Results 51 to 60 of about 100,003 (312)
On the cosmic evolution of the specific star formation rate [PDF]
Astronomy & Astrophysics, 2015 The apparent correlation between the specific star formation rate (sSFR) and total stellar mass (M_star) of galaxies is a fundamental relationship indicating how they formed their stellar populations. To attempt to understand this relation, we hypothesize that the relation and its evolution is regulated by the increase in the stellar and gas mass ...
Lehnert, M. +4 more
openaire +5 more sources
Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
Recovering the star formation rate in the solar neighborhood [PDF]
Astronomy & Astrophysics, 2006 This paper develops a method for obtaining the star formation histories of a mixed, resolved population through the use of color-magnitude diagrams (CMDs). The method provides insight into the local star formation rate, analyzing the observations of the Hipparcos satellite through a comparison with synthetic CMDs computed for different histories with ...
CIGNONI, MICHELE +3 more
openaire +4 more sources
Making tau amyloid models in vitro: a crucial and underestimated challenge
FEBS Letters, EarlyView.This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley +1 more source
The Determination of the Star Formation Rate in Galaxies
Astronomy & Astrophysics, 1997 A spectrophotometric model able to compute the integrated spectrum of a galaxy, including the contribution both of the stellar populations and of the ionized interstellar gas of the HII regions powered by young hot stars, has been used to study several spectral features and photometric quantities in order to derive calibrations of the star formation ...
Barbaro, G, Poggianti, BM
openaire +3 more sources
The Star Formation Rate Intensity Distribution Function: Implications for the Cosmic Star Formation Rate History of the Universe [PDF]
The Astrophysical Journal, 2002 We address the effects of cosmological surface brightness dimming on observations of faint galaxies by examining the distribution of "unobscured" star formation rate intensities versus redshift. We use the star formation rate intensity distribution function to assess the ultraviolet luminosity density versus redshift, based on our photometry and ...
Hsiao-Wen Chen +4 more
openaire +4 more sources
FEBS Letters, EarlyView.In lymphoid organs, antigen recognition and B cell receptor signaling rely on integrins and the cytoskeleton. Integrins act as mechanoreceptors, couple B cell receptor activation to cytoskeletal remodeling, and support immune synapse formation as well as antigen extraction.
Abhishek Pethe, Tanja Nicole Hartmann
wiley +1 more source
Pulling Back the Curtain on Shocks and Star Formation in NGC 1266 with Gemini-NIFS
The Astrophysical JournalWe present Gemini near-infrared integral field spectrograph K -band observations of the central 400 pc of NGC 1266, a nearby ( D ≈ 30 Mpc) post-starburst galaxy with a powerful multiphase outflow and a shocked interstellar medium.
Justin Atsushi Otter +23 more
doaj +1 more source
A Critical Accretion Rate for Triggered Star Formation [PDF]
The Astrophysical Journal, 2008 We have reexamined the similarity solution for a self-gravitating isothermal gas sphere and examined implication to star formation in a turbulent cloud. When parameters are adequately chosen, the similarity solution expresses an accreting isothermal gas sphere bounded by a spherical shock wave.
Tomoyuki Hanawa, Akihito Soeda
openaire +3 more sources
ATLASGAL - star forming efficiencies and the Galactic star formation rate
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The ATLASGAL survey has characterized the properties of approximately 1000 embedded H ii regions and found an empirical relationship between the clump mass and bolometric luminosity that covers 3–4 orders of magnitude. Comparing this relation with simulated clusters drawn from an initial mass function and using different star ...
M R A Wells +7 more
openaire +2 more sources