Results 71 to 80 of about 103,703 (233)

DUST ATTENUATION IN HIGH REDSHIFT GALAXIES: “DIAMONDS IN THE SKY” [PDF]

, 2014
We use observed optical to near-infrared spectral energy distributions (SEDs) of 266 galaxies in the COSMOS survey to derive the wavelength dependence of the dust attenuation at high redshift. All of the galaxies have spectroscopic redshifts in the range
N. Scoville, A. Faisst, P. Capak, Y. Kakazu, Gongjie Li, C. Steinhardt   +5 more
semanticscholar   +1 more source

Early Results from GLASS-JWST. XXV. Electron Density in the Interstellar Medium at 0.7 ≲ z ≲ 9.3 with NIRSpec High-resolution Spectroscopy

The Astrophysical Journal Letters
The electron density ( n _e ) of the interstellar medium (ISM) in star-forming galaxies is intimately linked to star formation and ionization condition.
Sijia Li, Xin Wang, Yuguang Chen, Tucker Jones, Tommaso Treu, Karl Glazebrook, Xianlong He, Alaina Henry, Xiao-Lei Meng, Takahiro Morishita, Guido Roberts-Borsani, Lilan Yang, Hao-Ran Yu, Antonello Calabrò, Marco Castellano, Nicha Leethochawalit, Benjamin Metha, Themiya Nanayakkara, Namrata Roy, Benedetta Vulcani   +19 more
doaj   +1 more source

The Impact of Star-formation-rate Surface Density on the Electron Density and Ionization Parameter of High-redshift Galaxies

The Astrophysical Journal, 2023
We use the large spectroscopic data set of the MOSFIRE Deep Evolution Field survey to investigate some of the key factors responsible for the elevated ionization parameters ( U ) inferred for high-redshift galaxies, focusing in particular on the role of ...
Naveen A. Reddy, Ryan L. Sanders, Alice E. Shapley, Michael W. Topping, Mariska Kriek, Alison L. Coil, Bahram Mobasher, Brian Siana, Saeed Rezaee   +8 more
doaj   +1 more source

Flexible, Photonic Films of Surfactant‐Functionalized Cellulose Nanocrystals for Pressure and Humidity Sensing

Small Structures, Volume 5, Issue 7, July 2024.
Cellulose nanocrystals are abundant, biodegradable nanoparticles that can self‐assemble into a helical stacking that exhibits structural color. By adding a single surfactant, cellulose nanocrystals can be made compatible with apolar solvents, which are widely used for industrial coatings.
Diogo V. Saraiva, Steven N. Remiëns, Ethan I. L. Jull, Ivo R. Vermaire, Lisa Tran   +4 more
wiley   +1 more source

A PHYSICAL MODEL FOR THE EVOLVING ULTRAVIOLET LUMINOSITY FUNCTION OF HIGH REDSHIFT GALAXIES AND THEIR CONTRIBUTION TO THE COSMIC REIONIZATION [PDF]

, 2014
We present a physical model for the evolution of the ultraviolet (UV) luminosity function of high-redshift galaxies, taking into account in a self-consistent way their chemical evolution and the associated evolution of dust extinction. Dust extinction is
Z. Cai, A. Lapi, A. Bressan, G. De Zotti, M. Negrello, L. Danese   +5 more
semanticscholar   +1 more source

Modeling CO emission from hydrodynamic simulations of nearby spirals, starbursting mergers, and high-redshift galaxies [PDF]

Astronomy & Astrophysics, 2014
We model the intensity of emission lines from the CO molecule, based on hydrodynamic simulations of spirals, mergers, and highredshift galaxies with very high resolutions (3 pc and 10 3 M ) and detailed models for the phase-space structure of the ...
F. Bournaud, E. Daddi, A. Weiss, F. Renaud, C. Mastropietro, R. Teyssier   +5 more
semanticscholar   +1 more source

High-redshift quasars and their host galaxies – II. Multiphase gas and stellar kinematics [PDF]

, 2022
Alessandro Lupi, Marta Volonteri, Roberto Decarli, S. Bovino, Joseph Silk   +4 more
openalex   +1 more source

Ultrasensitive and Visible Detection of Influenza A Virus Based on Enzymatic Properties of Layered Gold Nanoparticles

Small Structures, Volume 5, Issue 4, April 2024.
An ultrasensitive and visible detection for influenza A virus is presented by leveraging the properties of gold nanoparticles (GNPs). Dual amplification, achieved through a synthetic nanoprobe utilizing the enzymatic properties of layered GNPs, exhibits a higher sensitivity. This system is suitable for point‐of‐care tests within 55 min by verifying its
Eunji Jeong, Geunseon Park, Jinyoung Kim, Sojeong Lee, Chaewon Park, Jong‐Woo Lim, Minjoo Yeom, Daesub Song, Seungjoo Haam   +8 more
wiley   +1 more source

CONSTRAINTS ON PHOTOIONIZATION FEEDBACK FROM NUMBER COUNTS OF ULTRA-FAINT HIGH-REDSHIFT GALAXIES IN THE FRONTIER FIELDS [PDF]

, 2014
We exploit a sample of ultra-faint high-redshift galaxies (demagnified Hubble Space Telescope, HST, H160 magnitude > 30) in the Frontier Fields clusters A2744 and M0416 to constrain a theoretical model for the UV luminosity function in the presence of ...
B. Yue, Andrea Ferrara, E. Vanzella, R. Salvaterra   +3 more
semanticscholar   +1 more source

Chemical Evolution of the Universe and its Consequences for Gravitational‐Wave Astrophysics

Annalen der Physik, Volume 536, Issue 2, February 2024.
Population properties of double compact object mergers (especially binary black holes) are sensitive to the metallicity dependent cosmic star formation history. The uncertainty of this quantity cannot be ignored and makes the interpretation of current gravitational wave observations difficult.
Martyna Chruślińska
wiley   +1 more source