Mid-Infrared Instrument (MIRI) for JWST is supplied with a suite of imaging band-pass filters optimized for full spectral coverage in eight intermediate-width bands from 5 to 26 μ m and a narrower one at 11.3 μ m.
G. H. Rieke, Stacey Alberts, Irene Shivaei, Jianwei Lyu, Christopher N. A. Willmer, Pablo Pérez-González, Christina C. Williams   +6 more
doaj   +1 more source

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

Characterizing the Molecular Gas in Infrared Bright Galaxies with CARMA

The Astrophysical Journal
We present the CO(1–0) maps of 28 infrared-bright galaxies from the Great Observatories All-Sky Luminous Infrared Galaxy Survey (GOALS) taken with the Combined Array for Research in Millimeter Astronomy (CARMA).
Katherine Alatalo, Andreea O. Petric, Lauranne Lanz, Kate Rowlands, Vivian U, Kirsten L. Larson, Lee Armus, Loreto Barcos-Muñoz, Aaron S. Evans, Jin Koda, Yuanze Luo, Anne M. Medling, Kristina E. Nyland, Justin A. Otter, Pallavi Patil, Fernando Peñaloza, Diane Salim, David B. Sanders, Elizaveta Sazonova, Maya Skarbinski, Yiqing Song, Ezequiel Treister, C. Meg Urry   +22 more
doaj   +1 more source

Star Clusters in the Near-ultraviolet-optical-near-infrared: Spectral Energy Distribution Modeling with Direct Markers of Gas and Dust Emission

The Astrophysical Journal
The large number of star clusters in nearby galaxies permits us to statistically test the predictions of stellar, dust, and gas models. Using Hubble Space Telescope (HST) broadband plus H α imaging combined with JWST near-infrared imaging, we use a total
Kiana F. Henny, Daniel A. Dale, Rupali Chandar, Médéric Boquien, David A. Thilker, Bradley C. Whitmore, Janice C. Lee, M. Jimena Rodriguez, Daniel Maschmann, Aida Wofford, Rémy Indebetouw, Leonardo Úbeda, Brent Groves, Hamid Hassani, Kirsten L. Larson, Thomas G. Williams, Kathryn Grasha, Francesca Pinna, Stephen Hannon   +18 more
doaj   +1 more source

Near-infrared diagnostic diagrams of the gas ionization sources in nearby galaxies: A JWST NIRSpec view

Astronomy & Astrophysics
Context. Tracing the origin of the gas emission lines in galaxies can prove challenging in certain cases. Buried active galactic nuclei (AGNs) and obscured young stellar clusters pose significant obstacles with respect to traditional optical diagnostic ...
Costa-Souza José Henrique, Colina Luis, Riffel Rogemar A., Arribas Santiago, Perna Michele, Pereira-Santaella Miguel, García-Bernete Ismael, Martín Montserrat Villar, Dors Oli L.   +8 more
doaj   +1 more source

Dwarf Galaxies with Radio-excess Active Galactic Nuclei in the Very Large Array Sky Survey

The Astrophysical Journal
We present a systematic search for radio active galactic nuclei (AGNs) in dwarf galaxies using recent observations taken by the Very Large Array Sky Survey (VLASS).
John-Michael Eberhard, Amy E. Reines, Hansung B. Gim, Jeremy Darling, Jenny E. Greene   +4 more
doaj   +1 more source

A JWST MIRI LRS Survey of 37 Massive Star-forming Galaxies and Active Galactic Nuclei at Cosmic Noon: Overview and First Results

The Astrophysical Journal
We present a large spectroscopic survey with JWST’s Mid-Infrared Instrument Low Resolution Spectrometer (LRS) targeting 37 infrared-bright galaxies between z  = 0.65–2.46 with infrared luminosities $\mathrm{log}{L}_{{\rm{IR}}}/{L}_{\odot }\gt 11.5$ and $\
Jed McKinney, Miriam Eleazer, Alexandra Pope, Anna Sajina, Stacey Alberts, Meredith Stone, Leonid Sajkov, Virginia Vanicek, Allison Kirkpatrick, Thomas S.-Y. Lai, Caitlin M. Casey, Lee Armus, Tanio Díaz- Santos, Andrew Korkus, Olivia Cooper, Lindsay R. House, Hollis Akins, Erini Lambrides, Arianna S. Long, Lin Yan   +19 more
doaj   +1 more source